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Rothman-Simeone The Spine E-Book

Rothman-Simeone The Spine E-Book

Steven R. Garfin | Frank J. Eismont | Gordon R. Bell | Christopher M Bono | Jeffrey Fischgrund

(2017)

Additional Information

Book Details

Abstract

Get comprehensive, practical coverage of both surgical and non-surgical treatment approaches from the world’s most trusted authorities in spine surgery and care. Rothman-Simeone and Herkowitz’s The Spine, 7th Edition, edited by Drs. Steven R. Garfin, Frank J. Eismont, Gordon R. Bell, Jeffrey S. Fischgrund, and Christopher M. Bono, presents state-of-the-art techniques helping you apply today’s newest developments in your practice.

  • Highlights critical information through the use of pearls, pitfalls, and key points throughout the text, as well as more than 2,300 full-color photographs and illustrations.
  • Offers a newly revised, streamlined format that makes it easier than ever to find the information you need.
  • Contains new chapters on the clinical relevance of finite element modeling and SI joint surgery.
  • Includes an expanded section on minimally invasive spine surgery, including recent developments and future directions.
  • Provides the latest evidence-based research from high-quality studies, including new randomized controlled trials for lumbar stenosis, surgery, fusion, and injections.
  • Presents the knowledge and expertise of new international contributors, as well as new editorial leadership from Dr. Steven Garfin.

Table of Contents

Section Title Page Action Price
Front Cover cover
Inside Front Cover ifc1
Rothman and Simeone The Spine, 2-Volume Set i
Copyright Page iv
Dedication v
Contributors vi
Preface xx
Acknowledgment xxii
Table Of Contents xxiii
I Basic Science 1
1 Development of the Spine 3
Early Embryologic Spine Precursors: Day 17 to Week 4 3
From Somites to Spinal Column 5
Precartilaginous (Mesenchymal) Stage: Weeks 4 and 5 5
Cartilaginous Stage: Weeks 6 and 7 6
Ossification Stage: Week 8 and Beyond 6
Fate of the Notochord 7
From Neural Tube to Spinal Cord 8
Development of the Costal Elements 9
Development of the Intervertebral Disc 9
Spinal Ligament Development 10
Influence of Fetal Movement 10
Development of Specialized Vertebral Regions 10
Occipitocervical Complex 10
Atlantoaxial Complex 10
Sacrum 12
Genetic Control of Spinal Segmentation 12
Links Between Fly and Human 13
Congenital Syndromes: Genetic Evidence of Segmentation in Humans 13
Klippel-Feil Syndrome 13
Caudal Dysplasias 13
Acknowledgment 14
Key References 14
References 14
2 Applied Anatomy of the Spine 17
Vertebrae 17
Pars Interarticularis 17
Regional Characteristics 18
Cervical Vertebrae 19
Atlantoaxial Complex 21
Thoracic Vertebrae 21
Lumbar Vertebrae 22
Sacral Vertebrae 22
Coccyx 23
Arthrology of the Spine 23
Articulations of the Vertebral Arches 24
Special Articulations 25
Articulations of the Vertebral Bodies 26
Intervertebral Disc 26
Nucleus Pulposus 26
Anulus Fibrosus 27
Regional Variations of the Disc 28
Spinal Ligaments 28
Anterior Longitudinal Ligament 28
Posterior Longitudinal Ligament 28
Relationships of the Roots of the Spinal Nerves 29
Intervertebral Foramen 30
Lumbosacral Nerve Root Variations 31
Innervation of the Spine 31
Spinal Motion Segment 35
Nutrition of the Intervertebral Disc 35
Blood Supply of the Vertebral Column 36
Regional Variations in Spinal Vasculature 38
Cervical Region 38
Atlantoaxial Complex 38
Sacroiliolumbar Arterial System 40
Fourth Lumbar Arteries 40
Iliolumbar Artery 41
Sacral Arteries 41
Lateral Sacral Arteries 41
Middle Sacral Artery 41
Functional Significance 42
Venous System of the Vertebral Column 42
Blood Supply of the Spinal Cord 44
Anterior Spinal Artery 45
Lateral Spinal Arteries of the Cervical Cord 47
Intrinsic Vascularity of the Spinal Cord 47
Intrinsic Venous Drainage of the Spinal Cord 48
Vascularization of the Spinal Nerve Roots 48
Functional Anatomy of the Spine 50
Specific Regional Considerations 51
Biomechanics of the Intervertebral Disc 52
Acknowledgments 52
Key References 52
References 53
3 Skeletal Muscle 57
Cross-Bridge Cycle 57
Muscle Fiber Types 57
Fiber Type Distribution of Paraspinal Muscles 58
Muscle Injury 58
Muscle Architecture 59
Basic Architectural Definitions 59
Experimental Determination of Skeletal Muscle Architecture 60
Mechanical Properties of Muscles With Different Architectures 61
Comparison of Two Otherwise Identical Muscles With Different PCSAs 61
Comparison of Two Otherwise Identical Muscles With Different Fiber Lengths 61
Interplay of Muscle Architecture and Moment Arm 61
Summary 62
Key References 62
References 63
4 Spinal Musculature 65
Anatomy and Architecture of Spinal Musculature 65
Intrinsic Spinal Muscles in the Lumbar, Thoracic, or Cervical Spine 65
Intrinsic Spinal Muscles Specific to the Cervical Spine 68
Splenius Capitis and Cervicis 68
Semispinalis Capitis and Cervicis 68
Longus Capitis and Colli 69
Suboccipital Muscles 70
Extrinsic Muscles Linking Vertebrae to the Pelvis 70
Extrinsic Muscles Linking Vertebrae or Skull to the Shoulder Girdle or Rib Cage 70
Implications of Spinal Muscle Anatomy and Architecture for Motor Control 71
Fascicle Length Changes With Posture 71
Moment Arm Changes With Posture 72
Implications of Spinal Muscle Anatomy and Architecture for Injury and Pain 73
Muscle Injury Resulting From Eccentric Contraction 73
Muscles Altering Load Distribution in Other Anatomic Structures 73
Muscle Effects on Spinal Stiffness and Stability 73
Summary 75
Key References 75
References 75
5 The Intervertebral Disc 79
Normal Disc 79
Disc Anatomy 79
Cartilaginous Endplates 79
Nucleus Pulposus 79
Anulus Fibrosus 80
Blood Supply, Nutrition, and Innervation 80
Blood Supply 80
Nutrition 80
Innervation 81
Disc Composition 81
Water 82
Macromolecules 82
Intervertebral Disc Degeneration 82
Degeneration 82
Matrix Macromolecule Changes 83
Cellular Changes 83
Structural Changes 83
Neovascularization and Sensory Nerve Innervation 84
Etiology of Intervertebral Disc Degeneration 84
Aging 85
Genetic Predisposition 85
Nutrition 85
Environmental Factors 86
Facet Joints, Ligaments, and Vertebral Bodies 86
Facet Joints 86
Ligaments 86
Vertebral Bodies 86
References 87
6 Biomechanics of the Spinal Motion Segment 91
Assessing the Biomechanics of the Spinal Motion Segment 91
Physical Charcteristics of the Spine Structures 91
Support Structures 92
Disc 94
Spinal Ligaments 94
Coordinate System and Force/Movement Definitions 95
Tissue Load Characteristics 96
Mechanical Degeneration: Tissues at Risk 97
In Vitro Spine Biomechanics 98
Motion Characteristics (Kinematics) of the Spinal Motion Segments 98
Axis of Rotation 98
Motion Coupling 100
Neutral Zone Limits 102
Load Tolerance of the Spinal Motion Segments 103
Muscle and Tendon Strain 103
Ligament and Bone Tolerance 103
Contact Force Tolerance 103
Tolerance of Specific Spine Structures 103
Compression 103
Shear 105
Torsion 106
Flexion and Extension 106
Lateral Motion 107
In Vivo Spine Biomechanics 107
Overview 107
Quantitative Assessment of in Vivo Spinal Motion 108
Overall Spine Kinematics (Extrinsic Measurements) 108
Spine Kinematics (Intrinsic Measurements) 108
Quantitative Assessment of in Vivo Spinal Loading 110
In Silico Modeling in the Spine 110
The System 112
Summary 114
Key References 114
References 114
7 Nerve Root Pain in Disc Herniation and Spinal Stenosis 119
Mechanical Effects on Nerve Roots 119
Chronic Experimental Nerve Root Compression 120
Spinal Stenosis: Experimental-Clinical Correlation 120
Mechanical Nerve Root Deformation and Pain 121
Neuropathologic Changes and Pain 121
Biologic and Biochemical Effects on Nerve Roots 121
Biologic Effects of Nucleus Pulposus 122
Nucleus Pulposus and Sciatic Pain 122
Other Consequences of Herniated Nucleus Pulposus 123
Chemical Components of Nucleus Pulposus 124
Cytokines as Mediators of Nerve Dysfunction and Pain 124
Clinical Use of Cytokine Inhibitors for Treatment of Sciatica 126
Summary 126
Key References 127
References 127
8 Basic Concepts in Genetics and Intervertebral Disc Degeneration and Scoliosis 133
Introduction to Genetics 133
Chromosomes and DNA 133
Genetic Variations 134
Mutations and Polymorphisms 134
Terminology and Types of Disease 134
Gene Mapping 134
Linkage Analysis 135
Association Studies 135
Newer Technologies 136
Interpretation of Results 137
Disc Degeneration Genetics 137
Scoliosis Genetics 139
Early-Onset Scoliosis and Congenital Scoliosis 139
Adolescent Idiopathic Scoliosis 140
Conclusions and the Future 141
Key References 142
References 142
9 Twin Studies 145
Twin Studies 145
Critical Importance of Phenotype 147
Genetic Versus Environmental Influences on Lumbar Degenerative and Pathoanatomic Findings 147
Disc Degeneration 147
Modic Changes 150
Schmorl’s Nodes and Endplate Defects 150
Lumbar Spinal Stenosis 150
Genetic Versus Environmental Influences on Back Pain 151
Specific Environmental and Behavioral Influences on Disc Degeneration and Back Pain 152
Exposure-Discordant Twin Studies of Disc Degeneration 152
Cohort and Matched Case-Control Studies of Back Pain 152
Summary 152
Key References 153
References 153
10 Outcomes Research for Spinal Disorders 155
Need for Outcomes Research 155
Measuring Outcomes in Spinal Disorders 156
Importance of Study Design in Outcomes Research 158
Understanding Threats to Study Validity 159
Chance 159
Bias 159
Confounding 160
Randomized Controlled Trials 161
Observational Cohort Studies 161
Case-Control Studies 162
Case Series 163
Levels of Evidence 163
Cost-Effectiveness Analysis 163
Future of Outcomes Research: Patient-Specific Recommendations 164
Key Points 164
Key References 164
References 165
11 Finite Element Analysis 167
Introduction 167
Finite Element Modeling of the Spine 168
Low Back Pain 168
Modeling of the Lumbar Spine 169
Vertebral Body and Posterior Bone 170
Intervertebral Disc 170
Apophyseal (Facet) Joint 171
Ligaments 171
Validation of the Lumbar Model 171
Finite Element Model of the Cervical Spine 173
Conversion of CT and MRI Scans to 3D Solid Model 173
Meshing 173
Finite Element Analysis (Using Abaqus Version 6.11) 173
Vertebral Body and Posterior Bone 173
Facet Joints 173
Intervertebral Disc and Luschka’s Joints 174
Ligaments 174
Application of the Finite Element Model of the Spine 175
Clinical Application of the Finite Element Models of the Spine 176
Conclusion 178
Key References 179
References 179
II Diagnosis 181
12 Patient History and Physical Examination 183
Differential Diagnosis 183
Biomedical Factors and the Medical History 185
Red Flags: What Not to Miss 185
Historical Features of the Presenting Complaint 187
Axial Versus Radicular Pain 187
Patient Demographics 188
Past Medical History 189
Family History 190
Yellow Flags: Predictors of Poor Outcome in the Patient’s History 190
Obtaining a Psychosocial History 191
Additional Assessment Tools 191
Physical Examination 192
Observation 193
Palpation 193
Neurologic Examination 194
Special Tests and Provocative Maneuvers 195
Nonorganic Signs 196
Additional Orthopaedic Assessment 196
Risk Stratification 196
Summary 197
Key Points 197
Key References 197
References 197
13 Spine Imaging 201
Modalities 201
Radiographs 201
Myelography 201
Computed Tomography 202
Magnetic Resonance Imaging 202
Routine Magnetic Resonance Imaging 203
Dynamic Magnetic Resonance Imaging 203
Magnetic Resonance Myelography 203
Magnetic Resonance Neurography 204
Diffusion-Weighted Imaging 205
Cerebrospinal Fluid Flow Imaging 205
Magnetic Resonance Spectroscopy 205
Magnetic Resonance Imaging Safety and Patient Issues 205
Spinal Angiography 206
Discography 206
Nuclear Medicine Examinations 208
Imaging Artifacts 208
Pathology 208
Degenerative Disc Disease 208
Intervertebral Disc 210
Degenerative Endplate Changes 210
Lumbar Stenosis 211
Facet Disease 212
Instability 212
Cervical Radiculopathy and Myelopathy 213
Postoperative Imaging 213
Epidural Fibrosis and Disc Herniations 215
Stenosis 216
Arachnoiditis 216
Infection 218
Intramedullary Lesions 220
Neoplasms 220
Inflammation 222
Intradural Extramedullary Lesions 224
Extradural Lesions 226
Bone Marrow Imaging 226
Ossification of Posterior Longitudinal Ligament 226
Spinal Cysts 227
Trauma 227
Hemorrhage 232
Key Points 232
Key References 233
References 233
14 Electrodiagnostic Examination 241
Pathophysiology 241
General Concepts of Electrodiagnostic Examination 242
Nerve Conduction Studies 242
Motor Nerve Conduction Studies 242
Sensory Nerve Conduction Studies 243
Late Responses (H Responses and F Waves) 244
Needle Electrode Examination 244
Insertional Phase 244
At-Rest Phase 245
Activation Phase 245
Recruitment 245
Morphology 245
Electrodiagnostic Findings in Radiculopathy 246
Nerve Conduction Studies 246
Routine Studies 246
Late Responses 247
Needle Electrode Examination 247
Determining Duration of Radiculopathy: Acute Versus Chronic 251
Determining Severity of Radiculopathy 251
Electrodiagnostic Findings at Specific Root Levels 252
Cervical Radiculopathy 252
Differential Diagnoses 252
Thoracic Radiculopathy 252
III Surgical Anatomy and Approaches 315
18 Cervical Spine 317
Surgical Anatomy 317
Surface Anatomy and Skin 317
Osseous Anatomy and Bony Articulation 317
Ligaments 319
Intervertebral Discs 320
Neural Elements 321
Vascular Structures 322
Musculature 323
Fascial Layers 323
Triangles of the Neck 324
Surgical Approaches 324
Anterior Approaches to Upper Cervical Spine 324
Transoral Technique 325
Complications 325
Anteromedial Retropharyngeal Technique 326
Anterolateral Retropharyngeal Technique 327
Complications 329
Anterior Exposure of Lower Cervical Spine 329
Anteromedial Approach 330
Anterolateral Approach 330
Complications 330
Anterior Approach to Cervicothoracic Junction 331
Modified Anterior Approach 331
Sternal-Splitting Approach 332
Transthoracic Approach 333
Complications 333
Posterior Approaches 333
Posterior Approach to Upper Cervical Spine 333
Posterior Approach to Lower Cervical Spine 334
Posterior Approach to Cervicothoracic Junction 335
Complications 336
Pearls 336
Pitfalls 336
Key Points 336
Key References 336
References 336
19 Anatomy of the Anterior Cervicothoracic Spine 339
Surgical Approaches to the Anterior Thoracic Spine 339
Low Anterior Cervical and High Transsternal Approach 339
Transpleural Transthoracic Third Rib Resection 341
Thoracotomy (Anterior) Approach to the Thoracic Spine 343
Endoscopic Anterior Approach to the Thoracic Spine 344
Anterior Anatomy of the Thoracolumbar Junction 345
Anterior Approach to the Thoracolumbar Spine 345
Posterior Anatomy of the Thoracic Spine 348
Posterior Approaches to the Thoracic Spine 349
Posterior Approach for Decompressive Laminectomy and Fusion 349
Transpedicular Approach 351
Costotransversectomy 351
Lateral Extracavitary Approach 352
Minimally Invasive Approaches to the Thoracic and Thoracolumbar Spine 353
Key Points 353
Low Anterior Cervical and High Transsternal Approach 353
Transpleural Transthoracic Third Rib Approach 354
Thoracotomy (Anterior) Approach to the Thoracic Spine 354
Endoscopic Anterior Approach to the Thoracic Spine 354
Anterior Approach to the Thoracolumbar Spine 354
Posterior Approach for Decompressive Laminectomy and Fusion 354
Transpedicular Approach 354
Costotransversectomy 354
Lateral Extracavitary Approach 354
Minimally Invasive Approaches 354
Key References 354
References 355
20 Lateral and Posterior Approaches to the Lumbosacral Spine 357
Selection of Approach to the Lumbar Spine 357
Minimally Invasive Lateral Approach to the Spine 357
Technique 357
Complications 360
Posterior Approach to the Lumbar Spine 361
Technique 362
Posterolateral Approach to the Lumbar Vertebral Bodies 364
Technique 364
Pearls 365
Pitfalls 365
Key Points 365
Key References 366
References 366
21 Lateral Lumbar Interbody Fusion 367
History 367
Indications 367
Advantages 367
Contraindications 367
Technique 368
Anatomic Considerations 372
Lumbar Plexus 372
Vascular Anatomy 374
High Iliac Crest/Lumbosacral Junction 375
Scoliosis 375
Thoracolumbar Junction 375
Thoracic Spine 376
Complications 376
Outcomes 376
Summary 378
Key References 378
References 378
22 Anatomy, Nonoperative Results, Preoperative Injections, and Prescriptions 383
Anatomic Considerations in Spinal Pain 383
Zygapophyseal Joint (Facet Joint) 383
Sacroiliac Joint 384
Intervertebral Disc 384
Ligaments of the Spine 384
Nerve Root 384
Cervical Spine Injections 384
Procedure: Cervical Interlaminar Epidural Steroid Injection 385
Procedure: Cervical Transforaminal Epidural Steroid Injection 386
Procedure: Cervical Medial Branch Blocks and Radiofrequency Ablation 387
Lumbar Spine Injections 388
Procedure: Lumbar Interlaminar Epidural Steroid Injection 388
Procedure: Caudal Epidural Steroid Injection 388
Procedure: Lumbar Transforaminal Epidural Steroid Injection 390
Procedure: Lumbar Zygapophyseal Joint Injections (Facet Joint) 391
Procedure: Lumbar Medial Branch Blocks and Radiofrequency Ablation 391
Procedure: Sacroiliac Joint Injection 393
Summary 393
References 394
23 Sacroiliac Joint Pain 397
Introduction 397
Background 397
Anatomy 397
Pathology 398
Diagnosis 399
Clinical History 399
Physical Examination 400
Role of Imaging 400
Diagnostic Injection 400
Summary 400
References 402
24 Outcomes of Nonsurgical and Surgical Treatment of Chronic Sacroiliac Joint Pain 405
Nonsurgical Treatment 405
Medication Management 405
Physical Therapy 405
Pelvic Bracing 405
Sacroiliac Joint Injection 405
Radiofrequency Ablation 405
Surgical Treatment 406
Open Surgery 406
Minimally Invasive Surgery 407
Outcomes From Minimally Invasive Sacroiliac Joint Fusion 407
Complications From Minimally Invasive Surgical Sacroiliac Joint Fusion 409
Minimally Invasive Surgical Fusion Technique 409
Summary 410
References 411
IV Pediatrics 415
25 Back Pain in Children and Adolescents 417
Introduction 417
History 417
Physical Examination 418
Diagnostic Studies 418
Radiographs 418
Bone Scan 419
Computed Tomography 419
Magnetic Resonance Imaging 419
Laboratory Tests 419
Differential Diagnosis 419
Muscle Strain 419
Disc Herniation 419
Apophyseal Ring Fracture/Slipped Vertebral Apophysis 420
Vertebral Fractures 420
Developmental Disorders 421
Spondylolysis and Spondylolisthesis 421
Scheuermann Kyphosis 422
Lumbar Scheuermann Disease 423
Idiopathic Scoliosis 423
Syringomyelia 423
Tethered Spinal Cord 424
Idiopathic Juvenile Osteoporosis 424
Infectious and Inflammatory Etiologies 424
Discitis 424
Vertebral Osteomyelitis 425
Ankylosing Spondylitis and Rheumatologic Conditions 425
Hematologic Conditions 426
Sickle Cell Anemia 426
Neoplasms 426
Aneurysmal Bone Cysts 426
Osteoid Osteoma 426
Osteoblastoma 427
Eosinophilic Granuloma/Langerhans Cell Histiocytosis 427
Malignant Tumors 428
Leukemia 428
Vertebral Malignant Tumors 429
Spinal Metastasis 429
Spinal Cord Tumors 429
Nonorthopaedic Causes of Pain 429
Psychosomatic Pain (Conversion Reaction) 429
Key Points 429
Use of Diagnostic Tests 429
Likely Diagnoses Based on Age 429
References 429
26 Congenital Scoliosis 435
Embryology 435
Normal Development 435
Associated Anomalies 435
Genetic Etiology 436
Environmental Etiology 437
Classification 437
Failures of Formation 437
Failures of Segmentation 437
Mixed Deformity 438
Natural History 438
Location 439
Progression of Curvature by Deformity Type and Location 439
Effects on Thoracic Contents 440
Assessment of Patient 440
Physical Examination 440
Associated Anomalies 440
Imaging 441
Radiographs 441
Computed Tomography 441
Magnetic Resonance Imaging 442
Treatment 442
Nonoperative 442
Operative 442
Posterior Spine Fusion 443
Combined Anterior and Posterior Spine Fusion 443
Convex Hemiepiphysiodesis 443
Hemivertebra Excision 444
Osteotomies 445
Vertebral Column Resection 445
Guided Growth Procedures 445
Conclusion 446
Key Points 446
Key References 446
References 447
27 Idiopathic Scoliosis 451
Epidemiology 451
Etiology 451
Genetics 451
Natural History 452
Evaluation 452
History and Physical Examination 452
Radiographic Evaluation 453
Classification Systems 453
Three-Dimensional Classification 453
Treatment Options 454
Observation 454
Bracing and Casting 455
Operative Intervention 455
Surgical Techniques 455
Upper and Lower Instrumented Vertebra Selection 458
Selective Fusions 459
Adjuncts to Correction 461
Direct Vertebral Rotation 461
Osteotomies 462
Minimally Invasive Techniques 462
Postoperative Care 462
Complications 462
Summary 464
Pearls and Pitfalls 464
Key Points 465
Key References 465
References 465
28 Neuromuscular Scoliosis 469
General Principles 469
Classification 469
Natural History and Associated Complications 469
Treatment Principles 469
Nonoperative Treatment 470
Medical Treatment 470
Spinal Muscular Atrophy 470
Cerebral Palsy 471
Duchenne Muscular Dystrophy 471
Genetic and Family Counseling 472
Bracing 472
Operative Treatment 473
Preoperative Considerations 475
Neurologic 475
Pulmonary 476
Gastrointestinal 476
Cardiovascular 476
Hematologic 476
Radiographic Assessment 477
History of Instrumentation in Neuromuscular Scoliosis 477
Pelvic and Sacral Fixation 479
Anterior Spinal Release and Fusion 482
Indications 482
Instrumentation 483
Intraoperative Considerations 483
Patient Positioning 483
Spinal Cord Monitoring 484
Blood Conservation 484
Bone Graft 484
Timing of Combined Procedures 484
Anterior Surgical Approaches 485
Transthoracic Approach 485
Thoracoscopic Approach 485
Thoracoabdominal Approach 485
Retroperitoneal Lumbar Approach 485
Vertical Expandable Prosthetic Titanium Rib 485
Postoperative Care 486
Intensive Care Unit 486
Bracing 486
Complications 486
Wound Infections 486
Respiratory Complications 487
Urinary Tract Infections 487
Cerebral Palsy 487
Scoliosis in Cerebral Palsy 487
Treatment Options 488
Bracing 488
Surgical Management 488
Authors’ Recommendations 489
Myelodysplasia 489
Scoliosis in Myelodysplasia 489
Treatment Options 491
Bracing 491
Surgical Management 492
Anterior Fusion 492
Posterior Fusion 492
Fusion to the Pelvis 493
Kyphosis Treatment 494
Spinal Muscular Atrophy 495
Spinal Muscular Atrophy Types 495
Scoliosis in Spinal Muscular Atrophy 495
Treatment Options 496
Bracing 496
Surgical Management 497
Our Recommendations 498
Duchenne Muscular Dystrophy 498
Scoliosis in Duchenne Muscular Dystrophy 498
Treatment Options 499
Surgical Management 500
Our Recommendations 500
Rett Syndrome 500
Scoliosis in Rett Syndrome 500
Pearls 501
Pitfalls 501
Key References 501
References 502
29 Thoracoscopic Approach for Spinal Conditions 509
Thoracoscopic Anterior Release and Fusion 509
Indications 509
Scoliosis 509
Kyphosis 511
Congenital Deformity 511
Contraindications 511
Surgical Technique 512
Outcomes 514
Thoracoscopic Anterior Scoliosis Instrumentation 515
Indications 515
Contraindications 515
Surgical Technique 515
Outcomes 517
Treatment of Other Thoracic Spine Conditions 518
Tumor 518
Trauma 518
Thoracic Disc Herniation 519
Infection 519
Future of Thoracoscopic Spinal Surgery 519
Pearls 520
Pitfalls 520
Key Points 520
References 520
30 Pediatric Kyphosis 525
Scheuermann Disease 525
Etiology 527
Clinical Evaluation 527
Imaging Studies 527
Natural History 528
Nonsurgical Treatment 528
Indications for Surgery 529
Surgical Treatment 529
Surgical Principles 532
Degree of Deformity Correction 532
Selection of Fusion Levels 533
Spinopelvic Alignment 533
Complications 535
Junctional Kyphosis 536
Congenital Deformity 537
Classification 538
Imaging Studies 539
Clinical Evaluation 539
Natural History 539
Nonoperative Treatment 539
Surgical Treatment 540
Complications 543
Pseudarthrosis and Progressive Deformity 543
Neurologic Complications 543
Pearls 543
Key Points 543
Key References 544
References 544
31 Spondylolysis and Spondylolisthesis 549
Pathophysiology 549
Epidemiology 550
History and Physical Examination 551
Radiographic Evaluation 552
Nonoperative Management 553
Surgical Treatment 554
Summary 558
Acknowledgment 558
Pearls 558
Pitfall 558
Key Points 559
Key References 559
References 559
32 Cervical, Thoracic, and Lumbar Spinal Trauma of the Immature Spine 565
Epidemiology 565
Developmental Anatomy and Biomechanics 565
Transport and Evaluation 566
Plain Radiography of the Cervical Spine 567
Computed Tomography and Magnetic Resonance Imaging of the Spine 569
Spine Clearance 570
Spinal Cord Injury in Children 572
Spinal Cord Injury Without Radiographic Abnormality (SCIWORA) 573
Atlanto-Occipital Dislocation 573
Fractures of the Atlas 574
Atlantoaxial Instability 574
Atlantoaxial Rotatory Subluxation 575
Odontoid Fractures 576
Os Odontoideum 576
Hangman’s Fracture 576
Lower Cervical (Subaxial) Spine Injuries 577
Compression Fractures 577
Facet Fractures and Dislocations 577
Burst Fractures 578
Vertebral Growth Plate Fractures 578
Pediatric Halo 578
Thoracolumbar Classification Systems 578
Compression Fractures 579
Burst Fractures 579
Chance Fractures 579
Fracture-Dislocations 579
Limbus Fractures 580
Key Points 581
Key References 581
References 581
33 The Immature Spine and Athletic Injuries 589
Principles of Diagnosis 589
History 589
Genetics 590
Physical Examination 590
Imaging 591
Magnetic Resonance Imaging of the Spine 591
Bone Scintigraphy (Bone Scan) 591
Single-Photon Emission Computed Tomography 591
Principles of Treatment and Rehabilitation 592
Acute Treatment 592
Bracing 592
Traction 592
Rehabilitation 592
Core Stabilization 592
Flexibility 592
Muscle Performance (Strength Versus Endurance) 592
Sport-Specific Exercise 592
Deep Water Running and Swimming 592
Cycling 593
Program Guidelines 593
Education 593
Return to Play 593
Disorders and Treatment 594
Low Back Pain in Adolescent Athletes 594
Spondylolysis 594
Clinical Presentation 595
Diagnostic Imaging 595
Treatment 595
Return to Activity 596
Spondylolisthesis 596
Lumbar Scheuermann Disease (Juvenile Disc Disease) 597
Herniated Nucleus Pulposus 598
Apophyseal Ring Fracture 599
Cervical Spine Injuries 600
On-Field Examination 600
Field Treatment of Cervical Fractures 600
Prevention of Catastrophic Injuries to the Cervical Spine in Football 600
Return to Play Guidelines 600
Cervical Peripheral Nerve Injuries 600
Burners 600
Cervical Stenosis 601
Transient Spinal Cord Compression 601
Fracture 601
Fracture of the Thoracolumbar Spine 601
Sacral Stress Fracture 602
Iliac Apophysitis 602
Tumor 603
Pearls 603
Pitfalls 603
Key Points 604
Key References 604
References 604
34 Congenital Anomalies of the Cervical Spine 609
Introduction 609
Modern Cervical Instrumentation in Children 609
Occipital Plating 609
C1 Screws 609
C2 Screws 610
C1–C2 Transarticular Screws 610
Subaxial Lateral Mass Screws 611
Halo 611
Navigation 612
Specific Cervical Spine Conditions 612
Basilar Invagination 612
Clinical Features 612
Imaging 612
Treatment 613
Occipitoatlantal Instability 614
Occipitoatlantal Fusion (Occipitalization, Occipitocervical Synostosis) 614
Clinical Features 614
Imaging 616
Treatment 616
Anomalies of Ring of C1 616
Atlantoaxial Instability 617
Clinical Presentation 618
Imaging 618
Treatment 619
Anomalies of Odontoid (Dens) 620
Clinical Features 622
Radiographic Features 622
Treatment 623
Klippel-Feil Syndrome 625
Clinical Features 626
Associated Conditions 627
Scoliosis 627
Renal, Cardiac, Auditory Abnormalities 627
Mirror Motions (Synkinesis) 628
Imaging 628
Patterns of Cervical Motion 629
Treatment 630
Congenital Muscular Torticollis 631
Clinical Presentation 632
Differential Diagnosis 632
Imaging 633
Nonoperative Treatment 634
Surgery 634
Acknowledgment 635
References 635
35 Congenital Anomalies of the Spinal Cord 641
Introduction 641
Embryology 641
Spina Bifida Aperta 642
Myelomeningocele 642
Embryology 642
Epidemiology 642
Prenatal Diagnosis 642
Initial Management 643
Postnatal Surgery for MMC Closure 644
In Utero Closure 645
Ventriculoperitoneal Shunts 646
Endoscopic Third Ventriculostomy 646
Surgical Complications 647
Latex Allergy 647
Late Deterioration 647
Shunt Malfunction/Increased Intracranial Pressure 647
Tethered Cord 648
Chiari Malformations 648
Hydromyelia 649
Spina Bifida Occulta 649
Embryology 649
Epidemiology 649
Clinical Presentation 650
Investigation 650
Specific Spina Bifida Occulta 652
Lipomyelomeningocele 652
Filum Terminale Syndrome 652
Sacral Agenesis and Caudal Regression 652
Congenital Dermal Sinus 653
Split Cord Anomalies 653
Neurenteric Cyst 654
Conclusion 656
References 656
V Cervical Degenerative Disorders 661
36 Cervical Spinal Disorders Associated With Skeletal Dysplasias and Metabolic Diseases 663
Skeletal Dysplasias and Metabolic Diseases 663
Patient Evaluation 663
Imaging 663
Treatment 665
Complications 667
Skeletal Dysplasias 667
Achondroplasia 667
Pseudoachondroplasia 667
Spondyloepiphyseal Dysplasia 668
Kniest Dysplasia 668
Metaphyseal Chondrodysplasia 668
Metatropic Dysplasia 668
Chondrodysplasia Punctata 669
Diastrophic Dysplasia 669
Camptomelic Dysplasia 670
Larsen Syndrome 670
22q11.2 Deletion Syndrome 670
Mucopolysaccharidoses 670
Hurler Syndrome: Mucopolysaccharidosis Type 1 670
Hunter Syndrome: Mucopolysaccharidosis Type 2 670
Morquio Syndrome: Mucopolysaccharidosis Type 4 671
Summary 671
Key References 673
References 673
37 Pathophysiology, Natural History, and Clinical Syndromes of Cervical Disc Disease 677
Axial Neck Pain 677
Pathophysiology 677
Epidemiology and Natural History 678
Clinical Syndromes of Axial Neck Pain 679
Cervical Radiculopathy 679
Pathophysiology 679
Epidemiology and Natural History 680
Clinical Syndromes of Cervical Radiculopathy 680
Cervical Myelopathy 683
Pathophysiology 683
Natural History 683
Clinical Syndromes of Cervical Myelopathy 685
Summary 686
References 686
38 Medical Myelopathies 689
Spinal Cord Anatomy 689
Longitudinal Orientation 689
Transverse Orientation 689
Ascending Lateral Spinothalamic Tracts 689
Ascending Dorsal Column–Medial Lemniscus Tracts 689
Descending Lateral Corticospinal (Pyramidal) Tracts 689
Vascular Diseases of the Spinal Cord 690
Infarctions of the Spinal Cord 690
Arterial Spinal Cord Infarctions 690
Evaluation of Suspected Stroke of the Spinal Cord 690
Imaging 690
Spinal Cord Vascular Lesions 690
Cavernous Hemangioma (Cavernomas) 691
Hemangioblastomas 691
Arteriovenous Malformations and Arteriovenous Fistulas 691
Inflammatory Spinal Cord Disorders 691
Transverse Myelitis 691
Multiple Sclerosis 692
Neuromyelitis Optica 694
Myelopathy Due to Connective Tissue Conditions and Diseases 694
Rheumatoid Arthritis 694
Systemic Lupus Erythematosus and Antiphospholipid Antibody Syndrome 694
Sjögren Disease 695
Behçet Disease 695
Neurosarcoidosis 695
Infectious Myelopathies 695
Viral Myelitis 695
Human Immunodeficiency Virus Infection 695
Human T-Cell Lymphotropic Virus Type 1 696
Herpesviruses 696
Myelopathies Resulting From Bacterial Diseases 696
Syphilis 696
Tabes Dorsalis and Syphilitic Meningomyelitis 696
Tuberculosis 697
Spinal Epidural Abscesses 697
Nutritional Myelopathies 698
Vitamin B12 Deficiency 698
Copper Deficiency 699
References 700
39 Nonoperative Management of Disc and Degenerative Disorders 705
Introduction 705
General Treatment Approach 705
Mechanical Treatment Modalities 706
Immobilization 706
Temperature Therapy 706
Passive Modalities 706
Traction 706
Pharmacotherapy 707
Nonsteroidal Antiinflammatory Drugs 707
Oral Corticosteroids 707
Opioids 707
Neuropathic Pain 708
Muscle Relaxants 708
Exercise and Physical Therapy 708
Manipulation 709
Injections 709
Epidural Injections 709
Selective Nerve Root Blocks 709
Complications and Efficacy 709
Diagnostic Injections 710
Biotechnology and Future Treatment Strategies 710
Medications 710
Direct Injection 710
Gene Therapy 710
Cell-Based Therapies 711
Summary 711
Key References 711
References 711
40 Surgical Management of Axial Neck Pain 715
Etiology and Pathophysiology of Axial Neck Pain 715
Natural History and Prognosis Factors for Neck Pain 716
Clinical Evaluation of the Patient With Neck Pain 717
Imaging Studies 717
Radiographs 717
Advanced Imaging Studies 718
Cervical Discography 719
Surgery for Axial Neck Pain 720
Axial Neck Pain Secondary to Pseudarthrosis From Prior Surgery 721
Outcome After Surgery for Axial Neck Pain 722
Summary 723
Key References 724
References 724
41 Cervical Radiculopathy 727
Introduction 727
Pathophysiology 727
Radiographic Evaluation 728
Surgical Indications 730
Surgical Treatment 730
Anterior Approach 730
Anterior Cervical Discectomy and Fusion 731
Multilevel Pathology 732
Cervical Arthroplasty 732
Posterior Cervical Foraminotomy 733
Indications for Posterior Cervical Foraminotomy 734
Open Technique 734
Minimally Invasive Technique 734
Surgical Outcomes 735
Summary 736
Pearls 736
Pitfalls 736
References 736
42 Management of Cervical Myelopathy 739
Introduction 739
Pathophysiology 739
Natural History 739
Classification 740
History and Physical Examination 740
Imaging 741
Goals of Management 742
Surgical Approach Considerations 742
Anterior Procedures for the Cervical Spine 743
Anterior Approach to the Cervical Spine 743
Complications and Risks of the Anterior Approach to the Cervical Spine 744
Anterior Cervical Discectomy and Fusion 745
Procedure 745
Outcomes, Complications, and Other Considerations 746
Anterior Cervical Corpectomy and Fusion 746
Procedure 746
Outcomes, Complications, and Other Considerations 750
Anterior Cervical Discectomy and Fusion Versus Anterior Cervical Corpectomy and Fusion 750
Posterior Procedures for the Cervical Spine 751
Posterior Approach to the Cervical Spine 751
Laminectomy and Fusion 752
Procedure 752
Outcomes, Complications, and Other Considerations 753
Cervical Laminoplasty 753
Open-Door Laminoplasty Procedure 753
Outcomes, Complications, and Other Considerations 756
Laminectomy With Fusion Compared With Laminoplasty 756
Dome Laminectomy 756
Combined Approaches 756
Conclusion 757
Key References 757
References 757
43 Ossification of the Posterior Longitudinal Ligament 763
Etiology 763
Genetic Factors 763
Environmental Factors 763
Pathology 764
Classification 764
Natural History 764
Clinical Features 764
Risk Factors for Myelopathy 764
Imaging 764
Plain Radiographs 764
Computed Tomography 765
Magnetic Resonance Imaging 765
Treatment for OPLL Involving the Cervical Spine 765
Conservative Treatment 765
Surgical Treatment 767
Anterior Approaches 767
Posterior Approaches 767
Outcome of Surgical Treatment 767
Factors Associated With Poor Surgical Outcome 767
Treatment for OPLL Involving Thoracic Spine 767
Summary 768
References 768
44 Cervical Disc Replacement 771
Background 771
History of Disc Arthroplasty and Device Design 772
Indications for Use, Contraindications, and Complications 774
Preoperative Imaging 776
Technique of Implantation 777
Postoperative Imaging 778
Clinical Studies 778
Prestige Disc 778
ProDisc-C 779
Bryan Disc 779
Mobi-C 779
Future Direction 780
Biomechanics 780
Pearls 781
Pitfalls 781
Key Points 781
Key References 782
References 782
VI Thoracic and Lumbar Disc Disease 785
45 Thoracic Disc Disease 787
Historical Background 787
Epidemiology 787
Etiology 788
Pathogenesis 789
Clinical Presentation 789
Level and Classification of Herniation 790
Natural History 791
Differential Diagnosis 791
Diagnostic Evaluation 792
Spine Radiographs 792
Myelography 792
Computed Tomography 792
Magnetic Resonance Imaging 794
Discography 795
Treatment 796
Video-Assisted Thoracoscopic Surgery 799
Minimally Invasive Techniques 800
Summary 801
Pearls 801
Pitfalls 801
Key Points 801
Key References 801
References 802
46 Lumbar Disc Disease 807
Introduction 807
Natural History 807
Relevant Anatomy 808
Nucleus Pulposus 808
Anulus Fibrosus 808
End Plate Cartilage 808
Defining the IVD Niche: Molecular Characters 809
Changes in Disc Structure With Aging and Degeneration 811
Associated Factors 811
Pathophysiology 812
Internal Disc Disruption 812
Degenerative Disc Disease 812
Defining Features of the Degenerating Disc 813
Subclinical Bacterial Infection of the Spinal Motion Segment as a Possible Initiator of Low Back Pain 813
Damage-Associated Molecular Patterns as Mediators of Chronic Inflammation and Low Back Pain 814
Systemic Metabolic Syndrome as a Driver of Disc Inflammation and Low Back Pain 815
Effect of Disc Degeneration on Nerves 815
Clinical Picture 816
Internal Disc Disruption 816
Degenerative Disc Disease 816
Diagnostic Imaging 816
Plain Radiography 816
Computed Tomography 817
Magnetic Resonance Imaging 817
Contrast-Enhanced Magnetic Resonance Imaging 818
High-Intensity Zone 818
Dark Disc 819
Modic End Plate Changes 819
Axially and Vertically Loaded Magnetic Resonance Imaging 820
Discography 820
Treatment 821
Nonoperative Treatment 821
Bed Rest and Advice to Stay Active 822
Orthotics 822
Physical Therapy 823
Adjunctive Modalities 823
Manual Therapy and Complementary/Alternative Medicine Therapies 823
Pharmacotherapy 824
Nonsurgical Interventional Therapies 825
Epidural Spinal Injection 825
Intradiscal Injection 825
Thermal Annuloplasty 826
Surgical Treatment 827
Spinal Fusion 827
Fusion Technologies 828
Adjacent-Segment Degeneration 828
Biologic Treatment of Degenerative Disc Disease 828
Summary 828
Key Points 828
Key References 828
References 829
47 Lumbar Disc Herniations 839
Pathoanatomy 839
Pathophysiology 840
Disc Degeneration and Herniation 840
Disc Herniation and Sciatica 841
Disc Herniation and Back Pain 842
Classification of Disc Herniations 842
Morphology 842
Location 842
Timing 842
History and Symptoms 843
Physical Examination 844
Inspection 844
Palpation and Percussion 845
Neurologic Examination 845
Specific Tests 845
Differential Diagnosis 846
Diagnostic Imaging 846
Plain Radiographs 847
Magnetic Resonance Imaging 847
Magnetic Resonance Imaging in the Postoperative Spine 848
Myelography 848
Computed Tomography 849
Natural History 849
Methods of Nonoperative Treatment 849
Physiotherapy 849
Pharmacologic Treatment 850
Operative Versus Nonoperative Treatment 850
Operative Treatment 851
Indications 851
Available Techniques 852
Open Simple Discectomy 852
Timing 852
Technique 853
Postoperative Care and Rehabilitation 855
Outcomes 856
Complications 858
Recurrent Disc Herniations 858
Discectomy in Children 859
Discectomy in Elderly Patients 859
Foraminal and Extraforaminal (Far-Lateral) Herniations 859
Cauda Equina Syndrome 860
Alternatives to Standard Discectomy 861
Endoscopic Discectomy 861
Percutaneous Automated Discectomy 862
Chemonucleolysis 863
Pearls 863
Pitfalls 863
Key Points 863
Key References 863
References 864
48 Annular Repair 869
Introduction 869
Anulus Fibrosus 869
Effect of Aging on the Anulus Fibrosus 869
Healing of the Anulus 870
Biologic Repair 870
Surgical Repair 870
Summary 871
Key References 871
References 871
49 Lumbar Disc Degeneration 873
Anterior Lumbar Surgical Approach 873
Indications for Interbody Fusions 877
Interbody Implants and Graft Material 877
Indications for Total Disc Replacement 880
Implants and Design 880
Postoperative Management 884
Complications 884
Acknowledgment 885
Pearls and Pitfalls: ALIF 885
Pearls: TDR 886
Pitfalls: TDR 886
Key Points: ALIF 886
Key Points: TDR 886
Key References 886
References 887
50 Posterior Lumbar Interbody Fusion 891
Introduction 891
Historical Perspective 891
Indications for Interbody Fusion 892
Biomechanics of Interbody Fusion 893
Cage Characteristics 894
Subsidence 896
Our Preferred Technique 897
Optimal Graft Material 900
Posterior Lumbar Interbody Fusion Versus Transforaminal Lumbar Interbody Fusion 901
Outcome and Complications of Posterior Lumbar Interbody Fusion 903
Summary 903
References 904
51 Posterolateral and Lateral Corpectomies 907
Posterolateral and Lateral Corpectomy in the Thoracic Spine 907
Historical Perspective 907
Indications and Choice of Approach 908
Surgical Technique 908
Posterolateral Approaches 908
Lateral Approaches 909
Outcomes 910
Disc Herniation 910
Posterolateral and Lateral Corpectomy in the Lumbar Spine 910
Historical Perspective 910
Indications 911
Technique 911
Posterolateral 911
Lateral Transpsoas Approach (Extreme or Direct Lateral Approach) 911
Outcomes 912
Lateral Extracavitary Approach 912
Costotransversectomy 913
Lateral/Posterolateral/Posterior Minimally Invasive Surgical Thoracic and Lumbar Corpectomy 913
Summary 914
References 914
52 Dynamic Stabilization 917
Understanding Spinal Instability 917
Biomechanical Goals of a Posterior Dynamic Stabilization Device 917
Motion Preservation 917
Load Transmission 918
Resistance to Fatigue Failure 918
Dynamic Stabilization Devices 920
Indications for Pedicle Screw–Based Posterior Dynamic Stabilization 920
Indications for Interspinous Process Distraction 920
Clinical Experience With Dynamic Stabilization 920
Pedicle Screw–Based Posterior Dynamic Stabilization Devices 920
Dynesys Dynamic Stabilization System 921
Interspinous Distraction Devices 925
Summary 928
Pearls 928
Pitfalls 929
Key References 929
References 929
VII Minimally Invasive Surgery 933
53 Rationale of Minimally Invasive Spine Surgery 935
Introduction 935
Anatomy of the Posterior Paraspinal Muscles 935
Multifidus Muscle 935
Erector Spinae Muscles 936
Interspinales, Intertransversarii, and Short Rotator Muscles 937
Innervation of the Posterior Paraspinal Muscles 937
Fiber Type Characteristics of the Paraspinal Muscles 937
Paraspinal Muscle Injury 938
Characteristics of Paraspinal Muscles in the Postsurgical Spine 938
Mechanism of Paraspinal Muscle Injury During Surgery 938
Correlation of Muscle Injury With Clinical Outcomes 939
Preservation of Muscle Function and Integrity 939
Preservation of the Bone-Ligament Complex 939
Summary 940
Key References 941
References 941
54 Minimally Invasive Posterior Approaches to the Spine 945
Surgical Anatomy of the Posterior Paraspinal Muscles 945
Key Concepts for Minimally Invasive Spine Retraction Systems 945
Minimally Invasive Spine Surgical Corridor 945
Posterior Lumbar Approaches 945
Tubular Microdiscectomy 945
Lumbar Decompression 946
Posterior Lumbar Interbody Fusion 949
Percutaneous Pedicle Screw Instrumentation 952
Limitations and Drawbacks 952
Radiation Exposure 952
Learning Curve for Minimally Invasive Spinal Surgery 953
Summary 955
Pearls 955
Pitfalls 955
Key Points 955
Key References 955
References 956
55 Minimally Invasive Posterior Lumbar Instrumentation 959
Overview 959
Indications and Contraindications 959
Technical Outcomes of Transpedicular Lumbar Instrumentation 961
Traditional (“Mini-Open”) Pedicle Screws 961
Percutaneous Pedicle Screws 962
Technique of Percutaneous Pedicle Screw Placement 962
Studies Comparing Mini-Open and Percutaneous Pedicle Screws 964
Consideration for Radiation Exposure 965
Fluoroscopic Versus Navigation-Assisted Spinal Instrumentation 965
Intraoperative Electrophysiological Monitoring 966
Pearls and Pitfalls 966
Key Points 966
Key References 966
References 966
56 Minimally Invasive Posterior Lumbar Fusion Techniques 969
Introduction 969
Principles of Minimally Invasive Spinal Surgery 969
Surgical Setup for a Posterior Fusion Procedure 970
Setup and Imaging 970
Surgical Incisions and Approach 971
Spinal Decompression 972
Posterior Interbody and Transforaminal Interbody Fusion 972
Posterolateral Fusion (Intertransverse Onlay Fusion) 973
Facet Fusion 973
Pedicle Screw Instrumentation 973
Cannulated Pedicle Screw Insertion 974
Technical Tips 977
Direct Pedicle Screw Insertion via a Paramedian Approach 978
Facet Screw Instrumentation 978
Patient Selection 979
Summary 980
References 980
57 Posterolateral Endoscopic Lumbar Discectomy 983
History 983
Anatomy 985
Indications and Contraindications 985
Posterolateral Endoscopic Lumbar Discectomy 987
Step-by-Step Operative Technique 987
Patient Positioning 987
Anesthesia 987
Needle Placement 987
Evocative Chromodiscography 989
Instrument Placement 989
Performing the Discectomy 989
Clinical Outcomes 990
Complications and Avoidance 991
Future Considerations 991
Pearls 991
Pitfalls 992
Key Points 992
Key References 992
References 992
58 Interspinous Process Decompressive Devices 995
Introduction 995
Design Rationale 995
Surgical Technique 997
Clinical Results 997
Summary 998
Pearls 998
Pitfalls 998
Key Points 998
Key References 998
References 998
59 Minimally Invasive Cervical Spine Techniques 1001
Introduction 1001
Anterior Cervical Minimally Invasive Applications 1001
Endoscopic Anterior Discectomy 1001
Indications and Contraindications 1001
Clinical Evaluation 1002
Surgical Technique 1002
Clinical Outcomes and Published Studies 1002
Cervical Microendoscopic Discectomy and Fusion 1003
Indications and Contraindications 1003
Clinical Evaluation 1003
Surgical Technique 1003
Clinical Outcomes and Published Studies 1005
Posterior Cervical Minimally Invasive Applications 1005
Minimally Invasive Cervical Laminoforaminotomy 1005
Indications and Contraindications 1005
Clinical Evaluation 1005
Surgical Technique 1005
Clinical Outcomes and Published Studies 1007
Minimally Invasive Lateral Mass Fixation 1007
Indications and Contraindications 1007
Surgical Technique 1007
Clinical Outcomes and Published Studies 1008
Conclusions 1008
Key References 1009
References 1009
60 Future Directions in Minimally Invasive Spinal Surgery 1011
Minimally Invasive Approaches to the Spine: Understanding the Anatomy and Designing Retractors 1011
Percutaneous Pedicle Screw Placement, Image Guidance and Robotics 1011
Motion Preservation Techniques 1012
Spinal Radiosurgery for the Treatment of Metastatic Spine Diseases 1012
Spinal Biologics 1013
Summary 1013
References 1013
VIII Spinal Stenosis 1017
61 Spinal Stenosis 1019
Anatomy 1019
Disc 1019
Facet Joints 1020
Intervertebral Foramen 1020
Cauda Equina 1021
Classification 1021
Deformity and Instability 1022
Pathophysiology 1022
Natural History 1022
Clinical Presentation 1023
Physical Examination 1024
Diagnostic Studies 1024
Radiography 1024
Computed Tomography With and Without Myelography 1025
Magnetic Resonance Imaging 1026
Electromyography, Nerve Conduction Studies, and Somatosensory Evoked Potentials 1026
Differential Diagnosis 1027
Summary 1028
Pearls 1029
Pitfalls 1029
Key Points 1029
Key References 1029
References 1029
62 Nonoperative Management of Lumbar Spinal Stenosis 1033
Clinical Aspects 1033
Natural History of Lumbar Spinal Stenosis 1033
Nonoperative Management 1034
Drug Therapy 1034
Physical Therapy 1034
Epidural Corticosteroid Injection 1035
Lumbar Spinal Stenosis: Evidence-Informed Approach to Management 1035
Pearls 1036
Pitfalls 1036
Key Points 1036
Key References 1036
References 1036
63 Surgical Management of Lumbar Spinal Stenosis 1039
Indications for Surgery 1039
Laminectomy 1039
Outcomes of Laminectomy 1043
Arthrodesis After Laminectomy 1044
Laminotomy 1045
Fenestration 1046
Laminoplasty 1046
Microendoscopic Decompressive Laminotomy 1047
Interspinous Process Devices 1049
Postoperative Care 1050
Complications 1051
Pearls and Pitfalls 1053
Key Points 1053
Key References 1053
References 1054
64 Degenerative Spondylolisthesis 1059
Epidemiology and Biomechanics 1059
Natural History 1060
Clinical Features 1060
Radiographic Diagnosis 1061
Treatment 1062
Decompression Without Fusion 1062
Noninstrumented Posterolateral Fusion 1063
Posterior Instrumented Fusion 1065
Posterior Fusion With Anterior Column Support 1068
Alternative Surgical Strategies 1069
Summary of Treatment Options 1070
Summary 1070
Pearls and Pitfalls 1071
Key References 1071
References 1071
IX Spinal Fusion and Instrumentation 1075
65 Techniques and Complications of Bone Graft Harvesting 1077
Surgical Anatomy and Techniques 1077
Anterior Iliac Crest 1077
Posterior Iliac Crest 1079
Rib 1079
Fibula 1079
Complications of Bone Graft Harvesting 1081
General 1081
Hematoma 1081
Infection 1081
Anterior Iliac Crest 1081
Nerve Injuries 1082
Pain 1082
Posterior Iliac Crest 1082
Cluneal Nerve Injury 1082
Sciatic Nerve Injury 1082
Superior Gluteal Artery Injury 1082
Pain 1083
Fracture 1083
Fibula 1083
Rib 1083
Key References 1083
References 1084
66 Principles of Bone Fusion 1085
Biology of Fusion Sites 1085
Bone Graft Biology and Materials 1086
Autogenous Cancellous Bone 1087
Autologous Cortical Bone 1088
Vascularized Autologous Grafts 1088
Autologous Bone Marrow 1088
RIA (Reamer-Irrigator-Aspirator) 1090
Structural Bone Allografts and Cages 1090
Demineralized Allograft Bone Matrix 1092
Deproteinated Heterologous Bone 1093
Synthetic Bioactive Bone Graft Materials 1093
Bone Morphogenetic Proteins 1093
Risks and Adverse Events Associated With Use of Bone Morphogenetic Proteins in Spine Fusion 1095
Opportunities for Improving or Refining the Use of BMPs and Other Bioactive Molecules 1100
Other Growth Factors 1101
Collagen 1101
Noncollagenous Matrix Proteins 1101
Ceramics 1102
Systemic/Patient-Specific Factors Influencing Bone Healing in Spine Fusion 1103
Local Factors Influencing Bone Healing in Spine Fusion 1103
Future Considerations 1105
Key Points 1105
Key References 1105
References 1106
67 Bone Substitutes 1123
Allografts 1123
Ceramics 1125
Demineralized Bone Matrices 1125
Osteoinductive Growth Factors 1126
Autologous Platelet Concentrate 1128
Mesenchymal Stem Cells 1128
Gene Therapy 1129
Conclusion 1130
Key Points 1130
Key References 1130
References 1130
68 Electrical Stimulation for Spinal Fusion 1137
History of Electrical Stimulation 1137
Methods of Electrical Stimulation 1137
Direct Current Electrical Stimulation 1137
Direct Current Stimulation: Mechanism of Action 1137
Direct Current Stimulation: Clinical Application 1138
Capacitive Coupling Electrical Stimulation 1138
Capacitive Coupling Stimulation: Mechanism of Action 1138
Capacitive Coupling Stimulation: Clinical Application 1138
Inductive Coupling Electrical Stimulation 1139
Pulsed Electromagnetic Fields: Mechanism of Action 1139
Clinical Studies of Pulsed Electromagnetic Fields 1139
Electrical Stimulators: Quality of the Evidence 1139
Conclusions and Future Direction 1140
Key Points 1140
Key References 1140
References 1140
69 Cervical Instrumentation 1143
Introduction and Overview 1143
Relevant Anatomy for Spinal Instrumentation 1143
Fluoroscopy and Navigation for Cervical Spine Instrumentation 1146
Selecting the Biomechanically Correct Implant 1147
Biomechanical Principles and Functional Modes 1148
Anterior Spinal Instrumentation 1149
Anterior Screw Stabilization of the Upper Cervical Spine 1150
Anterior Cervical Plating 1150
Evolution and Mechanics of Anterior Cervical Plates 1151
Cervical Plating: Indications and Rationale 1153
Cervical Plating: Technique 1153
Cervical Plating: Outcomes and Complications 1154
Anterior Cervical Cages 1155
Mechanics and Rationale 1155
Implant Selection and Technique Notes 1157
Bone Graft Selection 1158
Technique 1158
Outcomes and Complications 1158
Cervical Disc Arthroplasty 1159
Posterior Cervical Instrumentation 1160
Occipitocervical Instrumentation 1160
Nonrigid Occipitocervical Systems 1160
Rigid Occipitocervical Instrumentation 1161
Outcomes and Complications 1162
Atlantoaxial Instrumentation 1163
Gallie and Brooks Techniques 1163
Magerl Transarticular Screws 1164
C1 Lateral Mass Screws and the Goel-Harms Technique 1165
C2 Fixation Options 1166
Other C1–C2 Stabilization Options 1167
Posterior Subaxial Instrumentation 1167
Posterior Wiring 1167
Rigid Posterior Mid-Cervical Instrumentation 1168
Cervical Hooks 1169
Lateral Mass Screws 1169
Mid and Lower Cervical Pedicle Screws 1171
Lower Cervical Transarticular Screws 1172
Posterior Cervical Rods and Cross-Links 1172
Facet Spacers 1172
Laminoplasty Implants 1172
Conclusions 1173
Key Points 1173
Key References 1173
References 1174
70 Thoracic and Lumbar Instrumentation 1187
Introduction 1187
Overview and History 1187
Relevant Anatomy 1188
Biomechanics of Thoracolumbar Instrumentation 1190
Implant Materials and Fusion Characteristics 1191
Demand Matching, Improving Fixation, and the Implications of Osteoporosis 1193
Posterior Thoracolumbar Instrumentation 1195
Interspinous Process Stabilization 1195
Facet-Based Stabilization 1197
Laminar Wires, Ribbons, and Hooks 1198
Pedicle Screws 1199
Cortical Screws 1203
Pelvic Fixation 1203
Access and Guidance 1204
Rods and Cross-Links 1205
Dynamic Rods 1205
Variable Stiffness Rods 1206
Growing Rods 1206
Cross-Links 1206
Anterior Thoracolumbar Instrumentation 1207
Cages and Struts 1208
Anterior Plates and Screw-Rod Systems 1214
Lumbar Disc Arthroplasty, Nuclear Replacement, and Other Motion-Sparing Approaches 1215
Summary 1217
Key References 1217
References 1217
X Adult Deformity 1227
71 Adult Isthmic Spondylolisthesis 1229
Introduction 1229
Classification 1229
Natural History/Incidence 1229
Pathophysiology 1229
Biomechanics 1231
Diagnosis 1231
History 1231
Physical Examination 1232
Imaging 1232
Differential Diagnosis 1233
Treatment 1233
Nonoperative Treatment 1233
Operative Treatment 1233
Indications 1233
Contraindications 1233
Surgery 1233
Decompression 1234
Direct Pars Repair 1234
Fusion 1234
Reduction of High-Grade Spondylolisthesis 1235
Pearls 1235
Pitfalls 1235
Key Points 1236
Key References 1236
References 1236
72 Adult Scoliosis 1239
Introduction 1239
Terminology 1239
Current Understanding of Spinal Alignment 1239
Spinopelvic Parameters and Health-Related Quality of Life Measures 1242
Ideal Values for Spinopelvic Parameters 1243
Classification Systems for Adult Spinal Deformity 1243
Clinical Presentation of Adult Spinal Deformity Patients 1245
Clinical Evaluation 1245
Imaging Evaluation 1246
Treatment of Adult Scoliosis 1246
Nonoperative Management 1247
Operative Management 1247
Perioperative Considerations 1248
Operative Decision Making 1248
Decompression 1248
Decompression With Limited Fusion 1248
Surgical Approaches in Adult Scoliosis Surgery 1249
Complications of Adult Scoliosis Surgery 1250
Summary 1251
Case Studies 1251
References 1256
73 Fixed Sagittal Imbalance 1261
Introduction 1261
Etiology 1261
Evaluation 1261
Radiographic Assessment 1263
Surgical Management 1264
Surgical Technique 1264
Technique 1266
Surgical Technique 1266
Exposure 1266
Removal/(Re)Instrumentation 1266
Revision/Primary Decompression 1267
Osteotomy and Closure 1267
Assessment of Spinal Balance and Bone Grafting 1267
Avoidance of Complications 1267
Cervical/Cervicothoracic Posterior Osteotomies 1267
Surgical Technique 1267
Midcervical Osteotomy for Fixed Sagittal Imbalance 1268
Vertebral Column Resection 1268
Surgical Technique 1268
Minimally Invasive Surgery 1269
Summary 1270
Key References 1270
References 1270
XI Spine Trauma 1273
74 Basic Science of Spinal Cord Injury 1275
Pathophysiologic Response to Spinal Cord Injury 1275
Hemorrhage and Circulatory Collapse 1275
Oxidative Damage 1275
Excitotoxicity 1275
Mitochondrial Collapse and Cytotoxicity 1276
Neuroimmunologic Response 1276
Astroglial Scar 1276
Basic Science of a Cure 1277
Methylprednisolone 1277
Ganglioside GM-1 1279
Thyrotropin-Releasing Hormone 1279
Nimodipine and Gacyclidine 1279
Regeneration Strategies 1280
Rho Antagonist 1280
Anti-Nogo Antibody 1280
Peripheral Nerve and Schwann Cell Transplantation 1280
Olfactory Ensheathing Glial Cell Transplantation 1280
Stem Cell Strategies 1280
Genetic Modification Strategies 1281
Key Points 1281
Pearls AND Pitfalls 1281
References 1281
75 Injuries of the Upper Cervical Spine 1285
Demographics 1285
Anatomy of the Upper Cervical Spine (Craniocervical Junction) 1286
Clinical Evaluation 1287
Imaging 1288
Initial Stabilization 1289
Specific Injuries to the Upper Cervical Spine 1289
Occipital Condyle Fractures 1289
Atlanto-Occipital Injuries 1290
Fractures of the Atlas 1295
Atlantoaxial Subluxation and Dislocation 1295
Rupture of the Transverse Ligament 1298
Fractures of the Odontoid 1301
Traumatic Spondylolisthesis of the Axis 1303
Summary 1305
Pearls and Pitfalls 1305
Key Points 1305
Key References 1307
References 1307
76 Lower Cervical Spine Injuries 1311
Introduction 1311
Anatomy 1311
Bony Anatomy 1311
Ligamentous Anatomy 1311
Neurovascular Anatomy 1311
Mechanism of Injury 1312
Assessment of the Spine-Injured Patient 1312
Initial Evaluation 1312
Clearing the Cervical Spine 1312
Asymptomatic Patients 1312
Temporarily Not Evaluable 1312
Symptomatic Patients 1313
Obtunded Patients 1313
Neurologic Examination 1313
Spinal Cord Injury Classification 1313
Classification of Injuries 1315
Fracture Stability 1315
Cervical Spine Injury Severity Score 1315
Subaxial Cervical Injury Classification System 1315
AO Cervical Spine Classification 1316
AO Type A Injuries 1316
AO Type B Injuries 1316
AO Type C Injuries 1316
Facet Fractures 1316
General Approach to Treatment of Injuries 1317
Nonoperative Care of Subaxial Cervical Injuries 1317
Soft Collar 1317
Hard Collar 1317
Cervicothoracic Orthosis 1317
Halo Vest 1318
Treatment of Acute Spinal Cord Injury 1318
Transport 1318
Immediate Care of the Spinal-Injured Patient 1318
Hemodynamic Support 1318
Magnetic Resonance Imaging in Acute Spinal Cord Injuries 1318
Neuroprotection 1318
Fracture-Dislocation Reduction 1319
Timing of Surgery 1319
Cranial Tong Technique 1319
Guidelines for Initial Closed Reduction of Subaxial Cervical Fractures 1319
Cranial Tong Insertion 1319
Reduction Technique 1319
Surgical Treatment of Subaxial Cervical Spine Injuries 1320
Surgical Goals 1320
Indications 1320
Surgical Approach 1320
Anterior Decompression and Fusion 1321
Posterior Approach 1321
Anteroposterior Approach 1321
Treatment of Specific Fracture Types 1321
AO Compression Injuries Type A1 and A2 1321
AO Compression Injuries Type A3 and Type 4 1321
AO Distractive Injuries Type B1 1322
AO Distractive Injuries Type B2 1322
AO Distractive Injuries Type B3 1322
AO Translational/Rotational Injuries Type C 1322
Unilateral Facet Dislocations 1322
Bilateral Facet Dislocations 1322
Traumatic Spondylolisthesis 1326
Hyperextension Subluxations 1326
AO Facet Fractures F1 and F2 1326
AO Facet Fractures F3 1327
AO Facet Fractures F4 1327
Special Cases 1327
Fractures in Patients With Ankylosed Spines 1327
Vertebral Artery Injury 1327
Central Cord Syndrome 1327
Traumatic Disc Herniation 1327
Adverse Events 1327
Neurologic Deterioration 1327
Wound Infections 1328
Loss of Reduction 1328
Venous Thromboembolism 1330
Pulmonary Events 1330
Summary 1330
Pearls 1330
Pitfalls 1330
Key Points 1330
Key References 1330
References 1331
77 Thoracic and Lumbar Spinal Injuries 1333
Incidence 1333
Anatomic Considerations 1333
Mechanisms of Injury 1333
Initial Evaluation and Management 1333
Initial Neurologic Evaluation 1334
Neurologic Injury Classification 1335
Radiologic Evaluation 1336
Concept of Spinal Stability and Its Role in Fracture Classification Systems 1336
Fracture Classification Systems 1337
Description and Diagnosis of Specific Fracture Types 1338
Sprains 1338
Disc Herniations 1339
Minor Fractures 1339
Compression Fractures 1339
Burst Fractures 1339
Flexion-Distraction Injuries (Chance Fractures and Chance Variants) 1340
Fracture-Dislocations 1340
Extension and Extension-Distraction Injuries 1341
Penetrating Injuries 1342
General Treatment Principles: Operative and Nonoperative 1342
Bracing Principles 1342
Surgical Principles 1344
Surgical Principle Number 1: Achieving and Maintaining Anatomic Reduction and Stability—Surgical Approach and Instrumentation Choice 1344
Surgical Principle Number 2: Decompression 1344
Surgical Principle Number 3: Minimization of Construct Length 1344
Surgical Principle Number 4: Appropriate Surgical Timing 1345
Surgical Principle Number 5: Avoidance of Complications 1345
Contemporary Concepts in Surgical Treatment of Thoracolumbar Spine Injuries 1345
Spinal Stabilization Without Fusion 1345
Minimally Invasive Stabilization Using Percutaneous Instrumentation 1346
Balloon-Assisted Reduction and Cement Augmentation of Thoracolumbar Fractures 1350
Treatment of Specific Injuries 1350
Sprains and Minor Fractures 1350
Traumatic Disc Herniations 1350
Compression Fractures 1351
Burst Fractures 1351
Flexion-Distraction Injuries (Chance Fractures and Chance Variants) 1353
Fracture-Dislocations 1354
Extension and Extension-Distraction Injuries 1354
Penetrating Injuries: Gunshot Wounds 1356
Summary 1357
Pearls 1357
Pitfalls 1357
Key Points 1357
Key References 1358
References 1358
78 Sacral Fractures 1365
Anatomic and Biomechanical Considerations 1365
History and Classification 1368
Evaluation 1372
General Principles 1375
Nonoperative Treatment 1378
Operative Treatment 1378
Neurologic Decompression 1378
Fracture Reduction Techniques 1380
Unilateral Injuries 1380
Bilateral Injuries 1380
Surgical Stabilization Techniques 1382
AO Sacral Fracture Classification Type A Injuries 1382
AO Sacral Fracture Classification Type B Injuries 1382
AO Sacral Fracture Classification Type C Injuries 1383
Summary 1384
Pearls 1384
Pitfalls 1384
Key Points 1384
Key References 1385
References 1385
79 Acute Treatment of Patients With Spinal Cord Injury 1389
Introduction 1389
Epidemiology 1389
Initial Evaluation 1389
Blood Pressure Management 1390
Surgical Timing 1392
Neuroprotective Strategies 1393
Steroids 1393
GM-1 Ganglioside 1393
Hypothermia 1394
Managing Body Systems Complications Related to Spinal Cord Injury 1394
Pulmonary 1394
Integument 1394
Thromboembolic 1394
Urinary 1395
Nutrition 1395
Rehabilitation 1395
Summary 1395
Pearls 1395
Pitfalls 1395
Key Points 1395
Key References 1396
References 1396
80 Vertebral Artery Injuries Associated With Cervical Spine Trauma 1399
Anatomy 1399
Epidemiology 1399
Mechanism and Types of Arterial Injury 1400
Clinical Diagnoses 1401
Imaging Modalities 1402
Screening 1403
Treatment 1404
Summary 1404
Pearls 1405
Pitfalls 1405
Key Points 1405
Key References 1405
References 1405
81 Spinal Orthoses for Traumatic and Degenerative Disease 1409
Biomechanics and Biomaterials 1409
Cervical Orthoses 1410
Cervicothoracic Orthoses 1414
Halo Vest 1416
Application Principles 1417
Biomechanical Analysis 1418
Complications 1419
Pediatric Considerations 1420
Noninvasive Halo 1420
Thoracolumbar and Sacral Orthoses 1420
Flexible Thoracolumbosacral and Lumbosacral Orthoses 1420
Rigid Thoracolumbosacral and Lumbosacral Orthoses 1421
Summary 1426
Acknowledgment 1426
Pearls 1426
Pitfalls 1426
Key Points 1426
Key References 1427
References 1427
82 Spinal Cord Injury Rehabilitation 1431
Epidemiology 1431
Incidence, Race, Age, and Gender 1431
Life Expectancy 1432
Mortality 1432
Etiology 1432
Classification of SCI 1432
Clinical Syndromes 1434
Central Cord Syndrome 1434
Anterior Cord Syndrome 1434
Posterior Cord Syndrome 1434
Brown-Séquard Syndrome 1434
Conus Medullaris, Epiconus, and Cauda Equina Syndromes 1434
Therapy Approaches 1435
Medical Management 1437
Neurogenic Bowel Dysfunction 1437
Neurogenic Bladder Dysfunction 1437
Spasticity 1437
Cardiovascular Complications 1438
Respiratory Complications 1439
Pressure Ulcers 1439
Heterotopic Ossification 1439
Osteoporosis and Fractures 1440
Pain 1440
Outcomes of Rehabilitation 1440
Length of Stay 1440
Discharge Disposition 1440
Gain of Motor Function 1441
Functional Independence (Charting ADL Improvement Objectively) 1441
Employment 1442
Community Integration 1442
Reintegration Into the Environment 1442
Acknowledgments 1443
Pearls 1443
Pitfalls 1443
Key Points 1443
Key References 1443
References 1444
XII Afflictions of the Vertebrae 1447
83 Arthritic Disorders 1449
Ankylosing Spondylitis 1449
Epidemiology 1449
Pathogenesis 1450
Clinical History 1450
Neurologic Complications 1450
Atlantoaxial Subluxation 1450
Spinal Fracture 1451
Spondylodiscitis 1451
Extraarticular Manifestations 1451
Physical Examination 1451
Laboratory Data 1452
Radiographic Evaluation 1452
Differential Diagnosis 1453
Psoriatic Arthritis 1454
Reactive Arthritis 1455
Enteropathic Arthritis 1456
Diffuse Idiopathic Skeletal Hyperostosis 1457
Treatment 1457
Nonsteroidal Antiinflammatory Drugs 1457
Muscle Relaxants 1457
Corticosteroids 1458
Anti–Tumor Necrosis Factor-α Inhibitors 1458
Prognosis 1458
Rheumatoid Arthritis 1458
Epidemiology 1458
Pathogenesis 1458
Clinical History 1458
Cervical Subluxation 1459
Physical Examination 1459
Laboratory Data 1460
Radiographic Evaluation 1460
Differential Diagnosis 1461
Treatment 1461
Nonsteroidal Antiinflammatory Drugs 1461
Disease-Modifying Antirheumatic Drugs 1461
Biologic Therapies, Including Anti–Tumor Necrosis Factor-α Inhibitors 1462
Immunosuppressive Agents 1462
Cervical Spine Therapy 1463
Prognosis 1463
Pearls 1463
Pitfalls 1463
Key Points 1463
Key References 1463
References 1463
84 Surgical Management of Rheumatoid Arthritis 1467
Historical Perspective 1467
Pathophysiology 1467
Natural History 1468
Clinical Presentation 1468
Radiologic Evaluation 1469
Nonsurgical Treatment 1471
Surgical Management 1471
Indications 1471
Preoperative Assessment 1472
Perioperative Management of Rheumatoid Medication 1472
Operative Procedures 1473
Atlantoaxial (C1–C2) Instability 1473
Wire Techniques 1473
Transarticular Screw Fixation 1474
Posterior C1–C2 Intraarticular Screw Fixation 1474
Posterior C1–C2 Screw-Rod Constructs 1475
Cranial Settling or Atlantoaxial Subluxation With C1 Stenosis 1477
Occipitocervical Fusion 1477
Wiring and Graft Technique 1477
Occipitocervical Plating 1477
Contoured Loop/Rod Techniques 1478
Resection of the Odontoid 1478
Subaxial Subluxation 1479
Anterior Fusion 1479
Wiring Techniques 1480
Lateral Mass Fixation 1480
Complications 1480
Thoracolumbar Disease 1480
Summary 1481
Pearls 1481
Pitfalls 1481
Key Points 1481
Key References 1482
References 1482
85 Ankylosing Spondylitis 1487
Pathophysiology 1487
Nonorthopaedic Manifestations 1488
Physical Examination and Diagnosis 1488
Management of Acute Injury 1488
Deformity 1491
Preoperative Assessment 1491
Lumbar Osteotomies 1492
Thoracic Osteotomies 1494
Cervicothoracic Osteotomy 1495
Summary 1498
Pearls 1498
Pitfalls 1498
Key Points 1499
Key References 1499
References 1499
86 Tumors of the Spine 1503
Introduction 1503
Imaging Techniques 1503
Summary of Imaging Appearance 1504
Biopsy Techniques 1504
Primary Tumors 1504
Benign Tumors 1505
Osteochondroma 1505
Hemangioma 1505
Eosinophilic Granuloma 1506
Osteoblastoma/Osteoid Osteoma 1506
Aneurysmal Bone Cyst 1508
Giant Cell Tumor 1509
Malignant Tumors 1510
Osteosarcoma 1510
Ewing Sarcoma 1511
Chordoma 1511
Chondrosarcoma 1513
Multiple Myeloma and Solitary Plasmacytoma 1513
Metastatic Tumors 1515
Pathophysiology of Metastasis 1515
Clinical Presentation 1516
Diagnosis 1516
Treatment 1517
Treatment 1518
Indications for Surgery 1518
Staging 1518
Surgical Approach 1519
Resections 1520
Decompression 1520
Spine Stability 1520
Summary 1521
Key Points 1521
Key References 1522
References 1522
87 Infections of the Spine 1525
Infections of the Spine 1525
Historic Perspective 1525
Pyogenic Infections 1526
Postoperative Wound Infections 1526
Spinal Intradural Infections 1526
Vertebral Osteomyelitis 1526
Epidemiology 1526
Etiology 1526
Bacteriology 1526
Pathogenesis/Pathology 1527
Clinical Presentation 1528
Diagnostic Evaluation 1530
Laboratory Evaluation 1530
Imaging Studies 1532
Biopsy 1536
Management 1536
Surgical Treatment 1537
Prognosis 1540
Epidural Abscess 1542
Epidemiology 1542
Etiology 1542
Bacteriology 1542
Pathogenesis/Pathology 1543
Clinical Presentation 1543
Diagnostic Evaluation 1544
Imaging Studies 1544
Management 1545
Nonoperative Treatment in the Neurologically Intact Patient 1545
Surgical Treatment 1546
Prognosis 1547
Granulomatous Infections 1547
Tuberculosis 1547
Etiology 1548
Bacteriology 1548
Pathogenesis/Pathology 1548
Clinical Presentation 1549
Diagnostic Evaluation 1550
Management 1552
Surgical Treatment 1553
Prognosis 1556
Mortality 1556
Relapse 1557
Kyphosis 1557
Neurologic Deficit 1558
Fusion 1558
Actinomycosis 1558
Nocardiosis 1559
Brucellosis 1559
Fungal Infections 1560
Laboratory Studies 1561
Histology 1561
Imaging Studies 1561
Treatment 1563
Nonoperative Treatment 1563
Surgical Treatment 1563
Posterior Decompression Without Fusion 1564
Posterior Decompression With Fusion and Instrumentation 1564
Anterior Decompression and Fusion With Posterior Stabilization 1564
Percutaneous Techniques 1564
Coccidioidomycosis 1564
Blastomycosis 1566
Cryptococcosis 1567
Candidiasis 1567
Aspergillosis 1568
Syphilitic Disorders of the Spine 1569
Pearls 1569
Pitfalls 1569
Key Points 1569
Key References 1570
References 1570
88 Metabolic Bone Disorders of the Spine 1585
Cellular Biology 1585
Bone Cells 1585
Bone Matrix 1586
Bone Mineral 1587
Collagen 1587
Ground Substance 1587
Skeletal Homeostasis 1588
Mineral Homeostasis 1588
Calcium 1588
Phosphate 1589
Regulators of Bone and Mineral Metabolism 1590
Parathyroid Hormone 1590
Vitamin D 1590
Fibroblast Growth Factor-23 (FGF-23) 1591
Calcitonin 1591
Osteoporosis 1591
Pathology 1592
Clinical Course 1593
Diagnosis 1594
Evaluation for Osteoporosis 1595
Laboratory Investigations for Osteoporosis 1595
Biochemical Markers of Bone Turnover 1596
Evaluation for Secondary Osteoporosis 1596
Prevention and Treatment 1597
Nutrition, Calcium, and Vitamin D Supplementation 1597
Exercise 1597
Pharmacologic Treatment 1598
Estrogen 1598
Selective Estrogen Receptor Modulators (SERMs) 1598
Bisphosphonates 1598
Calcitonin 1599
Anabolic Agents 1599
Denosumab 1599
Pharmacologic Agents and Spinal Fusion 1599
Strategies for Treatment of the Osteoporosis Spine Patient 1599
Future Directions 1600
Paget Disease of Bone (Osteitis Deformans) 1600
Pathology 1600
Clinical Course 1601
Diagnosis 1602
Radiographic Assessment 1602
Biochemical Markers 1602
Biopsy 1602
Treatment 1602
Calcium and Vitamin D 1602
Bisphosphonates 1602
Calcitonin 1603
Surgery 1603
Summary 1603
Pearls 1603
Pitfalls 1603
Key Points 1603
Key References 1603
References 1604
89 Osteoporosis 1611
Osteoporotic Vertebral Compression Fractures 1611
Nonsurgical Treatment 1611
Cement Augmentation: Vertebroplasty and Kyphoplasty 1612
Vertebroplasty Versus Kyphoplasty 1613
Indications and Contraindications 1613
Techniques 1614
Vertebroplasty 1614
Kyphoplasty 1614
Complications 1615
Novel Implants 1615
Instrumentation of the Osteoporotic Spine 1615
Posterior Spinal Instrumentation 1616
Interbody Fusion 1617
Considerations in the Cervical Spine 1617
Summary 1620
Pearls 1620
Pitfalls 1620
Key Points 1620
Key References 1620
References 1621
XIII Spinal Cord 1625
90 Intradural Tumors 1627
Intradural Tumors 1627
Epidemiology 1627
Clinical Presentation 1627
Radiologic Diagnosis 1628
Extramedullary Tumors 1628
Meningiomas 1628
Nerve Sheath Tumors 1629
Ependymomas of the Filum Terminale 1629
Less Common Extramedullary Tumors 1630
Paragangliomas 1630
Lipomas 1631
Arachnoid Cysts 1631
Synovial Cysts 1631
Intramedullary Tumors 1631
Ependymomas 1631
Astrocytomas 1632
Hemangioblastomas 1632
Less Common Intramedullary Lesions 1633
Lipomas 1633
Dermoid and Epidermoid Cysts 1633
Cavernous Angiomas 1634
Metastasis 1634
Surgical Treatment 1634
Intradural Extramedullary Tumors 1634
Intramedullary Tumors 1635
Radiation/Chemotherapy/Adjuvant Treatments 1636
XIV Complications of Spinal Surgery 1725
95 Intraoperative Spinal Cord and Nerve Root Injuries 1727
Introduction 1727
Preoperative Position 1727
Cervical Spine Surgery 1727
Anterior Cervical Spine Surgery 1727
Posterior Cervical Spine Surgery 1729
Thoracolumbar Spine Surgery 1730
Posterior Lumbar Surgery 1730
Lateral Lumbar Surgery 1731
Anterior Lumbar Surgery 1732
Pediatric Deformity Correction 1732
Adult Deformity Correction 1733
Summary 1734
Pearls 1734
Pitfalls 1734
Key Points 1734
Key References 1735
References 1735
96 Spinal Dural Injuries 1739
Anatomy and Pathophysiology 1739
Incidence 1739
Risk Factors 1739
Diagnosis 1741
Treatment 1741
Outcomes 1743
Summary 1744
Key References 1744
References 1745
97 Vascular Complications in Spinal Surgery 1747
Introduction 1747
Cervical Spine 1747
Anterior Cervical Vascular Complications 1747
Vertebral Artery 1748
Carotid Artery 1750
Posterior Cervical Vascular Complications 1751
Vertebral Artery 1752
Internal Carotid Artery 1754
Thoracic Spine 1754
Anterior Thoracic Vascular Complications 1754
Segmental Arteries 1755
Artery of Adamkiewicz 1755
Posterior Thoracic Vascular Complications 1757
Aorta 1757
Lumbar Spine 1758
Anterior Lumbar Vascular Complications 1758
Aorta and Vena Cava 1759
Iliolumbar Vein 1763
Left Common Iliac Artery or Vein Thrombosis 1764
Posterior Lumbar Vascular Complications 1765
Aorta, Vena Cava, and Common Iliac Vessels 1765
Other Vascular Complications of Spine Surgery 1767
Thrombosis and Thromboembolism 1767
Epidural and Subdural Hematomas 1768
Superior Mesenteric Artery Syndrome 1769
Blindness via Indirect Vascular Injury 1769
Iliac Crest Bone Graft 1770
Conclusions 1770
Acknowledgment 1771
Pearls 1771
Pitfalls 1771
Key Points 1772
Key References 1773
References 1773
98 Instrumentation Complications 1783
Introduction 1783
Definitions and Classification 1783
Biologic Failure 1784
Infection and Inflammatory Conditions 1784
Bone Quality and Osteoporosis 1786
Dysvascular Change 1787
Biomechanical Failure 1787
Errors in Surgical Strategy 1789
Technical Error in Implementation of Surgical Strategy 1793
Screw and Wire Misplacement 1793
Evolving Accuracy and Means of Detection 1795
Prevention 1795
Plate and Rod Issues 1796
Graft and Cage Issues 1796
Important Structures Affected by Spinal Implant Impingement 1796
Neurologic Structures 1798
Vascular Structures 1798
Bone and Joint 1800
Other Soft Tissue Impingement 1800
Conclusions 1801
Key Points 1801
Key References 1802
References 1802
99 Postoperative Spinal Infections 1807
Introduction 1807
Incidence/Epidemiology 1807
Risk Factors 1808
Microbiology 1810
Diagnostic Modalities 1810
Clinical Presentation 1810
Laboratory Testing 1811
Imaging 1812
Classification 1813
Prevention 1813
Management 1816
Spinal Instrumentation and Infections 1817
Discitis 1818
Epidural Abscess 1818
Complex Wound Closure 1819
Length of Antibiotic Treatment 1819
Summary 1819
Key Points 1819
Pearls 1819
Pitfalls 1820
Key References 1820
References 1820
100 Pseudarthrosis 1827
Introduction 1827
Risk Factors 1827
Spinal Instrumentation and Its Effect on Fusion 1828
Lumbar Spine 1828
Cervical Spine 1828
Bone Grafting and Osteobiologics 1829
Proper Surgical Technique 1829
Lumbar Pseudarthrosis 1829
Evaluation 1829
Management 1831
Cervical Pseudarthrosis 1831
Evaluation 1831
Management 1832
Cost of Pseudarthrosis 1833
Key References 1833
References 1833
101 Adjacent-Segment Disease 1839
Definition 1839
Natural History 1839
Types of Adjacent-Level Degeneration 1840
Etiology 1840
Biomechanical 1840
Genetic 1840
Physiology 1841
Risk Factors 1841
Clinical Scenarios 1841
Adjacent-Segment Disease After Laminectomy 1841
Adjacent-Segment Disease After Lumbar Fusion 1841
Adjacent-Segment Disease After Scoliosis Surgery 1842
Adjacent-Segment Disease After Kyphoplasty 1842
Adjacent-Segment Disease After Sagittal Imbalance Surgery 1843
Surgical Strategies to Treat/Avoid Adjacent-Segment Disease 1843
Total Disc Replacement 1843
Interspinous Devices 1843
Pedicle Screw–Based Dynamic Stabilization 1843
Bone Cement Augmentation of UIV and UIV+1 1844
Minimally Invasive Spine Surgery 1844
Lateral Interbody Fusion 1845
Vertebroplasty for Proximal Junctional Fracture 1845
Cortical Bone Trajectory Screws to Add on to a Fusion 1845
Summary 1846
Pearls 1846
Pitfalls 1846
Key Points 1846
Key References 1846
References 1847
102 Failed Back Surgery Syndrome 1851
What Is Failed Back Surgery Syndrome? 1851
Economic Impact of Failed Back Surgery Syndrome 1852
Symptoms of Failed Back Surgery Syndrome 1852
Causes, Diagnosis, and Treatments of Components of Failed Back Surgery Syndrome 1853
Foraminal or Lateral Recess Stenosis 1853
Painful Disc 1853
Pseudarthrosis 1854
Recurrent Disc Herniation 1855
Neuropathic Pain, Epineural, Perineural, and Intradural Fibrosis (Arachnoiditis) 1856
Facet Joint Pain 1857
Sacroiliac Pain 1857
Sagittal Plane Imbalance and Spinal Deformity 1858
Other Conditions 1859
Summary 1859
Key References 1860
References 1861
XV Failed Surgery 1865
103 Revision Spine Surgery 1867
Patient Evaluation 1867
Leg Pain Versus Back Pain 1868
Physical Examination 1868
Diagnostic Testing 1868
Plain Radiography 1868
Advanced Imaging 1869
Diagnostic Injections 1869
Nonoperative Treatment 1870
Surgical Treatment—Back Pain Predominant 1871
Pseudarthroses and Failed Instrumentation 1871
Painful Hardware 1873
Surgical Treatment—Leg Pain Predominant 1874
Revision Discectomy 1874
Revision Laminectomy and Treatment of Adjacent-Level Stenosis 1875
Preoperative Planning 1875
Technical Aspects of Surgery 1876
Revision Cervical Spine Surgery 1878
Patient Evaluation 1878
Imaging 1878
Additional Testing 1879
Early Postoperative Failure 1880
Late Postoperative Failure 1881
Adjacent-Segment Degeneration 1881
Pseudarthrosis 1883
Failed Multilevel Decompression for Cervical Myelopathy 1883
Pearls 1884
Pitfalls 1884
Key Points 1884
Key References 1884
References 1884
104 Failed Total Disc Arthroplasty 1889
Background 1889
Prevention 1889
Patient Selection 1889
Discectomy and Endplate Preparation 1890
Segmental Mobilization 1891
Implant Sizing, Placement, and Alignment 1892
Failures of Total Disc Arthroplasty 1892
Indications and Technique Issues 1892
Intrinsic Implant Failure 1893
Bone-Implant Interface Failure 1893
Host Response 1894
Deformity/Instability 1894
Neurologic Failure/Neural Impingement 1895
Infection 1895
Diagnosis of Failed Disc Arthroplasty 1896
History 1896
Physical Examination 1896
Imaging 1896
Interventional Procedures 1897
Revision Strategies 1897
Cervical Revision Strategies 1897
Lumbar Revision Strategies 1897
Summary 1898
Key References 1900
References 1900
105 Postoperative Deformity of the Cervical Spine 1903
Introduction 1903
Assessment of Cervical Deformity 1903
Clinical Evaluation 1903
Radiographic Evaluation 1903
Deformity Prevention 1904
Preventing Iatrogenic Cervical Malalignment During Anterior Surgery 1904
Positioning 1904
Decompression 1905
Noninstrumented Fusion 1906
Graft Selection 1906
Anterior Instrumentation 1907
Preventing Iatrogenic Cervical Malalignment During Posterior Surgery 1907
Positioning 1907
Decompression 1908
Noninstrumented Fusion 1909
Inadequate Instrumentation 1910
Surgical Treatment of Iatrogenic Deformity 1912
Cervical Osteotomy Description 1913
Anterior Osteotomy 1913
Posterior Osteotomy 1913
Surgical Algorithm and Case Examples 1914
Prior Laminectomies 1914
Prior Fusion 1915
Prior Anterior Fusion With No Posterior Fusion Mass 1915
Prior Posterior Fusion 1915
Case Study 1 1915
Case Study 2 1916
Case Study 3 1916
Prior Circumferential Fusion 1918
Case Study 4 1918
Case Study 5 1919
Case Study 6 1920
Case Study 7 1921
Case Study 8 1923
Case Study 9 1923
Case Study 10 1925
Case Study 11 1930
Pearls 1931
Pitfalls 1931
Key Points 1931
Key References 1931
References 1934
106 Arachnoiditis and Epidural Fibrosis 1935
Anatomy 1935
Pathogenesis 1935
Etiology 1935
Clinical Features 1937
Radiographic Features 1937
Spinal Epidural Fibrosis 1937
Treatment 1938
Summary 1938
Key Points 1939
Key References 1939
References 1939
XVI Chronic Pain and Rehabilitation 1941
107 Chronic Pain 1943
Chronic Spinal Cord Injury Pain 1943
Spinal Cord Injury Pain Classification 1943
General Mechanism 1944
Recombinant Analgesic Peptides 1945
Neuropathic Spinal Cord Injury Animal Models 1946
Considerations 1946
Description of Spinal Cord Injury Models 1947
Excitotoxin Injection 1947
Acute Trauma to the Spinal Cord 1947
Compression Injury 1948
Photochemical Ischemia 1949
Dorsal Root Avulsion Model 1949
Mechanism of Neuropathic Spinal Cord Injury Pain in Humans 1950
Nonneural Molecular Targets for Spinal Cord Injury Pain 1950
Lipid Signaling 1951
Glial Inhibitors 1951
Summary 1952
Acknowledgment 1952
Key Points 1952
Key References 1952
References 1953
108 Psychological Strategies for Chronic Pain 1961
Pain Perception: Nervous System Attenuation and Amplification 1961
Pain and the Psyche 1962
Psychiatric Comorbidities 1962
Other Psychological Contributors to Chronic Pain 1963
Psychogenic Pain/Somatization: Diagnostic Considerations 1963
Psychogenic Pain/Somatization: Pain Amplifiers 1964
Addiction 1965
Clinical Observations and Clues to Addiction 1965
Psychological Treatments 1966
Cognitive Behavioral Therapies 1966
Mindfulness and Acceptance-Based Therapies 1966
Psychodynamic and Interpersonal Therapies 1968
Education 1968
Psychophysiologic and Relaxation Training 1968
The Role of Exercise 1968
Interdisciplinary Pain Rehabilitation Programs 1968
Summary 1968
Key Points 1969
Key References 1969
References 1969
109 Pharmacologic Strategies in Back Pain and Radiculopathy 1973
Acetaminophen 1973
Nonsteroidal Antiinflammatory Drugs 1974
Muscle Relaxants 1975
Antidepressants 1975
Opioids 1975
Tramadol 1976
Antiepileptics 1977
Other Treatments and Future Prospects 1977
Key Points 1978
Pearls 1978
Pitfalls 1978
Key References 1978
References 1979
110 Physical Therapy 1983
Introduction 1983
Guidelines for Selecting a Physical Therapist 1984
Collaboration Between the Surgeon and the Therapist 1986
Active Versus Passive Physical Therapy 1987
Physical Therapy Levels of Care 1988
Summary 1989
Key Points 1989
Key References 1990
References 1990
111 Functional Restoration in Chronic Spinal Pain 1993
Functional Restoration Principles 1993
Introduction 1993
Which Patients Are Likely to Benefit From Functional Restoration? 1995
Interdisciplinary Functional Restoration Treatment Team 1997
Functional Restoration Preliminaries 1998
Initial Physician Evaluation 1998
Interdisciplinary Evaluation 1998
Second Physician Visit 1999
Insurance Preauthorization 1999
Physical and Functional Capacity Assessment 1999
Range-of-Motion Assessment 2000
Isolated Trunk Strength Assessment 2000
Cardiovascular Fitness Assessment 2001
Whole-Body Task Performance (Functional Capacity) Assessment 2001
Mental Health Assessment 2003
Clinical Interview 2004
Self-Report Questionnaires 2005
Pain Drawing 2006
Function/Disability Questionnaires 2006
Mood Questionnaires 2006
Sleep Disturbance Questionnaires 2006
Fear-Avoidance Questionnaires 2006
Quality-of-Life Questionnaires 2007
Personality Questionnaires 2007
Psychiatric Assessment 2007
Other Symptom Inventories 2007
Treatment Components of Functional Restoration 2007
Sports Medicine Concepts and Physical Training 2007
Psychosocial and Educational Interventions 2008
Psychotherapy 2009
Stress Management and Self-Regulation Training 2010
Didactic Classes 2011
Case Management 2011
Medical Techniques Accompanying Functional Restoration 2011
Interventional Procedures 2011
Medical Psychopharmacology 2012
Functional Restoration Program Treatment Phases 2013
Initial Treatment Phase 2013
Intensive Phase 2014
Postprogram Long-Term Care Plan 2014
Outcome Tracking Phase 2014
Key Points 2015
Key References 2015
References 2017
112 Surgical Procedures for the Control of Chronic Pain 2023
Mechanisms of Chronic Pain Production 2023
Deafferentation Procedures 2025
Rhizotomy and Ganglionectomy 2025
Technique 2027
Facet Rhizotomy 2027
Technique 2028
Sympathectomy 2028
Technique 2029
Stimulation Therapy 2029
Epidural and Intraspinal Implants 2029
Technique 2031
Spinal Cord Stimulation 2031
Technique 2033
Summary 2033
Pearls 2034
Pitfalls 2034
Key Points 2034
Key References 2034
References 2035
Index i1
A i1
B i5
C i7
D i14
E i16
F i17
G i20
H i21
I i22
J i26
K i26
L i27
M i30
N i33
O i35
P i37
Q i41
R i41
S i43
T i52
U i55
V i55
W i56
X i57
Y i57
Z i57
Inside Back Cover ibc1