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Accident and Emergency Radiology: A Survival Guide E-Book

Accident and Emergency Radiology: A Survival Guide E-Book

Nigel Raby | Laurence Berman | Simon Morley | Gerald de Lacey

(2014)

Additional Information

Book Details

Abstract

Since it was first published, Accident and Emergency Radiology: A Survival Guide has become the classic reference and an indispensable aid to all those who work in the Emergency Department. The core and substantial value lies in the step-by-step analytical approaches which help you to answer this question: "These images look normal to me, but . . . how can I be sure that I am not missing a subtle but important abnormality?"

  • Consult this title on your favorite e-reader, conduct rapid searches, and adjust font sizes for optimal readability.
  • Ensure accuracy in reading and interpretation of any given image. Common sources of error and diagnostic difficulty are highlighted.
  • Prevent mistakes. Pitfalls and associated abnormalities are emphasized throughout.
  • Avoid misdiagnoses. Normal anatomy is outlined alongside schemes for detecting variants of the norm. Each chapter concludes with a summary of key points. Will provide a useful overview of the most important features in diagnosis and interpretation.
  • Easily grasp difficult anatomical concepts. Radiographs accompanied by clear, explanatory line-drawings.
  • Spend less time searching with an improved layout and design with succinct, easy-to-follow text. A templated chapter approach helps you access key information quickly. Each chapter includes key points summary, basic radiographs, normal anatomy, guidance on analyzing the radiographs, common injuries, rare but important injuries, pitfalls, regularly overlooked injuries, examples, and references.
  • Grasp the nuances of key diagnostic details. Updated and expanded information, new radiographs, and new explanatory line drawings reinforce the book’s aim of providing clear, practical advice in diagnosis.
  • Avoid pitfalls in the detection of abnormalities that are most commonly overlooked or misinterpreted.

Table of Contents

Section Title Page Action Price
Front cover cover
Accident & Emergency Radiology i
Copyright page ii
Table of Contents iii
Preface iv
Acknowledgements iv
1 Key principles 1
Introduction 1
Basic radiology 2
The radiographic image 2
Fracture lines: usually black, but sometimes white 3
Fat pads and fluid levels 3
The principle of two views 4
Important information: patient position 5
Assessing the radiographs: discipline is essential 5
Describing injuries 6
Fractures of the long bones 6
Dislocations 9
References 10
2 Particular paediatric points 11
Paediatric Points addressed in other chapters 11
Bones in children are different 12
Child versus adult 12
The end of a long bone in a child 13
Fracture sites 14
Epiphyseal–metaphyseal (Salter–Harris) fractures 14
Metaphyseal–diaphyseal fractures 18
Diaphyseal fractures 20
Toddler’s fracture 22
Sports injuries 24
Stress fractures 24
Avulsion injuries 26
Chondral & osteochondral injuries 28
Chest emergencies 30
Inhaled foreign body 30
Child abuse: skeletal injuries 31
Under- and over-diagnosis of NAI 31
Radiographic features suggestive of NAI 32
Radiographic features highly suggestive of NAI 32
References 34
3 Paediatric skull—suspected NAI 35
The standard radiographs 35
Abbreviations: the sutures 35
Normal anatomy 36
Infants and toddlers—normal accessory sutures 36
The lateral SXR 37
The AP frontal SXR 38
The Towne’s SXR 39
Analysis: suture recognition 40
The principal question: is it a suture or a fracture? 40
Be aware… 40
Assessing the radiographs 40
Suture recognition on the Towne’s view 41
Suture recognition on the lateral view 42
Suture recognition on the AP view 44
References 46
4 Adult skull 47
The standard radiographs 47
Abbreviations 47
Anatomy 48
Normal features on a lateral SXR 48
Towne’s view 48
Analysis: false positive diagnoses 49
difficulties with interpretation 49
Analysis: recognising a fracture 50
Linear fracture 50
Depressed fracture 50
Fluid level in the sphenoid sinus 51
A frequent pitfall 52
Vascular marking versus fracture 52
References 52
5 Face 53
The standard radiographs 53
Regularly overlooked injuries 53
Abbreviations 53
Normal anatomy: midface & orbit 54
Facial bone anatomy 54
Occipitomental (OM) views 55
Normal anatomy: mandible 56
The orthopantomogram (OPG) 56
The temporomandibular joint (TMJ) 56
Straight PA radiograph 57
Analysis: the checklists 58
Midface injury 58
Suspected blow-out fracture 61
Injury to mandible 61
The common injuries 62
Injuries to the midface 62
Orbital blow-out fracture 64
Orbital blow-out fracture—the OM findings 66
Injuries to the mandible 68
Injuries to the nasal bone 70
Pitfalls 71
References 72
6 Shoulder 73
Regularly overlooked injuries 73
The standard radiographs 73
Abbreviations 73
Standard radiographs 74
Normal anatomy 75
AP view 75
Apical oblique view 76
Lateral scapula view—ie the Y view 77
Analysis: the checklists 78
The AP radiograph 78
Apical oblique view 79
The common fractures 80
Greater tuberosity of the humerus 80
Humeral head and/or rim of the glenoid 80
Clavicle 81
The common dislocations 82
Anterior dislocation of the glenohumeral (GH) joint 82
Anterior dislocation of the glenohumeral (GH) joint with accompanying fractures 84
Subluxations and dislocations at the acromioclavicular joint (ACJ) 86
Uncommon but important injuries 88
Posterior dislocation at the glenohumeral (GH) joint 88
Fractures of the proximal humerus 90
Fractures of the body or neck of the scapula 91
Sternoclavicular rupture 91
Inferior dislocation of the humeral head (luxatio erecta) 91
Pitfalls 92
Positioning 92
ACJ assessment 92
Developmental variants that can mislead 92
References 94
7 Paediatric elbow 95
Regularly overlooked injuries 95
The standard radiographs 95
Abbreviations 95
Anatomy 96
AP view—child age 9 or 10 years 96
Lateral view—child age 9 or 10 years 96
Elbow fat pads 97
AP and lateral: the CRITOL sequence 98
Exceptions to the CRITOL sequence? 98
Medial epicondyle—normal anatomy 100
AP and lateral—two anatomical lines 101
Analysis: four questions to answer 102
Question 1—Are the fat pads normal? 102
Question 2—Is the anterior humeral line normal? 103
Question 3—Is the radiocapitellar (RC) line normal? 104
Question 4—Are the ossification centres normal? 105
The common injuries 106
Supracondylar fracture 106
Fracture of the lateral humeral condyle 109
Avulsion of the medial epicondyle 110
Pulled (“nursemaids”) elbow 111
Plastic bowing injury 111
Rare but important injuries 112
Avulsion of the lateral epicondyle 112
Isolated dislocation of the head of the radius 112
Monteggia injury 112
Pitfalls 113
Normal variants that can mislead 113
Puzzled by the appearance of the epicondyles? 114
Misleading lines 114
References 114
8 Adult elbow 115
Regularly overlooked injuries 115
The standard radiographs 115
Abbreviations 115
Normal Anatomy 116
AP view 116
Lateral view 116
Radiocapitellar line 117
Elbow fat pads 117
Analysis: three questions to answer 118
Question 1—Are the fat pads normal on the lateral view? 118
Question 2—Is the cortex of the radial head and neck smooth on both views? 119
Question 3—Is the radiocapitellar (RC) line normal? 120
The common injuries 121
Fracture of the head or neck of the radius 121
Fracture of the olecranon 122
A rare but important injury 123
The Monteggia injury 123
Pitfalls 124
References 124
9 Wrist & distal forearm 125
Regularly overlooked injuries 125
The standard radiographs 125
Abbreviations 125
Normal anatomy 126
PA projection: bones and joints 126
Lateral projection: bones and joints 127
Analysis: the checklists 128
The PA view 128
The lateral view 130
The scaphoid series 132
Wrist myths 135
The common fractures 136
Fractures of the distal radius 136
Fractures of the distal radius in children 140
Fractures of the distal ulna 142
Scaphoid fracture 144
Triquetral fracture 145
Subluxations and dislocations 146
Distal radio-ulnar joint subluxation 146
Scapho-lunate separation 147
Rare but important injuries 148
Fractures of the other carpal bones 148
Subluxations/dislocations of the carpus 148
Normal variants that can mislead 151
Normal radial beak 151
Normal longitudinal ridges 151
Accessory ossicles 152
References 152
10 Hand & fingers 153
The standard radiographs 153
Regularly overlooked injuries 153
Abbreviations 153
Normal anatomy 154
PA and oblique views 154
The thumb 155
The carpometacarpal (CMC) joints 156
The normal CMC joints 157
Analysis: the checklist 158
Adopt a three-step approach 158
The common injuries 160
Fractures of the phalanges or metacarpals 160
Uncommon but important injuries 164
Fractures and dislocations involving the thumb 164
Carpometacarpal (CMC) joint dislocations 167
The 4th and 5th CMC joints on the PA radiograph 168
Pitfalls 169
Mobile basal joint of the thumb 169
Additional bones 169
Accessory epiphyses 170
References 170
11 Cervical spine 171
Regularly overlooked injuries 171
The standard radiographs 171
Abbreviations 171
Normal anatomy 172
Lateral view 172
AP Peg view 173
Long AP view 173
Analysis: the checklists 174
Priority 1: Lateral view checklist 174
Priority 2: AP Peg view checklist 180
Priority 3: Long AP view checklist 184
The common injuries 186
Injuries at C1 186
Injuries at C2 involving the Peg 188
Injuries involving the body or the posterior elements of C2 190
C2 subluxation due to rupture of the transverse ligament 191
Fractures C3–C7 192
Subluxations/dislocations C3–C7 193
Explaining unilateral facet joint dislocation 194
Pitfalls 195
On the AP Peg view 195
On the long AP view 195
Developmental variants 195
Anterior opacity 196
Spasm related—delayed instability 196
Age related changes 197
References 198
12 Thoracic & lumbar spine 199
Regularly overlooked injuries 199
The standard radiographs 199
Abbreviations 199
Normal anatomy 200
Lateral view—thoracic and lumbar vertebrae 200
The three column spine 200
AP view—thoracic vertebrae 201
AP view—lumbar vertebrae 201
Analysis: the checklists 202
On the lateral view 202
On the AP view 204
The common injury 206
Less frequent but important injuries 207
Fractures following trauma 207
Pitfalls 211
The right paraspinal line 211
Dismissing transverse process fractures as trivial 211
Schmorl’s nodes 211
References 212
13 Pelvis 213
Regularly overlooked injuries 213
The standard radiograph 213
Abbreviations 213
Normal anatomy 214
Normal AP view 214
Developing skeleton: Synchondroses 214
Developing skeleton: Pelvic bone apophyses 215
Analysis: the checklist 216
The AP radiograph 216
Common fractures, high energy 218
Fractures involving the main bone ring 218
Acetabular fractures 219
Sacral fractures 220
Common fractures, low energy 222
Simple fall in the elderly 222
Injury to the coccyx 222
Apophyseal avulsion in the young 222
Sports injuries: specific avulsions 224
Pitfalls 225
References 226
14 Hip & proximal femur 227
Regularly overlooked injuries 227
The standard radiographs 227
Abbreviations 227
Normal anatomy 228
AP view 228
Lateral view 228
AP and lateral views 229
Secondary centres (apophyses) 229
Analysis: the checklists 230
The common injuries 232
Elderly patient after a simple fall 232
Adolescent patient with acute hip pain 236
Uncommon but important injuries 238
Acetabular fracture 238
Dislocations 239
Pitfall 242
References 242
15 Knee 243
The standard radiographs 243
Regularly overlooked injuries 243
Abbreviations 243
Normal anatomy 244
AP view 244
Lateral view 245
Analysis: the checklists 246
The AP radiograph 246
The lateral radiograph 248
The common fractures 250
Tibial plateau fracture 250
Tibial plateau fracture—the four features to look for 252
Fracture through the body of the patella 254
Osteochondral fracture: articular surface of the patella 255
Neck of fibula fracture 256
Osteochondritis dissecans of the knee 257
Supracondylar and intracondylar fractures of the femur 257
Fracture/avulsion of the tibial spine 257
Small fragments around the knee 258
Cruciate ligament injury 258
Cruciate ligament or meniscus injury—Segond fracture 259
A common dislocation 260
Patella dislocation 260
Infrequent but important injuries 260
Pitfalls 262
References 264
16 Ankle & hindfoot 265
Regularly overlooked injuries 265
The standard radiographs 265
Abbreviations 265
Normal anatomy 266
Lateral view—bones and joints 266
Lateral view—ligaments 267
AP mortice 268
Axial projection—calcaneum 269
Analysis: the checklists 270
AP mortice 270
Lateral view 272
Axial view 273
Common fractures/torn ligaments 274
The malleoli 274
Base of the 5th metatarsal 276
The calcaneum 277
Several types of calcaneal fracture 278
Growth plate (Salter–Harris) fractures 280
Ligamentous injuries 281
Torn medial or lateral ligaments 281
Tear of the interosseous membrane 281
Infrequent but important injuries 282
Fractures of the talus 282
Maisonneuve fracture 284
Distal tibial fractures involving the articular surface 285
Complex Salter–Harris fractures 286
Infrequent calcaneal fractures 288
Os trigonum fracture 288
Talar dislocations—Infrequent but important 289
Pitfalls 290
Calcaneum: the apophysis 290
Calcaneum: the anterior process 291
Normal accessory ossicles 291
References 292
17 Midfoot & forefoot 293
Regularly overlooked injuries 293
The standard radiographs 293
Abbreviations 293
Normal anatomy 294
AP view 294
Oblique view 294
The cuneiform mortice and the Lisfranc joints 295
Analysis: the checklists 296
The AP radiograph 296
The oblique radiograph 296
The lateral radiograph 297
The common fractures 298
Metatarsals and phalanges 298
Base of the 5th metatarsal 298
Fatigue (march/stress) fractures 299
Infrequent but important fractures 300
Tarsal bone fractures 300
Base of the second, 3rd, or 4th metatarsal 300
Jones fracture 301
Dislocations/subluxations 302
Injury to the tarsometatarsal joints 302
Pitfalls 304
Sesamoids and accessory ossicles 304
Apophysis 305
Epiphyseal clefts 305
An unrelated abnormality can cause distraction 306
An error/pitfall that needs repeated emphasis… 306
References 306
18 Chest 307
The chest X-ray (CXR) 307
The standard radiographs 307
Abbreviations 307
Normal anatomy 308
Frontal CXR—the lungs 308
Frontal CXR—lung markings 308
Frontal CXR—hila 309
Frontal CXR—cardiothoracic ratio 309
Lateral CXR—the lobes of the lung 310
Lateral CXR—skeletal shadows 311
Lateral CXR—three normal appearances 311
Analysis: the checklists 312
The frontal CXR 312
The lateral CXR 314
Ten clinical problems 316
Question 1: Is there pneumonia (consolidation)? 316
Question 2: Is there a pneumothorax? 319
Question 3: Are there signs of left ventricular failure (LVF)? 321
Question 4: Severe asthmatic attack—is there a complication? 323
Question 5: Is there a pleural effusion? 324
Question 6: (a) Is there an aortic dissection? (b) Is there a traumatic rupture of the aorta? 326
Question 7: Is there a rib fracture? 327
Question 8: Is there a cause for non-specific chest pain? 327
Question 9: Is there evidence of a pulmonary embolus? 327
Question 10: Is there evidence of an inhaled foreign body? 328
References 328
19 Abdominal pain & abdominal trauma 329
Appropriate imaging 329
Abbreviations 329
The AXR—its usefulness 330
Analysis: plain film checklists 332
Erect CXR 332
Supine AXR 333
The common problems 334
Non-specific abdominal pain 334
Suspected perforation 335
Suspected intestinal obstruction 336
Suspected constipation 337
Suspected renal colic 338
Suspected acute biliary disease 340
Suspected abdominal aortic aneurysm/rupture 340
Suspected foreign body ingestion 340
Infrequent but important problems 341
Blunt trauma to the abdomen 341
Penetrating injury to the abdomen 341
References 342
20 Penetrating foreign bodies 343
The standard radiographs 343
Alternative imaging to consider 343
Regularly overlooked foreign bodies 343
Abbreviations 343
Appearances on plain radiographs 344
Glass 344
Metal 344
Wood or plastic 344
Suspected foreign bodies 346
Soft tissue laceration 346
Orbital injury 347
References 348
21 Swallowed foreign bodies 349
Dangerous injuries 349
Useful tools 349
Abbreviations 349
The most common foreign bodies 350
Children: coins 350
Adults: fish bones 352
Infrequent but important FBs 356
Sharp objects other than fish bones 356
Button batteries 358
Magnets 359
Large objects—dentures 360
Hard plastic clips 361
Bezoars 361
References 362
22 Test yourself 363
23 Glossary 373
Further reading 376
Index 377
Test Yourself—answers 380