Figure 1. Proximal interphalangeal dislocation. (a) The anteroposterior radiograph of the hand poorly demonstrates the grossly deformed joint due to a combination of the projection and the wrong centring point. (b) The lateral clearly shows the abnormality.
Figure 2. Fracture types. (a) Traumatic ankle fracture with clearly defined fracture margins. (b) Pathological fracture with the moth-eaten margins. (c) Stress fracture of the third metatarsal with chronic periosteal reaction.
Figure 3. Trimalleolar fracture of the ankle. This shows the typical Weber B pattern associated with an eversion injury with a transverse fracture medial malleolus, and an oblique fracture of the lateral malleolus and large avulsion of the posteriolateral portion of the tibia. The talus is still rotated secondary to the initial injury.
Figure 4. Segond fracture. (a) The anteroposterior radiograph shows the small avulsion fragment of the joint capsule from the proximal tibia. (b) This a close up view of the above injury. (c) The lateral demonstrates the avulsion of the tibial anterior cruciate ligament origin.
Figure 5. Volar Barton's fracture. There is an intra-articular fracture of the distal radius with the displaced volar fragment taking the carpus with it.
Figure 7. Carpometacarpal fracture-dislocation. (a) There is loss of the normal carpometacarpal alignment on the plain radiograph with bony fragmentation at the trapezoid–capitate joint. CT clearly demonstrates the full extent of the injury with the splitting of the hamate (b) and diastasis of the trapezoid-capitate joint (c). Multiplanar reconstructions (not shown) confirmed dislocation of the ring and little fingers.
Figure 8. Calcaneal stress fracture. (a) The plain radiograph demonstrates marked osteopenia. (b) The bone scintagram shows intense activity in both calacanei consistent with stress fractures.
Figure 9. Impacted fractured neck of femur. (a) The anteroposterior radiograph is inconclusive due to degenerate change and marginal osteophytosis. (b) The coronal T1 weighted sequence clearly demonstrates disruption of the trabeculae in the subcapital region.
Figure 10. Posterior dislocation of the shoulder. (a) On the anteroposterior radiograph close inspection shows that the articular surfaces are no longer congruous with the "empty glenoid sign". (b) The axial view confirms the posterior position of the humeral head.
Figure 11. Avulsion of the medial epicondyle. The anteroposterior radiograph demonstrates displacement of the medial epicondyle into the joint (arrow). There is also fracture of the radial head.
Figure 13. Scapholunate dissociation with dorsal intercalated segmental instability (DISI). (a) The anteroposterior radiograph shows widening of the scapholunate interspace (Terry Thomas sign). (b) The lateral shows dorsal tilt of the lunate relative to the scaphoid consistent with a DISI deformity.
Figure 14. Midcarpal dislocation. (a) On the anteroposterior radiograph the lunate has lost its normal shape and now looks like a pie slice. (b) On the lateral the lunate maintains its alignment with the radius but has started to tip in a volar manner.
Figure 15. Schatzker 3 tibial plateau fracture. (a) The lateral shows a lipohaemarthrosis and the depressed tibial plateau. (b) The anteroposterior radiograph confirms the depressed lateral tibial plateau.
Figure 16. Maisonneuve fracture. (a) The anteroposterior ankle radiograph shows widening of the medial joint space and widening of the distal tibiofibular syndesmosis. (b) The proximal fibula view confirms an oblique fracture of this bone.
Figure 17. Septic Lisfranc fracture dislocation. (a) The dorsi plantar oblique radiograph shows lysis and periosteal reaction centred around the base of the second metatarsal. (b) The lateral clearly shows the dislocation.
Figure 18. Cuboid fracture. (a) The plain radiograph shows a sclerotic line across the cuboid. (b) CT confirmed that this was a relatively undisplaced fracture.
