Carpometacarpal joint dislocation (5th)
Punched a wall. Now pain and deformity.
Right hand radiographs
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5th carpometacarpal dislocation with metacarpal volar angulation and small fracture of the medial aspect of the proximal epiphysis. Increased local soft tissue oedema. The reminder bones are unremarkable.
This type of dislocation, although uncommon, has a strong young male prevalence due to its usual mechanism: punching hard structures. As shown in this case, a base of metacarpal fracture is a common association with this injury.