Bifocal dislocation of the forearm: elbow and perilunate dislocation

We report a case of bifocal dislocation of the forearm due to posterior dislocation of the elbow and transcaphocapital retrolunate dislocation of the carpus, Fenton's syndrome, associated with fracture of both bones of the forearm. The emergency procedure achieved reduction of the elbow, plate fixation of the radius and ulna, used a posterior and an anterior access to achieve reduction and osteosynthesis of the radial styloid, the scaphoid, and the capitatum and temporary schapholunate, triquetrolunate, scaphocapitate, and radiolunate pinning. At ten months, the patient only complained of moderate pain for exceptional efforts. Complete amplitude elbow motion was restored. Wrist flexion and extension were 50 degrees and 30 degrees respectively. X-rays demonstrated union of the scaphoid and the capitatum. There was no scapholunate diastasis and the scapholunate angle was normal.