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Scaphocapitate Syndrome With Associated Trans-Scaphoid, Trans-Hamate Perilunate Dislocation

Background: Perilunate fracture dislocations are often associated with fractures of the distal pole of the scaphoid or the proximal pole of the capitate. However, the combination of perilunate dislocation with multiple carpal fractures and associated scaphocapitate syndrome is very rare. Methods: We report a unique case of scaphocapitate fracture syndrome with perilunate dislocation and fracture of the hamate resulting from a high-energy injury to the wrist during a dirt-bike competition. Results: Open reduction and internal fixation of the scaphoid fracture with a 3.0-mm headless screw, the head of the capitate with a 1.5-mm lag screw, and the hamate fracture with a 1.3-mm lag screw was performed. The lunotriquetral dissociation was reduced, with the ligament repaired and the joint stabilized using a Kirschner wire. All screw heads are carefully buried under the articulate cartilage. Conclusions: Prompt anatomic reduction and stable osteosynthesis of all fractures in this patient resulted in successful healing and return to activity.