[Scapho-capitate fracture. Apropos of a case, review of the literature].

Scapho-capitate fracture is a rare lesion. Its mechanism is controversial. Forced extension seems to be the most frequent etiology, as this movement of the wrist induces scaphoid fracture by compression. Hyperextension of the wrist, as a result of the scaphoid lesion, allows contact between the posterior margin of the radius and the neck of the capitatum, inducing capitatum fracture. Continuation of the movement allows a two-stroke rotation of the capitate proximal pole. Analysis of a personal case and review of the literature demonstrated: the frequency of extension movement for etiology, delayed diagnosis, and the need for surgery. Surgery should be performed early with capitate reduction and osteosynthesis in case of instability, scaphoid reduction and minimal osteosynthesis a graft may be necessary. Immobilisation of the carpus and the thumb is essential until bone consolidation. Early surgery should avoid complications such as necrosis or pseudarthrosis.