Luxation trans-scapho-lunaire associée à une fracture-luxation verticale de pyramidal: un cas très rare

We report the case of a 21-year-old man who injured his right hand in a fall from his motorbike, causing a trans-scaphoid perilunate fracture-dislocation associated with vertical fracture of the pyramid (A and B). On day 2, patient underwent a bloody reduction (C) of disorganized carpal bones with osteosynthesis of scaphoid and pyramid (D). Peri-lunate fracture-dislocation is a rare injury constituting 5% to 10% of all wrist traumas. It is often underdiagnosed and requires an injury to the palmar ligament due to hyperflexion; the association with a fracture-dislocation of the pyramid is even more rare. Peri-lunate dislocations of the carpus can cause severe functional consequences if they are not diagnosed shortly after the injury. The diagnosis is very easy and a simple radiological examination allows the diagnosis.