Figure 1

Wrist full extension and intra-articular unstable fracture model. Polymethyl methacrylate was mounted on the metacarpal bones of each specimen to simulate axial loading of the distal radius across the intact wrist joint at full wrist extension (A). A standardized 3-part intra-articular and severe comminuted fracture was simulated by making a 1-cm transverse gap at a position 2-cm proximal to the articular surface of the lunate fossa, and a second sagital split osteotomy was performed between the scaphoid and lunate fossa (B).