Four weeks later, when the fracture healed (Fig. 2), the cast was removed, but the patient mentioned a persisting trouble at wrist motion.

One week later, she consulted again as the disorders persisted. The clinical exam mentioned pseudo-blockings with wrist snap, a peri-lunate sensitiveness and a doubtful aspect of extension of the lunate on the profile radiography, evoking a possible intracarpal ligament injury. On the one hand, the arthroscanner pointed out an injury of the triangular fibro cartilage complex (TFCC) with a passageway of the contrast fluid into the distal radioulnar joint and on the other hand, an important widening of the scapholunate space, without passage of the contrast fluid (Fig. 3).

Arthroscopy confirmed a rupture of the TFCC (Fig. 4), sutured in the same time (Fig. 5), but also an important scapholunate laxity (Fig. 6) which was immediately pinned with K wires (Fig. 7).