VOLAR DISLOCATION OF THE LUNATE CAUSING MULTIPLE FLEXOR TENDON RUPTURES An unusual manifestation of pyrophosphate arthropathy

A ciase of volar dislocation of the lunate, associated with multiple rupture of the flexor tendons of the fingers, is described in a 76-year-old man with calcium pyrophosphate arthropathy. Journal of Hand Surgery (British and European Volume, 1994) 19B: 195-196 Calcium pyrophosphate dihydrate (CPPD) crystal deposition disease (pseudogout) causes a symmetrical generalized arthropathy which mainly affects the knees, wrists, hands and shoulders. This disorder is known to be associated with the use of long-term steroid therapy (Dieppe and Calvert, 1983). We describe an unusual case of pyrophosphate arthropathy of the wrist causing volar dislocation of the lunate and volar subluxation of the proximal scaphoid, which resulted in the rupture of finger flexor tendons