Radiotriquetral arthrodesis for rheumatoid wrist with flexor tendon rupture: A case report.

Flexor tendon rupture in the wrist of patients with rheumatoid arthritis is a rare complication, and there is no standard treatment for the wrist joint. Here, we present the case of a rupture of the flexor digitorum profundus of the left index finger owing to a rheumatoid wrist. Plain radiography and computed tomography showed carpal collapse, especially lunate, and arthrosis between the capitate and lunate. For stability and mobility of the wrist and index finger, resection of the lunate and radiotriquetral (RT) arthrodesis using the distal ulna as a bone graft and arthrodesis of the distal interphalangeal joint of the index finger were performed. At 2 years postoperatively, her wrist was painless and stable on radiography without recurrence of tendon rupture, and the arc of motion of the dorsal-palmar flexion of the wrist joint was 125°. RT arthrodesis could be a surgical choice of "mobile" partial wrist arthrodesis.