CASE REPORT

Carpal tunnel syndrome caused by volar dislocation of the lunate in a patient with rheumatoid arthritis

Authors

Yoshinobu Oka¹, Daisaku Tokunaga¹, Hiroyoshi Fujiwara¹, Tatsuya Hojo¹, Ryota Takatori¹ and Toshikazu Kubo¹

Received:

April 19, 2006

Accepted:

August 18, 2006

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Abstract

We report a case of carpal tunnel syndrome caused by volar dislocation of the lunate in a patient with rheumatoid arthritis. A 74-year-old woman complained of numbness in her fingers. Carpal tunnel syndrome was diagnosed, and carpal tunnel release was performed. However, the symptoms recurred. Three-dimensional computed tomography and magnetic resonance imaging revealed volar dislocation of the lunate and synovitis around the distal radioulnar joint, respectively. Resection of the lunate and the Sauvé-Kapandji procedure were effective.

Key words

Carpal instability, Carpal tunnel syndrome, Lunate, Rheumatoid arthritis, Volar dislocation