Where does hand tenosynovitis occur in rheumatoid arthritis (RA)?

Updated: Jun 11, 2021
  • Author: Michael Neumeister, MD, FRCSC, FACS; Chief Editor: Joseph A Molnar, MD, PhD, FACS  more...
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Tendon sheaths are lined by paratenon and synovium; therefore, the tendons are affected by the same disease process as joints. In fact, symptoms of tenosynovitis may occur before those of intra-articular disease. The affected sites are (1) the dorsal and volar aspects of the wrist, because the tendons are covered by synovium as they pass under the flexor and extensor retinaculum and under the wrist, and (2) the volar aspect of the digits, because the tendons are covered by synovium in the fibro-osseous canals in the finger. [4] Synovitis of the tendons can cause pain, dysfunction, and eventual rupture of tendons.

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