Which physical findings are characteristic of stenosing tenosynovitis in patients with ulnar-sided wrist pain?

Updated: Apr 26, 2021
  • Author: David M Lichtman, MD; Chief Editor: Harris Gellman, MD  more...
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The ECU can be palpated in its groove adjacent to the ulnar styloid. It becomes prominent when the wrist is supinated and ulnarly deviated. Recurrent painful subluxation can be detected by a palpable snap when the forearm is actively supinated with the wrist flexed and ulnarly deviated. When stenosing tenosynovitis is present, the tendon is tender to palpation and swollen. Occasionally, crepitus may be noted within the swollen ECU subsheath. The patient's symptoms are reproduced with resistance to dorsiflexion and ulnar deviation.

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