Extensor carpi ulnaris tendinopathy
Extensor carpi ulnaris tendinitis

In the case of this tendinopathy, the tendon of the muscle called the 'extensor carpi ulnaris' is affected. Often the tendon is inflamed through overuse. The symptoms are located on the top of the wrist, at the base of the little finger.

arm ulna extensor carpi ulnaris tendinitis tendinopathy

The tendon of the extensor carpi ulnaris runs along a bony nodule (the ulnar styloid process) located on the top of the wrist. This is the site where the pain is generally felt.

Description of the condition

Cause and origin

The symptoms usually occur gradually as a result of overuse. Extensor carpi ulnaris tendinopathy is common in tennis players (racket sport players), baseball players, golfers and rowers.

Signs & symptoms

  • Pain on the top and pinky-side of the wrist.
  • Swelling (of the tendon) sometimes occurs.
  • Pain when extending the wrist against resistance, particularly if the wrist is simultaneously bent towards the little finger (ulnar deviation).
  • The tendon may be sensitive if pressed on.




You can check your symptoms using the online physiotherapy check or make an appointment with a physiotherapy practice in your area.

Gerritsen, B.J. & Heerkens, Y.F. (2004). Anatomie in vivo van het bewegingsapparaat. Maarsen: Elsevier gezondheidszorg.
Montalvan, B., Parier, J ., Brasseur, J.L., Le Viet, D. & Drape, J.L. (2006). Extensor carpi ulnaris injuries in tennis players: a study of 28 cases. Br J Sports Med 2006;40:424–429.
Parmelee-Peters, K., Eathorne, S.W. (2005). The wrist: common injuries and management. Prim Care. 2005 Mar;32(1):35-70.
Schünke, M., Schulte, E. & Schumacher, U. (2005). Prometheus. Algemene anatomie en bewegingsapparaat. Houten: Bohn Stafleu Van Loghum.

arm ulna extensor carpi ulnaris tendinitis tendinopathy

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