Houston Methodist. Leading Medicine

Wrist FAQ

Question:

I've been having wrist pain for weeks now. The doctor did an X-ray and said I have arthritis of the pisiform bone in the wrist. How is it possible to have arthritis of one tiny bone?

Answer:

The pisiform bone is located in the wrist on the side of the little finger. It has one joint that moves against the slightly larger triquetrum bone. Degenerative arthritis of this joint is really not uncommon because it gets a lot of use.

When the wrist bends, the pisiform flexes. When the wrist extends, the pisiform also extends and moves slightly toward the thumb side. With normal motion, multiple forces act on the pisiform-triquetrum joint. Forceful or repetitive use of this joint is the main reason for arthritic changes.

Acute injury from trauma with tendon rupture is the second most common reason for arthritis in this joint. Tight ligaments and tight fibrous bands of tissue across the pisiform can also create compression and eventual problems.

Claudia Lamas Gómez, MD, PhD et al. Dysfunction of the Pisotriquetral Joint: Degenerative Arthritis Treated by Excision of the Pisiform. In Orthopedics. April 2005. Vol. 28. No. 4. Pp. 405-408.

*Disclaimer:* The information contained herein is compiled from a variety of sources. It may not be complete or timely. It does not cover all diseases, physical conditions, ailments or treatments. The information should NOT be used in place of visit with your healthcare provider, nor should you disregard the advice of your health care provider because of any information you read in this topic.
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