Daily question. A little more on the wrist

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Scott Rand

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Apr 13, 2026, 5:30:45 AMApr 13

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A day after being struck with a pitched ball on the ulnar aspect of the left wrist and hand, a professional baseball player develops “pins and needles” in the small and ulnar half of his ring fingers. He finds it extremely difficult to grab the bat to participate in batting practice. After x-rays demonstrate no acute abnormalities of the left wrist and hand, he is diagnosed with Guyon’s canal syndrome. What two bones form Guyon’s canal?

A. Pisiform and Triquetrum

B. Pisiform and Hamate

C. Hamate and Lunate

D. Triquetrum and Lunate

Scott E Rand, MD FAAFP CAQSM

Director, Primary Care Sports Medicine Fellowship

Co Director of Sports Medicine, Houston Methodist Orthopedics and Sports Medicine Willowbrook

Assistant Professor of Clinical Family Medicine Houston Methodist Academic Institute

Adjunct Assistant Professor of Family and Community Medicine, Texas A&M University

Assistant Professor of Family Medicine in Clinical Medicine Weill Cornell Medical College.

13802 Centerfield Dr Suite 300

Houston, TX 77070

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