Pisiform bone
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The pisiform bone, also spelled pisiforme, is a small knobbly, sesamoid bone that is found in the wrist. It forms the ulnar border of the carpal tunnel.
The right pisiform. A, anterior aspect. — B, posterior aspect. — C, lateral aspect. (After Charpy.)
Pisiform bone.
Carpal bones
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The carpal bones are the eight small bones that make up the wrist that connects the hand to the forearm. The terms "carpus" and "carpal" are derived from the Latin carpus and the Greek καρπός, meaning
Pisiform bone
…in the wrist. It forms the ulnar border of the carpal tunnel. The pisiform is a sesamoid bone, with no covering membrane of periosteum. It is the last carpal bone to ossify. The pisiform bone is a small bone found in the proximal row of the wrist (carpus). It is situated where the ulna joins the wrist, within the…
Labelled image showing the eight carpal bones.
Xray hand with color
Location of the accessory ossicles of the carpals