Pisiform bone

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Pisiform Bone

The Pisiform bone (pronounced: pie-si-form bone) is a small, pea-shaped bone found in the human wrist. It is considered a sesamoid bone, meaning it is embedded within a tendon or muscle, specifically the flexor carpi ulnaris.

Etymology

The term "Pisiform" is derived from the Latin word "pisum," which means "pea," and the suffix "-form," which is derived from the Latin word "forma," meaning "shape." Thus, the term "Pisiform" literally translates to "pea-shaped."

Anatomy

The Pisiform bone is located on the ulnar side of the wrist and articulates with the anterior surface of the triquetral bone. It is unique among the carpal bones as it is not directly involved in the wrist joint and only makes contact with a single other bone.

Function

The primary function of the Pisiform bone is to provide a bony support for the tendon of the flexor carpi ulnaris muscle. It also serves as a site for the attachment of several ligaments, including the pisohamate and pisometacarpal ligaments.

Related Terms

External links

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