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The pisiform may be known by its small size and by its presenting a single articular facet. It is situated on a plane anterior to the other bones of the carpus; it is spheroidal in form, with its long diameter directed vertically. Shown is the left pisiform, showing posterior and lateral surfaces.

Pisiform Bone

The pisiform may be known by its small size and by its presenting a single articular facet. It is situated…