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Information About

Pisiform Bone




The Pisiform Bone (also called pisiform or '''pisiforme os''' or '''lentiform bone''') is a small knobbly, pea-shaped Wrist bone.

The Pisiform Bone is found in the proximal row of the Carpus . It is located where the Ulna (inner bone of the forearm) joins the Carpus (wrist). It articulates only with the Triquetral .

It is a Sesamoid Bone .


OVERVIEW OF ANATOMY

The pisiform bone 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 carpal bones and is spheroidal in form.

Its ''dorsal surface'' presents a smooth, oval facet, for articulation with the triangular: this facet approaches the superior, but not the inferior border of the bone.

The ''volar surface'' is rounded and rough, and gives attachment to the Transverse Carpal Ligament , and to the Flexor Carpi Ulnaris and Abductor Digiti Quinti .

The ''lateral'' and ''medial surfaces'' are also rough, the former being concave, the latter usually convex.


Articulation

The pisiform articulates with ''one'' bone, the triangular.


SEE ALSO



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