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Medical Term:

pisiform (bone)


a small bone the size and shape of a pea, in the proximal row of the carpus, lying on the anterior surface of the triquetral, with which it articulates; it gives insertion to the tendon of the flexor carpi ulnaris muscle. Realistically, it is considered a sesamoid bone within the continuous flexor carpi ulnaris tendon and pisohamate ligament. It is unrepresented in the primitive carpalia.

Synonym(s): os pisiformeTA, lentiform bone

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.