Pisiform
Os pisiforme
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- What it is
- Pea-shaped sesamoid bone lying on the palmar face of the triquetrum within the flexor carpi ulnaris tendon.
- Function
- Proximal-row carpal: adapts its position as the wrist bends so the hand moves smoothly on the forearm.
- Size
- ≈ 8 × 9 × 8 mm
- Clinical note
- Palpable at the base of the hypothenar eminence.