Pisiform (left) (Os pisiforme)
Educational content only — not medical advice.
Anatomy
A small pea-shaped carpal seated in front of the triquetral inside the flexor carpi ulnaris tendon — a sesamoid that improves the muscle's leverage and shields the nearby ulnar nerve in Guyon canal. This is the left member of the pair.
Clinical notes
Pain at the palmar wrist base after leaning on the hand strikes pisiform and ulnar nerve together; its fracture hurts especially on forceful grip.
Related structures
Educational references
FAQ
What is the role of the Pisiform (left)?
A small pea-shaped carpal seated in front of the triquetral inside the flexor carpi ulnaris tendon — a sesamoid that improves the muscle's leverage and shields the nearby ulnar nerve in Guyon canal. This is the left member of the pair.
Why is the Pisiform (left) clinically important?
Pain at the palmar wrist base after leaning on the hand strikes pisiform and ulnar nerve together; its fracture hurts especially on forceful grip.
Source & license
Derived from Z-Anatomy (Gauthier Kervyn et al.), CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/); upstream geometry from BodyParts3D, © The Database Center for Life Science. license details