Pisiform Fractures



Pisiform Fractures


Mikael Starecki

James R. Mullen



INTRODUCTION



  • Anatomy



    • The pisiform is a pea-shaped sesamoid bone within the tendon of the flexor carpi ulnaris (FCU).


    • Attaches to FCU proximally


    • Distally is attached to the pisohamate, pisometacarpal, and pisotriquetral ligaments


    • Origin of abductor digiti minimi


    • Transverse carpal ligament also has attachments to the pisiform.


    • The ulnar nerve and artery lie radial to the pisiform in Guyon’s canal.


  • Mechanism of injury



    • Direct impact against a hard surface


    • Forceful contraction of FCU


  • Epidemiology



    • 1% to 2% of all carpal fractures


    • Injury is often missed


    • 50% occur in isolation


    • 50% associated with other conditions


EVALUATION

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May 7, 2019 | Posted by in ORTHOPEDIC | Comments Off on Pisiform Fractures

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