FESSH prep Wrist trauma Carpal bone anatomy and fracture
Pisiform bone
Regarding the pisiform bone and its pathology, which of the following statements are true?
1.The pisiform is a sesamoid bone embedded in the distal flexor carpi ulnaris tendon and articulates only with the triquetrum.
2.Isolated pisiform fractures account for approximately 0.2–2% of all carpal fractures.
3.Pisiform fractures are typically managed with internal fixation because of the bone's weight-bearing role in the carpus.
4.Pisotriquetral osteoarthritis may develop after pisiform fracture, chronic instability of the pisiform stabilising ligaments, or repetitive trauma in racquet sports.
5.The ulnar nerve and ulnar artery lie in Guyon's canal immediately radial to the pisiform and must be identified and protected during pisiformectomy.
FESSH marking: +1 per correct statement, 0 for blank, −1 for incorrect. Click the same TRUE/FALSE button twice to clear it.