Orthonotes
Orthonotes
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Pisiform Fractures

The pisiform is a sesamoid bone located within the flexor carpi ulnaris (FCU) tendon on the medial side of the wrist, articulating with the triquetrum at the pisiotriquetral joint. Pisiform fractures are uncommon injuries, typically caused by a direct blow to the hypothenar eminence or a fall onto the outstretched hand. They account for less than 2% of all carpal fractures and are frequently missed on standard PA and lateral wrist radiographs, requiring a carpal tunnel view or a supinated obliqu...