An Unusual Presentation of Isolated Pisiform Dislocation: A Case Report of Dorsal and Ulnar Displacement

Isolated pisiform dislocations are a rarely reported injury. They are typically due to blunt trauma, causing pain and paresthesias in the ulnar side of the wrist. Management options for these injuries are primarily discussed in a limited number of case reports and include closed reduction, open reduction, and pisiformectomy. Of these case reports, the dislocations are described with volar displacement. We present the case of an isolated pisiform dislocation with ulnar and dorsal displacement. This case was managed with closed reduction in the operating room and Guyon's canal decompression, as well as carpal tunnel release, given ulnar and median nerve paresthesias associated with the injury.