Case Reports
Dorsoulnar Wrist Ganglion Associated With an Os Ulnostyloideum: A Case Report
Am J Orthop. 2007 June;36(6):E94-E96
Author and Disclosure Information
Obi U. Osuji, MD, and Timothy R. McAdams, MD
Dr. Osuji is Resident, Orthopaedic Surgery, Howard University, Washington, D.C.
Dr. McAdams is Assistant Professor, Department of Orthopaedic Surgery, Stanford University Hospital, Palo Alto, California.
Abstract not available. Introduction provided instead.
True accessory ossifications of the ulnar wrist, unrelated to prior trauma, are uncommon.1 In a study of 800 asymptomatic wrists, Biyani and colleagues2 found only 2 cases of an accessory os styloideum, or “os ulnostyloideum.” Accessory ossicles in the immediate area surrounding the distal ulna and its styloid process have been implicated in primary chronic polyarthritis and inflammation.1,3
Wrist ganglions are typically found on the dorsal or volar aspect of the wrist. Ulnar-sided dorsal ganglions are less common and, when present, usually arise from the scapholunate joint and spread ulnarly. To our knowledge, ulnar-sided ganglion cysts have not been described in relation to accessory ossifications of the ulnar styloid.