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Is a Subset of Wrist Ganglia the Sequela of Internal Derangements of the Wrist Joint? MR Imaging Findings¹

¹ From the Department of Diagnostic Radiology, Faculty of Medicine, Alexandria University, Egypt (K.I.E.N., A.A.F.); and the Departments of Radiology (K.I.E.N., M.E.S., R.B., A.M.) and Orthopedic Surgery (R.W.C., L.A.O.), Thomas Jefferson University Hospital, Jefferson Medical College, 132 S 10th St, 1096 Main Bldg, Philadelphia, PA 19107. Received March 6, 1998; revision requested April 14; final revision received October 13; accepted March 16, 1999. Address reprint requests to M.E.S. (e-mail: mark.schweitzer@mail.tju.edu).

PURPOSE: To determine if there is an association between wrist ganglia and internal derangements of the wrist joint by reviewing magnetic resonance (MR) images.

MATERIALS AND METHODS: Two observers retrospectively reviewed MR images of the wrist obtained in 625 patients at 1.5 T for the presence of ganglia and associated triangular fibrocartilage complex, scapholunate ligamentous, or lunotriquetral ligamentous tears that were within 3 mm of the ganglion. When available, surgery and/or pathology records were reviewed.

RESULTS: There were 122 ganglia and 37 internal derangements. Of the 22 ulnar-sided ganglia, 10 (45%) demonstrated associated triangular fibrocartilage complex tears. Of the 97 radial-sided ganglia, 27 (28%) demonstrated ligamentous tears related to the site of the ganglion. The radial-sided tears involved the radial aspect of the triangular fibrocartilage complex in 12 ganglia; the scapholunate ligament, in isolation, in eight ganglia; and both the triangular fibrocartilage complex and the scapholunate ligament in six ganglia. Only one of the ganglia demonstrated an associated lunotriquetral ligamentous tear. Surgical findings confirmed the ligamentous tears in 25 patients.

CONCLUSION: Wrist ganglia are associated, not infrequently, with internal derangements of the wrist.

Index terms: Ganglion, 434.361 • Wrist, abnormalities, 434.361, 434.483 • Wrist, injuries, 434.419, 434.483 • Wrist, MR, 434.121411, 434.121412, 434.121415, 434.12143

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