American Journal of Roentgenology, Vol 171, 763-768, Copyright © 1998 by American Roentgen Ray Society

ARTICLES

Tear of the posterior shoulder stabilizers after posterior dislocation: MR imaging and MR arthrographic findings with arthroscopic correlation

GA Hottya, PF Tirman, FW Bost, WH Montgomery, EM Wolf and HK Genant
Department of Radiology, University of California, San Francisco 94117- 1349, USA.

OBJECTIVE: The purpose of this article is to describe the findings on MR imaging and MR arthrography in posterior capsular tear and teres minor muscle injury after posterior dislocation. We also correlate MR imaging with the arthroscopic findings and present treatment options for these patients. CONCLUSION: MR imaging is helpful in diagnosing abnormalities caused by posterior dislocation injuries and in directing therapy. Teres minor muscle and capsular injuries may occur without the typical reverse Bankart lesion. Isolated teres minor muscle tears seen on MR imaging after posterior dislocation injury may cause pain. However, no consensus exists as to whether the lesions seen on MR images in these patients should be treated surgically or conservatively.
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