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Published online before print May 17, 2002, 10.1148/radiol.2241011128
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(Radiology 2002;224:105-111.)
© RSNA, 2002

Musculoskeletal Imaging

MR Arthrography of Shoulders after Suture-Anchor Bankart Repair1

Hideharu Sugimoto, MD, Kazuhide Suzuki, MD, Ken-ichi Mihara, MD, Hayato Kubota, MD and Hiroaki Tsutsui, MD

1 From the Department of Radiology, Showa University Fujigaoka Hospital, 1-30 Fujigaoka, Aoba-ku, Yokohama, Kanagawa-ken 227-8501, Japan (H.S., H.K.); and the Department of Orthopedics, Showa University Fujigaoka Rehabilitation Hospital, Japan (K.S., K.M., H.T.). Received June 28, 2001; revision requested August 16; revision received November 15; accepted January 7, 2002. Address correspondence to H.S. (e-mail: sugimo-h@sannet.ne.jp).

PURPOSE: To determine the ability of magnetic resonance (MR) arthrography to depict the anatomic reestablishment of the capsulolabral complex after suture-anchor Bankart repair.

MATERIALS AND METHODS: Thirty patients (25 men, five women; mean age, 28 years) who had undergone suture-anchor Bankart repair of one shoulder underwent MR arthrography before second-look arthroscopy. Ninety-eight anchors were used for the sutures. MR arthrographic diagnosis of anatomic reestablishment of the capsulolabral complex was correlated with arthroscopic findings. Contingency table analysis was performed to determine the relationship between MR arthrographic findings and arthroscopic findings.

RESULTS: MR findings of reattachment of the capsulolabral complex were in agreement with arthroscopic findings in 93 anchor points (accuracy, 93 of 98 anchor points; 95%). In 28 shoulders, oblique transverse images obtained with the shoulder in the abduction and external rotation position showed that the anterior band of the inferior glenohumeral ligament (AIGHL) abutted the humeral head and that reattachment of the AIGHL to the glenoid rim was seamless. Arthroscopy revealed satisfactory reestablishment of the capsulolabral complex in these shoulders. In the remaining two shoulders, a pool of contrast material was seen between the AIGHL and humeral head and a "divot" was detected at the point of reattachment of the AIGHL to the glenoid rim. Arthroscopy revealed unsatisfactory reestablishment of the capsulolabral complex. MR arthrographic findings of reattachment of the AIGHL were significantly associated with arthroscopic findings of reestablishment of the capsulolabral complex (P < .01).

CONCLUSION: MR arthrography can be reliably used for the postoperative assessment of suture-anchor Bankart repair.

© RSNA, 2002

Index terms: Arthroscopy • Shoulder, injuries, 414.4842 • Shoulder, MR, 414.12143 • Shoulder, surgery, 414.45




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