著者
鈴木 一秀 筒井 廣明 三原 研一 牧内 大輔 西中 直也
出版者
Japan Shoulder Society
雑誌
肩関節 (ISSN:09104461)
巻号頁・発行日
vol.31, no.3, pp.489-492, 2007

The purpose of this study was to clarify the condition of reattachment of the labrum to the glenoid rim after an arthroscopic Bankart procedure using suture anchors with an MR arthrography (MRA). We studied 48 cases ( 35 males and 13 females) after surgery with a recurrent anterior dislocation or subluxation. The patients ranged in age from 16 to 53 years old (average, 24.7). An MRA was performed at an average 11.8 months after the operation. In the MRA with an axial image and an oblique axial image in abduction and external rotation (ABER) position, we evaluated the invasion of contrast materials between the labrum and glenoid rim using the inferior 6 slice images of the glenoid rim. The 576 slices were categorized into 1 of 3 groups : good, fair, and poor. We used the JSS Shoulder Instability Score (Instability Score) for clinical evaluation. Axial images (total of slices : 288) revealed good (83.3%), fair (14.9%), and poor (1.7%). Oblique axial images in the ABER position (total of slices : 288) revealed good (77.43%), fair (19.8%), and poor (2.8%). The clinical results using the Instability Score had no significant differences between the group that had all good results in six slices and the group that had fair or poor results more than 1 slice in 6 slices of axial images and oblique axial image in the ABER position. The healing of IGHL-LC to the medial glenoid neck was recognized in 97-98% of the total slices. A non-union or re-avulsion of the labrum to articular cartilage of the glenoid were recognized in 15 to 20 % of the total slices, however the clinical results of arthroscopic Bankart repair were satisfactory.

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