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Journal of the Korean Shoulder and Elbow Society 1999;2(1):41-46.
Published online June 30, 1999.
Meniscoid-type SuperrJior Labrum Associated with Internal Derangement of Shoulder Joint
Chang Hyuk Choi, Koing Woo Kwun, Shin Kun Kim, Sang Wook Lee, Bum Jin Park
Department of Orthopaedic Surgery, School of Medicine, Catholic University of Taegu-Hyosung, Taegu, Korea
견관절내 병변과 동반된 상부관절순의 반월상변형
최창혁, 권굉우, 김신근, 이상욱, 박범진
대구효성가톨릭대학교 의과대학 정형외과학교실
Abstract
Glenoid labrum acts as one of static stabilizer of the glenohumeral joint. It deepens the glenoid socket and may also serve as a chock, acting as a wedge in preventing glenohumeral translation. Two types of variations in labral anatomy were noted by Detrisac and Johnson. Type A has a superior labrum that is detached centrally but well attached peripherally. The type B labrum is well attached centrally and peripherally at all sites. A meniscoid-type labrum is thought to be normal unless there are splits or fragmentation of the overlying labral tissue. Meniscoid type labrum is different from SLAP II lesion in that it has a firm anchoring on the superior labrum. We observed four cases that had a meniscoid variant superior labrum, which covered the superior glenoid unusually larger than normal in the arthroscopic treatment of shoulder pathology including instability and rotator cuff diseases. We did arthroscopic reshaping and debridement of meniscoid variant superior labrum combined with pathologic change of the glenohumeral joint. Further study would be required for understanding the mechanism of the development of meniscoid variant labrum and its clinical significance.
Key Words: Glenohumeral joint; Meniscoid-type labrum; Reshaping
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