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Journal of the Korean Shoulder and Elbow Society 1999;2(2):93-98.
Published online December 30, 1999.
Prognostic Factors for Arthroscopic Subacromial Decompression
Sung-Jae Kim , Sang-Jin Shin, Moon-Soo Park
Department of Orthopaedic Surgery, College of Medicine, Yonsei University
관절경적 견봉하 감압술에 영향을 미치는 예후 인자
김성재, 신상진, 박문수
연세대학교 의과대학 정형외과학교실
: The purpose of this study was to analyze the prognostic factors for arthroscopic subacromial decompression and rotator cuff debridement in impingement syndrome. Materials and methods : Arthroscopic subacromial decompression with or without rotator cuff debridement was performed in 46 cases of 44 consecutive patients with either stageⅡ or stage Ⅲ impingement syndrome. The patients were classified by Neer's stage and size of tear according to the criteria of Cofield. The results were assessed with UCLA rating scale. We used repeated measures ANOVA and Chi-square test to assess correlation between the results and six variables including stage, rotator cuff tear size, age at the operation, duration of symptom, throwing sports activity, and trauma history. The follow-up period averaged 53 months(range, 27 to 92 months).
: Lower stage by Neer's stage was correlated with higher postoperative scores and with significant difference between preoperative and postoperative scores of UCLA rating scale. However, other factors did not show significant influence upon the results. The patients with complete rotator cuff who showed satisfactory results after procedures were older and had shorter symptom duration, small cuff size.
: In patients with impingement syndrome treated by arthroscopic debridement and subacromial decompression, superior results were obtained when belonged to a lower Neer stage and when the rotator cuff was only partially torn. In cases with complete rotator cuff tear, higher success rates were obtained with smaller tear sizes. Age at operation, duration of symptoms, throwing athlete, traumatic tear did not affect the results.
Key Words: Shoulder, Impingement syndrome, Subacromial decompression, Arthroscopy,


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