Zuckerman J D, Leblanc J M, Choueka J, Kummer F
Hospital for Joint Diseases Orthopaedic Institute, New York, New York 10003.
J Bone Joint Surg Br. 1991 May;73(3):402-5. doi: 10.1302/0301-620X.73B3.1670437.
A cadaver study was performed to determine the effect of arm position and capsular release on rotator cuff repair. Artificial defects were made in the rotator cuff to include only the supraspinatus (small) or both supraspinatus and infraspinatus (large). The defects were repaired in a standard manner with the shoulder abducted 30 degrees at the glenohumeral joint. Strain gauges were placed on the lateral cortex of the greater tuberosity and measurements were recorded in 36 different combinations of abduction, flexion/extension, and medial/lateral rotation. Readings were obtained before and after capsular release. With small tears, tension in the repair increased significantly with movement from 30 degrees to 15 degrees of abduction (p < 0.01) but was minimally affected by changes in flexion or rotation. Capsular release significantly reduced the force (p < 0.01) at 0 degree and 15 degrees abduction. For large tears, abduction of 30 degrees or more with lateral rotation and extension consistently produced the lowest values. Capsular release resulted in 30% less force at 0 degree abduction (p < 0.05).
进行了一项尸体研究，以确定手臂位置和关节囊松解对肩袖修复的影响。在肩袖上制造人工缺损，使其仅包括冈上肌（小缺损）或同时包括冈上肌和冈下肌（大缺损）。以标准方式修复缺损，此时盂肱关节外展30度。将应变片放置在大结节的外侧皮质上，并在36种不同的外展、屈伸和内外旋组合中记录测量值。在关节囊松解前后获取读数。对于小撕裂，随着外展从30度移动到15度，修复处的张力显著增加（p < 0.01），但受屈伸或旋转变化的影响最小。关节囊松解在0度和15度外展时显著降低了张力（p < 0.01）。对于大撕裂，外展30度或更多并伴有外旋和伸展时，始终产生最低值。关节囊松解在0度外展时使张力降低30%（p < 0.05）。
