Leroux J L, Hebert P, Mouilleron P, Thomas E, Bonnel F, Blotman F
Department of Physical Medicine, Lapeyronie Hospital, Montpellier, France.
Clin Orthop Relat Res. 1995 Nov(320):46-54.
In healthy subjects, the shoulder internal rotator muscle strength overrides the external rotators. This has been confirmed in different isokinetic studies showing the ratio of the relative strengths of the internal to external rotators to range from 1.3 to 1.5 points, depending on the study. The authors previously reported a decrease in the relative strength ratio of the internal to external rotators to close to 1 in patients suffering from Neer's impingement syndrome. The aim of the present study was to assess, long after surgery (mean, 44.5 months), the isokinetic strength performance of shoulder rotator muscles in 72 patients who had had operative treatment for chronic subacromial impingement using anterior acromioplasty, sometimes combined with cuff repair surgery. Tests were conducted with a Biodex Multi-Joint System in the plane of the scapula and in 45 degrees abduction at 60 degrees and 180 degrees per second. Peak torque and average power were calculated. The mean ratios of relative strengths of the internal to external rotators ranged from 1.3 to 1.6 points depending on the parameter studied and the test speed. These results indicate that surgery restores normal muscular balance between shoulder rotator muscles affected by the impingement syndrome.
在健康受试者中，肩部内旋肌力量强于外旋肌。这一点在不同的等速运动研究中得到了证实，根据研究不同，内旋肌与外旋肌相对力量的比值在1.3至1.5分之间。作者之前报道过，患有Neer撞击综合征的患者，其内旋肌与外旋肌的相对力量比值会降至接近1。本研究的目的是评估72例因慢性肩峰下撞击症接受前路肩峰成形术（有时联合袖带修复手术）手术治疗的患者，在术后很长一段时间（平均44.5个月），肩部旋转肌的等速力量表现。使用Biodex多关节系统在肩胛平面以及在60度和180度每秒的外展45度位置进行测试。计算峰值扭矩和平均功率。根据所研究的参数和测试速度，内旋肌与外旋肌相对力量的平均比值在1.3至1.6分之间。这些结果表明，手术恢复了受撞击综合征影响的肩部旋转肌之间的正常肌肉平衡。
