Geometric and mechanical properties of the coracoacromial ligament and their relationship to rotator cuff disease.
Geometric and mechanical properties of the coracoacromial ligament and their relationship to rotator cuff disease.
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DOI：
10.1097/00003086-199407000-00003
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发表时间：
1994-07
影响因子：
4.2
通讯作者：
L. Soslowsky;C. H. An;S. P. Johnston;J. Carpenter
中科院分区：
文献类型：
--
作者：
L. Soslowsky;C. H. An;S. P. Johnston;J. Carpenter
上肢疼痛和残疾的最常见原因之一是肩袖肌腱的炎症。当周围结构没有明显的骨性异常时，喙肩韧带可能是造成肩袖肌腱撞击的原因。准确测定了20例喙肩韧带的几何和力学性能，其中10例来自肩袖撕裂的肩部，10例来自正常肩部。在比较肩袖撕裂和正常标本，统计学上显着的变化，几何性质的测量在外侧带，但不是在内侧带，韧带。外侧带是最有可能撞击肩袖的区域，在肩袖撕裂的样本中较短且横截面积较大。虽然正常组和肩袖撕裂组之间的韧带结构特性没有统计学差异，但材料特性有明显变化。先前报道的肩袖撕裂患者韧带的组织学差异得到了当前研究中测量的材料性能降低的支持。喙肩韧带的差异是否导致撞击还是由于撞击，目前尚不清楚。
One of the most common causes of pain and disability in the upper limb is inflammation of the rotator cuff tendons. When no significant bony abnormality exists in the surrounding structures, the coracoacromial ligament has been implicated as a possible cause of impingement on the cuff tendons. Geometric and mechanical properties of 20 coracoacromial ligaments, 10 from shoulders with rotator cuff tears and 10 from normal shoulders, were accurately determined. In comparing rotator cuff tear and normal specimens, statistically significant changes in geometric properties were measured in the lateral band, but not in the medial band, of the ligament. The lateral band, which is the region most likely to impinge on the rotator cuff, was shorter and had a larger cross-sectional area in specimens with rotator cuff tears. Although there were no statistical differences in structural properties of the ligament between normal and rotator cuff tear groups, significant changes were evident in material properties. Previously reported histologic differences in the ligament in shoulders with rotator cuff tears are supported by the decreased material properties measured in the current study. Whether the differences in the coracoacromial ligament cause impingement or are due to impingement is still unknown at this time.