Moorman Claude T, Warren Russell F, Deng Xiang-Hua, Wickiewicz Thomas L, Torzilli Peter A
Sports Medicine Section, Duke University Medical Center, Durham, NC, USA.
J Surg Orthop Adv. 2012 Winter;21(4):210-7. doi: 10.3113/jsoa.2012.0210.
This study sought to determine the role of the coracoacromial ligament and related arch structures in glenohumeral joint stabilization. Eight fresh-frozen cadaver specimens were tested at multiple angles of glenohumeral abduction and rotation for translations (in the direction of and perpendicular to a 50-N force) in intact, vented shoulders and after three interventions: coracoacromial veil release, coracoacromial ligament release, and anterior acromioplasty. After releasing the veil, an inferior force significantly increased inferior translation at lower angles of abduction with no additional increase after coracoacromial ligament section or acromioplasty. After ligament release or acromioplasty, a superior force increased superior translation at all angles. Few increases in anterior or posterior translations were observed. The coracoacromial veil interacts with the structures of the coracoacromial arch and glenohumeral capsule to limit inferior humeral translation. Likewise, the coracoacromial ligament and the acromian serve to limit superior translation. Attempts to preserve these structures may help improve surgical outcomes.
本研究旨在确定喙肩韧带及相关弓状结构在盂肱关节稳定中的作用。对8个新鲜冷冻尸体标本在盂肱关节外展和旋转的多个角度进行测试，以测量完整、开孔肩部以及在三种干预措施（喙肩膜松解、喙肩韧带松解和前肩峰成形术）后沿50 N力的方向和平行于该力的方向的平移情况。松解喙肩膜后，向下的力在较低外展角度时显著增加了向下平移，而在喙肩韧带切断或肩峰成形术后无进一步增加。在韧带松解或肩峰成形术后，向上的力在所有角度均增加了向上平移。前后平移的增加很少。喙肩膜与喙肩弓和盂肱关节囊结构相互作用，以限制肱骨向下平移。同样，喙肩韧带和肩峰起到限制向上平移的作用。保留这些结构的尝试可能有助于改善手术效果。
