Polguj M, Jędrzejewski K, Topol M
Department of Angiology, Medical University of Lodz, Lodz, Poland.
Folia Morphol (Warsz). 2012 Nov;71(4):282-4.
The suprascapular notch (SSN) is the most common site of compression and injury of the suprascapular nerve (SN), which results in a neuropathy known as SN entrapment. The SSN is enclosed from the top by the superior transverse scapular ligament (STSL), creating a tunnel for the SN. On both sides of the SSN, below the STSL, the anterior coracoscapular ligament is found. This fibrous band can potentially narrow the opening and contribute to the occurrence of suprascapular entrapment syndrome. This study presents the first case of a bifid anterior coracoscapular ligament coexisting with an atypical SN course, which has never been described in the literature before. Knowledge of such anatomical variations can be helpful in arthroscopic and open procedures of the suprascapular region and confirms the safety of operative decompression for entrapment of the SN.
肩胛上切迹（SSN）是肩胛上神经（SN）受压和损伤最常见的部位，可导致一种称为肩胛上神经卡压的神经病变。肩胛上切迹上方由肩胛上横韧带（STSL）包绕，形成一个供肩胛上神经通过的通道。在肩胛上切迹两侧、肩胛上横韧带下方可发现喙肩韧带。这条纤维带可能会使通道变窄，促使肩胛上神经卡压综合征的发生。本研究报道了首例喙肩韧带双叉畸形与非典型肩胛上神经走行并存的病例，此前文献中从未有过相关描述。了解此类解剖变异有助于肩胛上区域的关节镜手术和开放手术，并证实了对肩胛上神经卡压进行手术减压的安全性。
