Merila M, Leibecke T, Gehl H-B, Busch L-C, Russlies M, Eller A, Haviko T, Kolts I
Department of Orthopaedics, Clinic of Traumatology and Orthopaedics, University of Tartu, Puusepa 8, 51014 Tartu, Estonia.
Eur Radiol. 2004 Aug;14(8):1421-6. doi: 10.1007/s00330-004-2296-2. Epub 2004 Mar 12.
The purpose of this study was to demonstrate the macroscopic and MRI anatomy of the fasciculus obliquus, otherwise known as the ligamentum glenohumerale spirale or spiral GHL of the anterior shoulder joint capsule. Conventional and MR arthrography (1.5-T device Somatom Symphony, Siemens with shoulder coil) images in standard planes were compared with gross anatomic dissection findings in six fresh shoulder specimens from three cadavers. The MR imaging protocol included T1, PD and DESS 3D WI sequences. The macroscopically recognisable band-the spiral GHL-was identified by anatomic dissection and MRI in all the specimens. It was best visualised by MR arthrography on axial and oblique sagittal planes (T1; PD WI) and appeared as a low signal intensity stripe within the superficial layer of the anterior joint capsule. The absence of the variable middle glenohumeral ligament did not influence the anatomic properties and the MR imaging of the spiral GHL. Diagnostic visualisation of the normal anatomic structures is a prerequisite to distinguish between normal and pathologic conditions. Anatomy of the spiral GHL can be used by radiologists for more detailed interpretation of the anterior shoulder joint capsule ligaments on MR images.
本研究的目的是展示斜束的宏观和MRI解剖结构，斜束也被称为前肩关节囊的肱盂螺旋韧带或螺旋状肱盂韧带（GHL）。将标准平面的传统和MR关节造影（1.5-T设备Somatom Symphony，西门子，配备肩部线圈）图像与来自三具尸体的六个新鲜肩部标本的大体解剖结果进行比较。MR成像方案包括T1、质子密度（PD）和双激发稳态（DESS）三维加权成像（3D WI）序列。在所有标本中，通过解剖和MRI识别出宏观上可识别的束带——螺旋状GHL。在轴向和斜矢状面上通过MR关节造影（T1；PD加权成像）能最佳显示它，它在前关节囊表层内表现为低信号强度条纹。肱盂中韧带的变异缺失并不影响螺旋状GHL的解剖特性和MR成像。正常解剖结构的诊断性显示是区分正常和病理状况的前提。放射科医生可以利用螺旋状GHL的解剖结构，在MR图像上更详细地解读前肩关节囊韧带。
