Tehranzadeh Arash D, Fronek Jan, Resnick Donald
UCSD Musculoskeletal Radiology, Los Angeles, CA 90024, USA.
Clin Imaging. 2007 Sep-Oct;31(5):343-8. doi: 10.1016/j.clinimag.2007.05.005.
In the high-performance athlete, acquired thickening of the posterior joint capsule is a proposed etiology for glenohumeral internal rotational deficit (GIRD). The purpose of this study was to present our MR arthrographic imaging observations of posterior capsular thickening in professional baseball players who present with reduced throwing velocity related to pain and clinical findings of internal rotational deficit of the glenohumeral joint. Our observations of MR imaging features in patients with clinical and arthroscopic manifestations of GIRD lesions include articular surface partial thickness tears of the supraspinatus and infraspinatus tendons, superoposterior subluxation of the humeral head and SLAP tears of the labrum. Although no empiric standard currently exists for the axial dimension thickness of the shoulder capsule, we have observed a thickened appearance of the posterior band of the inferior glenohumeral ligament in these patients.
在高水平运动员中，后关节囊的后天性增厚被认为是肩肱关节内旋不足（GIRD）的病因。本研究的目的是展示我们对职业棒球运动员后关节囊增厚的磁共振关节造影成像观察结果，这些运动员出现与疼痛相关的投球速度降低以及肩肱关节内旋不足的临床症状。我们对具有GIRD病变临床和关节镜表现患者的磁共振成像特征观察包括：冈上肌和冈下肌腱的关节面部分厚度撕裂、肱骨头的上后方半脱位以及盂唇的SLAP撕裂。尽管目前尚无肩关节囊轴向尺寸厚度的经验标准，但我们在这些患者中观察到了下肩肱韧带后束增厚的表现。
