Ragozzino A, Russo R, Esposito S, De Ritis R
II Servizio di Radiologia, Diagnostica per Immagini, Azienda Autonoma Ospedaliera di Rilievo Nazionale A. Cardarelli, Napoli.
Radiol Med. 1997 May;93(5):510-3.
We studied the glenohumeral joint, in its different components, with cine MRI. Ten asymptomatic volunteers and 6 patients with recurrent shoulder instability were examined with T2-weighted GE MR sequences on the axial plane with the subjects' arms rotated in different positions. The sections corresponding to the subcoracoid space and bicipital groove were recorded in closed-loop video format for cine display. Normal morphological glenoid labrum changes were demonstrated in different degrees of humerus rotation. The subscapularis tendon and the capsule were redundant and infolded toward the joint on internal rotation in 4/6 patients. We found capsular detachment in 2 patients, humeral head subluxation in 3 and subcoracoid impingement in 2 patients. Cine MRI permitted the accurate study of the changes in the glenoid labrum, capsule and subscapularis tendon in all patients and it also showed narrowed coracohumeral distance (< 11 mm) on internal rotation.
我们采用电影磁共振成像（cine MRI）对肱盂关节的不同组成部分进行了研究。对10名无症状志愿者和6名复发性肩关节不稳定患者，使用T2加权梯度回波（GE）磁共振序列在轴位平面上进行检查，检查时受试者的手臂处于不同旋转位置。对应于喙突下间隙和肱二头肌沟的切片以闭环视频格式记录以便电影显示。在不同程度的肱骨旋转中均显示出正常形态的盂唇有不同程度的变化。4/6的患者在肱骨内旋时肩胛下肌腱和关节囊冗余并向关节内折叠。我们发现2例患者存在关节囊分离，3例患者有肱骨头半脱位，2例患者有喙突下撞击。电影MRI能够准确研究所有患者的盂唇、关节囊和肩胛下肌腱的变化，并且还显示出肱骨内旋时喙肱距离变窄（<11mm）。
