Palmer W E, Brown J H, Rosenthal D I
Department of Bone and Joint Radiology, Massachusetts General Hospital, Boston 02114.
Radiology. 1994 Mar;190(3):645-51. doi: 10.1148/radiology.190.3.8115604.
To determine the usefulness of magnetic resonance (MR) arthrography in assessment of the labral-ligamentous complex and test the hypothesis that the inferior glenohumeral ligament (IGHL) is an important anatomic feature of clinical instability.
Forty-eight shoulders with labral diagnoses proved with arthroscopy or open surgery were prospectively examined with MR arthrography after intraarticular injection of gadopentetate dimeglumine.
Surgical findings showed that 14 labra were normal, 29 were torn, and six were deficient. (One labrum was torn and deficient in separate locations.) MR arthrographic findings had a diagnostic sensitivity of 91% and specificity of 93%. In 32 patients with proved labral abnormalities, 30 lesions involved the labral-bicipital junction, origins of the glenohumeral ligaments, or both. In 22 of 23 shoulders considered clinically unstable, a labral abnormality involved the origin of the IGHL.
MR arthrography accurately shows the relationship of labral lesions to the origins of the glenohumeral ligaments and helps in distinction between stable and unstable lesions.
确定磁共振关节造影在评估盂唇 - 韧带复合体中的作用，并验证下盂肱韧带（IGHL）是临床不稳定的重要解剖学特征这一假设。
48例经关节镜或开放手术证实有盂唇诊断的肩部，在关节内注射钆喷酸葡胺后进行前瞻性磁共振关节造影检查。
手术结果显示，14个盂唇正常，29个撕裂，6个缺损。（1个盂唇在不同部位有撕裂和缺损。）磁共振关节造影结果的诊断敏感性为91%，特异性为93%。在32例经证实有盂唇异常的患者中，30处病变累及盂唇 - 肱二头肌交界处、盂肱韧带起点或两者。在23例临床诊断为不稳定的肩部中，22例的盂唇异常累及IGHL起点。
磁共振关节造影能准确显示盂唇病变与盂肱韧带起点的关系，有助于区分稳定和不稳定病变。
