Applegate Gregory R, Hewitt Michael, Snyder Stephen J, Watson Elizabeth, Kwak Sandy, Resnick Donald
Valley Advanced Imaging Medical Group, Van Nuys, California, USA.
Arthroscopy. 2004 Nov;20(9):959-63. doi: 10.1016/j.arthro.2004.08.017.
In the magnetic resonance (MR) evaluation of the glenoid labrum, all studies to our knowledge have included mixed populations of patients, those with acute shoulder injuries as well as patients with chronic shoulder disorders. The focus of this investigation was to assess the effectiveness of MR arthrography in patients with chronic labral tears, excluding those with acute injuries.
Prospective case series.
Conventional MR images and MR arthrograms were obtained in 36 patients from April 1994 to April 1997. A single experienced musculoskeletal radiologist read all MR images. Each patient subsequently underwent shoulder arthroscopy performed by a single highly experienced shoulder arthroscopist. Detailed arthroscopic reports were then reviewed and compared with the MR findings documented before surgery, with arthroscopic findings being the standard of reference for comparison. Inclusion criteria required greater than 6 months of shoulder symptoms before imaging, thus eliminating acute injuries.
SLAP lesions were diagnosed at the time of surgery in 11 of 36 patients (31%). The sensitivity was 100% (11 of 11 patients) and the specificity was 88% (22 of 25 patients). Accuracy for SLAP lesions was 92% (33 of 36 patients). Anterior labral tears were diagnosed surgically in 12 of 36 patients (33%). The sensitivity was 86% (12 of 14 patients) and specificity was 86% (19 of 22 patients). Accuracy for labral tears was 86% (31 of 36 patients).
MR arthrography is an accurate technique for assessing the glenoid labrum in patients with chronic labral tears.
Level I.
在对盂唇进行磁共振（MR）评估时，据我们所知，所有研究纳入的患者群体都很混杂，包括急性肩部损伤患者以及慢性肩部疾病患者。本研究的重点是评估磁共振关节造影对慢性盂唇撕裂患者（不包括急性损伤患者）的有效性。
前瞻性病例系列研究。
1994年4月至1997年4月期间，对36例患者进行了常规MR图像和磁共振关节造影检查。由一位经验丰富的肌肉骨骼放射科医生解读所有MR图像。随后，每位患者均接受了由一位经验丰富的肩部关节镜医生进行的肩关节镜检查。然后对详细的关节镜检查报告进行回顾，并与手术前记录的MR检查结果进行比较，以关节镜检查结果作为比较的参考标准。纳入标准要求在成像前肩部症状持续超过6个月，从而排除急性损伤患者。
36例患者中有11例（31%）在手术时被诊断为上盂唇前上象限（SLAP）损伤。敏感性为100%（11例患者中的11例），特异性为88%（25例患者中的22例）。SLAP损伤的准确率为92%（36例患者中的33例）。36例患者中有12例（33%）在手术中被诊断为前盂唇撕裂。敏感性为86%（14例患者中的12例），特异性为86%（22例患者中的19例）。盂唇撕裂的准确率为86%（36例患者中的31例）。
磁共振关节造影是评估慢性盂唇撕裂患者盂唇的一种准确技术。
I级。
