摘要 目的 探讨MRI对喙突下撞击综合征的诊断价值。 方法 回顾性分析观察组23例经临床及关节镜手术证实为喙突下撞击综合征病人及对照组28例正常志愿者肩关节的MRI影像，分别测量两组肩关节的喙肱间距及喙盂间距，并进行比较。 结果 观察组与对照组喙肱间距平均值分别为（7.64±1.37）、（10.38±1.00）mm，观察组喙肱间距平均值小于对照组，差异有统计学意义（t=－8.278，P＜0.05）；观察组、对照组喙盂间距平均值分别为（14.19±2.92）、（9.71±1.48）mm，观察组喙盂间距平均值大于对照组，两组比较差异具有统计学意义（t=6.673，P＜0.05）。 结论 喙突下撞击综合征病人的喙肱间距较正常人小，而喙盂间距较正常人大，肩关节MRI影像有助于以上两间距的测量并为诊断提供依据。 Abstract：Objective To investigate the value of magnetic resonance imaging (MRI) in the diagnosis of subcoracoid impingement syndrome. Methods A retrospective analysis was performed for the MRI images of 23 patients (observation group) with subcoracoid impingement syndrome confirmed by clinical examination and arthroscopic surgery and 28 healthy volunteers (control group). The coracoid-humeral distance and the coracoid-glenoid distance were measured, and then a statistical analysis was performed. Results The mean coracoid-humeral distance was (7.64±1.37)mm in the observation group and (10.38±1.00)mm in the control group, and the observation group had a significantly shorter mean coracoid-humeral distance than the control group (t=-8.278, P<0.05); the mean coracoid-glenoid distance was (14.19±2.92)mm in the observation group and (9.71±1.48)mm in the control group, and the observation group had a significantly longer mean coracoid-glenoid distance than the control group (t=6.673, P<0.05). Conclusion Patients with subcoracoid impingement syndrome have a shorter coracoid-humeral distance and a longer coracoid-glenoid distance than normal individuals, and MRI images of the shoulder joint can help to measure such distances and thus provide a basis for diagnosis
