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目的:总结分析肩关节后方不稳定的CT、MRI表现特点。方法:16例经关节镜手术检查证实病例,对肩关节后方不稳定患者的关节盂、肱骨头和后盂唇关节囊复合体异常在CT、MRI上表现特点进行总结分析。结果:肩关节后方不稳定影像征象包括关节盂发育不良(后部关节盂缘缺如)、反Bankart骨折、反Hill-sachs骨折、Bennett病变、后盂唇关节囊复合体病变、肱骨头后方半脱位或完全脱位。结论:对于肩关节后方不稳定的患者,行患侧肩关节CT、MRI能够清晰显示关节盂、肱骨头和后盂唇关节囊复合体异常,是肩关节后方不稳定的一种有效准确的检查方法。
Objective: To summarize and analyze the unstable CT and MRI features of the posterior shoulder joint. Methods: Sixteen cases confirmed by arthroscopic surgery were retrospectively analyzed on CT and MRI features of the articular glenoid, humeral head and posterior labrum capsular complex anomalies in patients with posterior shoulder instability. RESULTS: Unstable posterior shoulder images included glenoid dysplasia (lack of posterior glenoid rim), anti-Bankart fractures, anti-Hill-sachs fractures, Bennett’s disease, posterior labrum capsular complex lesions, posterior humeral head halves Dislocation or dislocation. CONCLUSIONS: In patients with unstable posterior shoulder, CT and MRI of the affected shoulder can clearly show the anomalies of the joint glenoid, humeral head and posterior labrum joint capsule, and it is an effective and accurate examination of instability of the posterior shoulder joint method.