肩关节后方不稳定的CT和MR特点?

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。

CT and MRM anifest Features of Posterior Shoulder Instability

Objective: To evaluate the manifestations ofPosteriorshoulderInstabilityon CT, MRI. Methods: 16 cases ofPosteriorshoulderInstabilitywere examined both by CT, MRI and arthroscopy and to analyze the manifestations on CT, MRI. Results:PosteriorshoulderInstabilityincluded Glenoid hypoplasial, Reverse osseous Bankart fracture, Reverse Hill-Sachs fracture,Bennett lesion,Lesions of the posterior labrum and capsular complex, posterior subluxation or dislocation of the humeral head relative to the glenoid fossa. Conclusion:Lesions of the glenoid and humerus, posterior glenoid labrum, and posterior joint capsule can be identified on CT, MRI in patients with posterior shoulder instability. CT, MRI is a good examine method of Posterior shoulder Instability.