Imaging findings in posterior instability of the shoulder
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- 作者：Srinivasan Harish ; Arpit Nagar ; Jaydeep Moro ; David Pugh ; Ryan Rebello and John O鈥橬eill
- 关键词：Shoulder ; Posterior instability ; Imaging ; MRI
- 刊名：Skeletal Radiology
- 出版时间：August, 2008
- 出版年：2008
- 期刊代码：198_0364-2348
- 类别：med
- 卷：37
- 期：8
- 页码：693-707
- 数据来源：sp
摘要
Posterior shoulder instability refers to the symptoms and signs resulting from excessive posterior translation of the humerus. Magnetic resonance (MR) imaging is the radiological modality of choice in the diagnostic assessment of posterior instability. Computed tomography (CT) is useful in the evaluation of osseous abnormalities associated with posterior instability. A detailed description of the posterior osseous and labroligamentous abnormalities has evolved recently, and many variant lesions of the posteroinferior labrum and/or capsular structures have been described. As the recommended surgical management of lesions associated with posterior instability is a lesion-specific approach, awareness of the specific lesions that have been described in association with posterior instability helps in pre-surgical planning. The purpose of this article is to review the classification of, and injury mechanisms leading to, posterior shoulder instability and to describe imaging findings associated with posterior instability, with emphasis on MR imaging.