在 glenohumeral 不稳定性的磁性的回声成像

• 作者: Manisha Jana Shivanand Gamanagatti
• 来源期刊: 世界放射学杂志：英文版（电子版）
• 学科: 医学
• 关键词: SHOULDER JOINT INSTABILITY MAGNETIC RESONANCE imaging MAGNETIC RESONANCE arthrogram
• 年，卷（期）: 2011,（9）
• 页码范围: 224-232
• 页数: 9页
• 分类号: R684

摘要

The glenohumeral joint is the most commonly dislocated joint of the body and anterior instability is the most common type of shoulder instability.Magnetic resonance (MR) imaging,and more recently,MR arthrography,have become the essential investigation modalities of glenohumeral instability,especially for pre-procedure evaluation before arthroscopic surgery.Injuries associated with glenohumeral instability are variable,and can involve the bones,the labor-ligamentous components,or the rotator cuff.Anterior instability is associated with injuries of the anterior labrum and the anterior band of the inferior glenohumeral ligament,in the form of Bankart lesion and its variants;whereas posterior instability is associated with reverse Bankart and reverse Hill-Sachs lesion.Multidirectional instability often has no labral pathology on imaging but shows specific osseous changes such as increased chondrolabral retroversion.This article reviews the relevant anatomy in brief,the MR imaging technique and the arthrographic technique,and describes the MR findings in each type of instability as well as common imaging pitfalls.