Magnetic resonance imaging evaluation of the inferior glenohumeral ligament: Non-arthrographic imaging in abduction and external rotation

A meta-analysis of the diagnostic test accuracy of MRA and MRI for the detection of glenoid labral injury

“…Given these indications of greater diagnostic accuracy, further study is therefore warranted to investigate the appropriateness of using higher field strength machines in the assessment of patients with suspected labral lesions. Six studies assessed the diagnostic test accuracy of MRI or MRA in abduction and external rotation shoulder positions (ABER) [21,24,[31][32][33][34]. It has been hypothesised that by positioning the patient's shoulder in this position, the anterior band of the inferior glenohumeral ligament is then placed under greater tension so that the anterior glenoid labrum is then distracted which optimises the penetration of contrast material into a tear [31].…”

Magnetic Resonance Imaging Appearance of a Repaired Capsulolabral Complex after Arthroscopic Bankart Repair

“…The main treatment for recurrent anterior or anteroinferior instability is Bankart lesion repair, reattachment of the anterior inferior labrum, along with the ligament while at the same time being attentive to and reducing any redundant or patulous capsule. 2,12,13 The labrum increases glenoid depth and may serve as a “chock block” to prevent excessive humeral head rollback. 1,4,9 Metcalf et al 10 concluded that capsulolabral augmentation increases gleno-numeral stability by 2 separate mechanisms: deepening the glenoid concavity and reducing capsular laxity.…”

Evaluation and Treatment of Shoulder Instability

“…Magnetic resonance imaging has been reported to have a specifi city and sensitivity of up to 82% and 94%, respectively. 28 However, computed tomography (CT) and 3-dimensional CT images are most useful for detecting bone defects that may destabilize the shoulder. 29…”