Anterior Labrum Tear Shoulder Mri, Shoulder Labral Tears Mri

They can extend into the tendon involve the glenohumeral ligaments or extend into other quadrants of the labrum.

Min yoongi cute. Mr imaging diagnostic criteria for labral tear versus anatomic variant. One should not mistake the gap between the labrum and the anterior aspect of the middle glenohumeral ligament for a labral tear. In the aber position the inferior glenohumeral ligament is stretched resulting in tension on the anteroinferior labrum allowing intra articular contrast to get between.

A bankart lesion is an injury of the anterior glenoid labrum due to anterior shoulder dislocation. Normal glenohumeral articular hyaline cartilage can simulate a superior or anterosuperior labral tear characterized by an area of linear high signal intensity interposed between the labrum and glenoid fossa 18. That research showed the sensitivity for anterior and posterior labral tears to be 89 and 86 and specificity as 100 and 100.

The best tests available to make the diagnosis of a labral tear are magnetic resonance imaging mri scans or a test called a ct arthrogram the latter is a cat scan preceded by an arthrogram where dye is injected into the shoulder. One anterior labral tear detected by mri could not be verified by arthroscopy. Sensitivity of mri for detection of superior labral anterior posterior slap lesions was 90 and specificity was 100 in 67 patients in one study.

However there are several mr imaging characteristics that can aid. The process of diagnosing a labral tear is complicated by the various pitfalls in imaging diagnosis often present in the superior labrum 1734 which can make this a challenging task for the radiologist. Labral tears the abduction external rotation aber view is excellent for assessing the anteroinferior labrum at the 3 6 oclock position where most labral tears are located.

The glenoid labrum an important static stabilizer of the shoulder joint has several normal labral variants that can be difficult to discriminate from labral tears and is subject to specific pathologic lesions anteroinferior posteroinferior and superior labral anteroposterior lesions with characteristic imaging features. On mr arthrography it is customary to combine t1 t1 fs and t2 fs sequences for further assessment. All 16 labral tears detected by mri were bankart type i tears of the anterior glenoid except for one superior labral tear from anterior to posterior slap tear.

These labral tears make the shoulder unstable and susceptible to repeated dislocations. On conventional mr labral tears are best seen on fat saturated fluid sensitive sequences. Both of these tests are relatively good at defining a labrum tear due to a subluxation or dislocation but they.

Unlike bankart lesions and alpsa lesions they are uncommonly 20 associated with shoulder instability 5. All 13 slap tears 10 type 2 and 3 type 3 except for one could be found by arthroscopy only.