Posterior Labrum Tear Shoulder Mri, Greg Portland M D

In these cases fluid or contrast material may sometimes outline the medial aspect of the posterior glenoid neck 2.

Bts tiny tan drawing easy. 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. Unlike bankart lesions and alpsa lesions they are uncommonly 20 associated with shoulder instability 5. Medical records were reviewed for clinical diagnosis of posterior instability and history of shoulder trauma.

10a mri of posterior labrum tear. Superior labral anterior posterior tear slap rotator cuff tear. Mri arthrography shows evidence of a posterior labral tear and partial undersurface rotator cuff pathology figure 1 figure 1.

Axial t2 mri scan of a patient with a posterior labral tear. Patient referred for 3t mri arthrography of the shoulder for suspicion of labral injury. The position of the humeral head relative to the glenoid was significantly more posterior in patients with posterior labral tear than in patients with a normal posterior labrum 49 mm versus 07 mm.

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. There are two types of labral tears. Slap tears and bankart lesions.

In the acute setting they are most frequently seen in. Injection of gadolinium based contrast agent allowed for visualization of the labrum and subsequent diagnosis of posterior tear. Slap is an acronym that stands for superior labral tear from anterior to posterior.

Slap tears involve the superior glenoid labrum where the long head of biceps tendon inserts. On mr arthrography it is customary to combine t1 t1 fs and t2 fs sequences for further assessment. They can extend into the tendon involve the glenohumeral ligaments or extend into other quadrants of the labrum.

A small paralabral cyst is identified at the site of the tear. On conventional mr labral tears are best seen on fat saturated fluid sensitive sequences. 74 year old woman with shoulder pain after fall.

Mr imaging and mr arthrography show fluid or contrast material extending into the substance of the posterior labrum or deep to the posterior labrum in combination with a torn scapular periosteum. Transaxial fat suppressed t2 weighted mr image trte 314080 of left shoulder shows posterior labrum tear arrow and joint effusion.