Shoulder Labral Tear Mri, Artifacts And Pitfalls In Shoulder Magnetic Resonance Imaging

Anteriorinferior labral tear with stripping of the periosteum compatible with a soft bankart and a three part lesion.

Jungkook birthday cake 2020. When an mri with contrast is ordered contrast is injected into the vein while the arthrogram injects contrast directly into the joint under fluoroscopy guidance. This means that mr arthrography with the arm in the neutral position may fail to detect the labral tear. Coronal diagram of the superior labrum depicts three entities that may produce linear hyperintensities that mimic a superior labral tear.

Labral injury extends anteriorly from approximately the 10 oclock position to the 6 oclock position. The mri allows accurate assessment of any pathologic changes of the structures of the shoulder including the glenoid labrum the humeral head the articular cartilage and the rotator cuff. Glenoid labral tears are the injuries of the glenoid labrum and a possible cause of the shoulder pain.

Rotator cuff tears the aber view is also very useful for both partial and full thickness tears of the rotator cuff. Cartilage undercutting c a pseudoslap lesion between the lhbt and superior labrum p and a sublabral recess or sulcus r. Clinical presentation patients with labral tears may present with a wide range of symptoms depends on the injury type which are often non.

Slap tears involve the superior glenoid labrum where the long head of biceps tendon inserts. S common configuration of an actual slap lesion. On images of the shoulder with the arm in a neutral position the torn labrum may be held in its normal anatomic position by the intact scapular periosteum which thereby prevents contrast media from entering the tear.

T2 star gradient recall echo images are employed in the assessment of the labrum and for detection of substances that produce susceptibility effects such as calcium hydroxyapatite or loose surgical hardware. In addition chronic tiny superior labral injury. Unlike bankart lesions and alpsa lesions they are uncommonly 20 associated with shoulder instability 5.

The purpose of this article is to review this subject to describe problems related to normal anatomy and variants of the superior and anterosuperior portions of the labrum to perform a critical analysis of the current 10 grade slap lesion classification and mechanisms of injury from the perspective of mri and to describe an mri approach to the diagnosis of such lesions. In the acute setting they are most frequently seen in. Mri shoulder protocols typically involve fat saturated proton density images that are sensitive to internal derangement.

Rule out labral tear to rule out a labral tear an mri arthrogram needs to be ordered not an mri with contrast. They can extend into the tendon involve the glenohumeral ligaments or extend into other quadrants of the labrum.