Slap Tear

2239 Words May 1st, 2016 9 Pages
SLAP Lesion Tear
A SLAP lesion tear is an injury to the shoulder. This can cause painful symptoms and difficulty with overhead activities whether they be athletic or those of daily living. In 1985, Andrews et al were the first to describe the superior labrum tear. In their experience, they identified tears of the labrum from throwing athletes located anterosuperor near the origin of the bicep tendon. The cause of the lesion to tear was the bicep tendon being pulled off the labrum from the force generated during the throwing motion. As time went on, the labral tears got categorized into four different types of classifications called SLAP lesions by Snyder in 1990. A SLAP lesion, as described by Snyder involves tears of the superior
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SLAP lesion can develop due to the repetitive forces of the throwing motion. Athletes that are involved in overhead activities tend to develop a struggle in glenohumeral internal rotation. Both internal impingement and peel back mechanisms can cause that to happen.
Walch et al first described the internal impingement as an intraarticular impingement of the rotator cuff in the abducted and externally rotated shoulder. With 90 degrees of both abduction and external rotation, the articular surface of the posterior superior rotator cuff becomes pinched between the labrum and the greater tuberosity.5 The authors separated the labral lesions from SLAP lesions which extended anteriorly to the biceps anchor at the supraglenoid tubercle, concluding that internal impingement may be responsible for a subset of patients with isolated posterior SLAP tears.5
Burkhart et. al presented the peel back (posterior superior) mechanism that causes SLAP lesions. The peel back has its origin in a biceps vector change in the position of abduction and external rotation resulting in torsional forces to the labra-bicipital complex.6 Once the posterior superior labrum gets fatigued, it will start to rotate medially over the upper rim of the glenoid. This could happen in a late cocking position of

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