The advent of shoulder arthroscopy, as well as our improved understanding of shoulder anatomy and biomechanics, has led to the identification of previously undiagnosed lesions involving the superior labrum and biceps tendon anchor. Although the history and physical examinations as well as improved imaging modalities (arthro-MRI, arthro-CT) are extremely important in understanding the pathology, the definitive diagnosis of superior labrum anterior to posterior (SLAP) lesions is accomplished through diagnostic arthroscopy. Treatment of these lesions is directed according to the type of SLAP lesion. Generally, type I did not need any treatment, type III are debrided, whereas type II and many type IV lesions are repaired. The purpose of this article is to review the anatomy, classification, diagnosis and current treatment recommendations of SLAP lesions.