Slap Tear Type 3 Superior labral anterior posterior (SLAP) Before the use of shoulder arthroscopy and magnetic resonance imaging (MRI) in the diagnosis and management of shoulder problems, glenoid labrum lesions were underappreciated. More specifically, superior labrum lesions about the insertion of the long biceps tendon were typically noted or managed using standard open surgical techniques. An improved understanding of the surgical anatomy and the biomechanical contributions of the superior l