What is a clinically important superior labrum anterior to posterior tear?

Knowledge is evolving regarding the importance of the superior labrum in shoulder function and dysfunction. Biomechanical and clinical studies are defining the role of the labrum in shoulder joint function and instability, and guidelines for the diagnosis and the treatment of disorders are emerging. There is a positive association between clinically important, symptomatic labral tears requiring treatment and alterations in labral anatomy. The diagnosis is based on the patient's history and clinical examination findings that indicate a loss of labral function. Labral injury can be confirmed with imaging studies and characterized by arthroscopic studies if surgery is necessary. Emerging data suggest that guided rehabilitation can achieve asymptomatic shoulder function in up to 50% of patients with clinically important labral injuries. Surgical treatment, if necessary, should address all aspects of the labral anatomy so that all the roles of the labrum in shoulder stability are restored.