The subscapularis muscle is the largest and strongest muscle of the rotator cuff. It plays an essential role in the stability and function of the shoulder. Tears of the subscapularis tendon are more frequent than previously estimated. The worldwide use of arthroscopy in rotator cuff surgery has allowed to recognize the true prevalence of subscapularis lesions, as it permits to visualize the articular side where partial tears are usually localized. Subscapularis tears are generally non-traumatic, arising from intrinsic degeneration, subcoracoid and/or anterosuperior impingement.
Longo UG, Berton A, Marinozzi A, Maffulli N, Denaro V. Med Sport Sci. 2012;57:114-21. Epub 2011 Oct 4. PMID: 21986050
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Subscapularis tendon tears. Lyons RP, Green A. J Am Acad Orthop Surg. 2005 Sep;13(5):353-63. Review. PMID: 1614836 PDF Cited by 26
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