Critical Shoulder Angle Controversy

Dear CSS Members and Colleagues:

Christian Gerber has said, “If two people agree one is not a surgeon.” Gerber also gave us the concept of Critical Shoulder Angle (CSA). So, there is a controversy regarding the application of this concept not only to rotator cuff etiology but to effect on healing after repair. There is also a controversy as this relates to shoulder arthroplasty and that is the focus of this communication. Enclosed is one of Gerber’s original articles on the concept of CSA and also three papers which claim or refute an important effect on shoulder arthroplasty. You be the judge. This is an area that deserves some discussion.

Kind Regards

JP Warner, MD

Founder, CSS

Gerber et al

., BJJ, 2013 - Is there an a

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CSA angle and TSA and RCT

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Glenoid component loosening associated w

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