Fig. 3

Scatterplots showing critical shoulder angles (CSA). CSA and age grouped according to predicted shoulder pathologies including cuff tear arthropathy (CTA, black circles), osteoarthritis (OA, green circles), rotator cuff tear (RCT, purple circles), impingement (IM, orange circles), and tendinitis calcarea (TC, blue circles) of both the development and the external validation cohort. The red lines mark a 58 year old patient with a CSA of 38° and the yellow lines mark a 67 year old patient with a CSA of 28°