Radiographs demonstrating the critical shoulder angle (CSA), which takes into account both lateral acromial overhang and glenoid inclination.
(A) A shoulder with a full-thickness rotator cuff tear and a CSA of 46.1°.
(B) A shoulder with osteoarthritis, an intact rotator cuff, and a CSA of 30.1°.
From: Li X, Olszewski N, Abdul-Rassoul H, et al. Relationship Between the Critical Shoulder Angle and Shoulder Disease. JBJS Rev 2018; 6:e1. DOI:
10.2106/JBJS.RVW.17.00161. Copyright © 2018 The Journal of Bone & Joint Surgery, Inc. Reproduced with permission from Wolters Kluwer Health. Unauthorized reproduction of this material is prohibited.
