Stress fracture ( RID4695 ) scapular spine base
Happens because deltoid is used for abduction of the shoulder in a reverse prosthesis and the deltoid originates from the scapular spine, acromion and distal clavicle. A reverse prosthesis is placed in rotator cuff deficient patient as opposed to a non reverse prosthesis in someone with an intact rotator cuff. Nice article from AJR. See figure 11. [ Article ]
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