Following reverse shoulder arthroplasty, individuals typically experience restricted range of motion compared to a healthy shoulder or even a shoulder after traditional replacement. This primarily affects internal rotation (reaching behind the back), external rotation (rotating the arm outward), and elevation (raising the arm overhead). Activities requiring these movements, such as fastening a bra, reaching a high shelf, or throwing a ball, may present a significant challenge.
These constraints stem from alterations in shoulder mechanics and the reliance on different muscle groups for function. The procedure reconfigures the joint, shifting the center of rotation and placing increased demand on the deltoid muscle for elevation. While this design effectively eliminates pain related to rotator cuff deficiency, it inherently reduces the natural flexibility and strength of the joint. Understanding these factors is crucial for realistic expectations and appropriate rehabilitation.
