Effects of tilt and glenosphere eccentricity on baseplate/bone interface forces in a computational model, validated by a mechanical model, of reverse shoulder arthroplasty (original) (raw)

This study investigates the forces at the baseplate-bone interface in reverse shoulder arthroplasty, focusing on various glenosphere configurations (concentric and eccentric) and baseplate tilts (inferior, neutral, superior). A validated computational model was employed to assess the distribution of forces during glenohumeral abduction. Findings indicate that inferior tilting optimizes force distribution for concentric and lateral offset glenospheres, but may have adverse effects for inferiorly offset ones, suggesting the need for careful consideration of tilt angles based on glenosphere type.