In total shoulder arthroplasty, what is the role of inclination?

In total shoulder arthroplasty, inclination refers to the angle at which the glenoid component of the implant is positioned relative to the plane of the scapula. This angle is critical because it influences the stability of the glenoid implant. A proper inclination helps ensure that forces acting on the shoulder joint are distributed effectively, reducing the risk of implant loosening and dislocation over time.

When the inclination is optimized, it enhances the surface contact between the implant and the bone, providing better stability and support during shoulder movements. An improperly inclined glenoid component can lead to mechanical issues such as increased wear, poor range of motion, and instability of the joint itself. Therefore, understanding and applying the correct inclination in total shoulder arthroplasty is vital for the longevity of the implant and the overall function of the shoulder joint post-surgery.