True or False: The goal of the screw is to keep the humeral head centered on the glenoid.

The statement is true because one of the primary objectives of using a screw in total shoulder arthroplasty is to ensure proper alignment and stability of the humeral head with respect to the glenoid. Maintaining this centering is crucial for optimizing joint function and reducing the risk of complications such as dislocation or post-operative instability.

During the procedure, the screw aids in anchoring the components securely, allowing for an effective load transfer between the humeral head and the glenoid. This centering ensures that the natural biomechanics of the shoulder are preserved as much as possible, which is vital for patient recovery and overall satisfaction with the surgical outcome.