Which legs of the VIP target overhang the glenoid surface?

In Total Shoulder Arthroplasty (TSA), understanding the spatial positioning of the components is crucial for optimizing surgical outcomes and providing stability to the joint. The VIP target refers to the positioning of the glenoid component, which is designed to enhance the range of motion and reduce the risk of dislocation.

The correct option highlights the relationship between the anterior-superior and anterior-inferior legs of the VIP target with the glenoid surface. These legs typically overhang the glenoid to provide adequate coverage and support for the humeral head. The anterior-superior leg is positioned to help prevent inferior and posterior dislocations while also facilitating superior translation during shoulder elevation and rotation. The anterior-inferior leg complements this by providing further stability to the joint and allowing for efficient biomechanical function.

This aspect of the glenoid component design is crucial, as the ability of these legs to overhang supports the joint's integrity, ensuring that the implant remains stable during movement. When the glenoid is optimally positioned with the proper overhang, it can effectively accommodate the dynamic motions of the shoulder, thereby enhancing both mobility and functionality for the patient postoperatively.

In contrast, the other options do not support the same functional benefits or biomechanical stability as the