Which of the following head heights is NOT an option for the TSA Univers gleno?

The head heights available for the TSA Univers glenoid system are designed to accommodate a range of anatomical variations and surgical needs. Specific dimensions are selected based on clinical data and anatomical studies to ensure proper fit and function within the shoulder joint.

In this instance, the selection of 23mm as an option that is not available indicates that it falls outside the carefully researched and validated options provided by the system. The 19mm, 21mm, and 18mm head heights are established choices that facilitate optimal alignment, stability, and motion for patients undergoing shoulder arthroplasty. The choice of head height is pivotal in achieving successful postoperative outcomes, as it aligns with the geometry of the glenoid and the patient's unique anatomy.

By maintaining a limited and focused selection of head heights, the system aids surgeons in making more straightforward decisions when planning and executing shoulder arthroplasties, thus enhancing procedural efficiency and patient outcomes.