True or False: When the humeral head is not positioned anatomically, the likelihood of glenoid removal increases significantly.

The statement is true because when the humeral head is not positioned anatomically, it can lead to malalignment of the shoulder joint, which compromises the overall biomechanics and stability of the joint. This malpositioning may cause abnormal wear and tear on the glenoid or lead to instability, which could necessitate glenoid removal or revision.

Proper alignment is critical during total shoulder arthroplasty procedures to ensure that the joint functions optimally post-surgery. If the humeral head is improperly positioned, it may exert uneven forces on the glenoid component, increasing the risk of failure or complications, which could ultimately result in the need for glenoid revision or removal. Thus, the relationship between the anatomical positioning of the humeral head and the integrity of the glenoid component is significant, substantiating the answer that glenoid removal's likelihood increases when appropriate positioning is not achieved.