Figure 2.

The humerus was held by a chuck in the center of a wheel that could be rotated to control the humeral rotation at 90°. Image reproduced with permission from the Mayo Foundation for Medical Education and Research. All rights reserved.

The humerus was held by a chuck in the center of a wheel that could be rotated to control the humeral rotation at 90°. Image reproduced with permission from the Mayo Foundation for Medical Education and Research. All rights reserved.