Skip to main content
. Author manuscript; available in PMC: 2015 May 1.
Published in final edited form as: J Shoulder Elbow Surg. 2013 Dec 2;23(5):708–719. doi: 10.1016/j.jse.2013.08.014

Figure 2. Defining points of interest.

Figure 2

A: The humeral head cut-off point (Pcut, metaphyseal junction) was identified by an isolated 2 mm thick section of the center (anterior-posterior) of the medial humerus. The fitting section (“medial head region for the best fit circle”) was defined as the section medial to the most superior humeral point and just inferior to the visually determined inflection point between the head and shaft. Pcut was defined as the location where the best-fit circle to the fitting section intersected the fitting section on the inferior medial side. B: The medial and lateral epicondyle points (Mepi and Lepi) were defined as the most medial and lateral points of the elbow epicondylar axis. C& D The greater and lesser tuberosity points (GT and LT) were defined by establishing an XZ-plane (sagittal plane) and then translating and rotating (about the superior-inferior axis) the plane until the plane “cut-off” the sections of the greater and lesser tuberosity that were furthest from the humeral head center. The center of each of these sections was defined as GT and LT. BG (bicipital groove point) was defined as the deepest point in the groove at the average superior-inferior location of GT and LT.