Results: We classified 43 of 106 glenoids (41%) as B2. A biconcavity demarcation line between the
paleoglenoid and the neoglenoid was present, on average, from the 1-o’clock to the 7-o’clock position
for a left shoulder. Mean depth of erosion was 4.4 mm, occurring at 114 on a Cartesian coordinate system
for a left shoulder.