Fig. 4

Representative CT-OAM images showing mineral distribution of (A) glenoid, and (B) humeral head. CT-OAM false colour-encoded (black > red > orange > yellow > bright green > dark green > blue > violet, see: [57]) and superimposed on the identical 3-D-reconstructed joint. N points (A) to the most superior point of the glenoid, and (B) to notch in the humeral head formed by the tendon of the long head of biceps. (C, D) A grid was superimposed over the CT-OAM and morphology images to separate the articular surface in quadrants of glenoid (C) and humeral head (D) similar to previous work [57, 58]