Fig. 5 A-C.

(A) AP pelvis of a 21-year-old woman with a deep hip (LCE angle = 42°) and a cam deformity is shown. (B) Manual 3-D analysis is shown with dGEMRIC indices color-coded. (C) Automated 3-D analysis is shown with dGEMRIC indices color-coded. The red indicates regions of low dGEMRIC indices demonstrating low glycosaminoglycan content corresponding to biochemical cartilage damage and vice-versa for blue color. (B) Using the manual 3D analysis, the mean dGEMRIC index was 482 ms and cartilage surface area was 2128 mm². This was comparable to (C) the automated 3-D analysis which yielded a mean dGEMRIC index of 489 ms and a cartilage surface of 1912 mm². (B) Overestimation of the manual 3-D analysis (Table 3) for measuring thickness in the anterioinferior quadrant resulted in a difference of 0.8 mm compared to the automated 3-D analysis.