Fig. 5.

a) Area Under the Curve (AUC) from Receiver Operating Characteristic analysis for the ability of age, height, Femoral neck (Fn) and Total Hip (Th) DXA-like areal Bone Mineral Density (aBMD) from CT to correctly categorise hip fracture types (grey lines- dotted for TR or dashed for FN) as well as all hip fractures (black solid lines-ALL HIP FX). ROC analysis for different combinations of the novel 3D Cortical Bone Mapping (CBM) measures to correctly discriminate hip fractures (5b–d). An average single measure of 3D Cortical Mass Surface Density or Trabecular Density (ECTD) was taken for each patient from the bone mapping ROIs (shown as patches in Fig. 3c–f). The ability of age, height and an average 3D measure of either CMSD (5b), ECTD (5c) or both CMSD and ECTD (5d) to correctly discriminate fractures, as well as the corresponding AUC values and 95% confidence intervals for discriminating all fractures (ALL FX), Trochanteric fractures (TR) and Femoral neck (FN) are shown.