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a) Boundaries for classifying the two main types of hip fracture; femoral neck (FN) and trochanteric (TR), shown on a 3D Bone Map of cortical thickness from a clinical CT scan b) Standard clinical two-dimensional areal bone mineral density (aBMD) measurements of i) the total hip region and ii) the femoral neck region. Approximate boundaries for aBMD measurement used in this study (QCTpro CTXA version 5.1.3, Mindways Software Inc., Austin, Texas).
