femur polar moment of inertia femoral neck polar moment of inertia 2013-06-27T18:09:48Z A calculated geometric property of a cross section of the femoral neck, the heavy, flattened, pyramidal process of bone connecting the head and the shaft of the femur, the major bone in the upper portion of the hindlimb of quadrupeds or the lower limb of bipeds. It is a measure of the distribution of material around a given axis and is related to the inherent rotational stiffness of the bone around that axis. Bone is the hard, rigid form of connective tissue constituting most of the skeleton of vertebrates and composed chiefly of calcium salts. CMO:0001670 JSmith clinical_measurement_ontology femoral neck Ip femoral neck area moment of inertia femoral neck cross-sectional moment of inertia femur neck moment of inertia calculated femoral neck cross-sectional area