bone polar moment of inertia 2013-05-07T18:08:40Z A calculated geometric property of a cross section of a bone which expresses the inherent rotational stiffness of the bone. 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:0001558 JSmith bone Ip bone area moment of inertia bone cross-sectional moment of inertia clinical_measurement_ontology calculated bone cross-sectional area measurement