part_of total volumetric bone mineral density compact volumetric bone mineral density 2013-07-29T14:36:18Z CMO:0001730 JSmith Measurement of the mineral mass per unit volume of cortical bone. Bone is the hard, rigid form of connective tissue constituting most of the skeleton of vertebrates and composed chiefly of calcium salts. Cortical or compact bone is the relatively solid type of bone tissue found in the middle of long bones which is a hierarchical composite material consisting of a collagen-hydroxyapatite composite at the lowest level forming a complex network of cylindrical units of laminated bone at the highest level. clinical_measurement_ontology compact vBMD compact volumetric BMD cortical vBMD cortical volumetric BMD volumetric bone mineral density of compact bone volumetric bone mineral density of cortical bone