has part has part has_part characteristic of abnormal sacral vertebrae morphology increased bone mineral density of vertebrae increased bone mineral density of sacral vertebrae MPheno.ontology elevation in the quantitative measurement value of mineral content of bone in any of the bony segments of the spine located posterior to the lumbar vertebrae and anterior to the caudal vertebrae increased BMD of sacral vertebrae increased sacral vertebrae bone mineral density MP:0021193 sacral vertebra