has part has part has_part characteristic of abnormal lumbar vertebrae morphology decreased bone mineral density of presacral vertebrae decreased bone mineral density of lumbar vertebrae reduction in the quantitative measurement value of mineral content of bone in any of the bony segments of the spine located anterior to the sacral vertebrae and posterior to the thoracic vertebrae MPheno.ontology decreased lumbar vertebrae bone mineral density reduced BMD of lumbar vertebrae MP:0021190 lumbar vertebra