Definitions for "Lumbar Vertebrae"
The lumbar vertebrae are the five bones of the backbone that are situated between the thoracic vertebrae and the sacrum in the lower part of the back. They are the largest of the unfused vertebrae and have stout processes for attachment of the strong muscles of the lower back.
The last five bones on the lower back above the base of the spine.
Five vertebrae of the lower back that articulate with the sacrum to form the lumbosacral joint.