The lumbar spine, or 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 equivalent of the low back which starts where the thoracic spine ends and goes down to the tailbone area There are usually five lumbar vertebrae (L1 thru L5)
The 5 weight bearing vertebrae that are located between the thoracic vertebrae and the lumbosacral area