The lumbar spine rests upon the sacrum. The place where they meet is ... Understanding the basic anatomy of the five lumbar bones that make up your low back can help you get the right treatment ...

There are 5 lumbar vertebrae in the lumbar region. There are 5 sacral vertebrae, which are fused as one bone and known as the sacrum, in the sacral region. There are 3 to 5 coccygeal vertebrae, which ...

L5-S1 is the exact spot where the lumbar spine ends and the sacral spine begins. The lumbosacral joint connects these bones.