Medically reviewed by Isabel Casimiro, MD, PhD Fact checked by Jillian Dara The lumbar spine includes the five vertebrae in ...

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

The spine (aka backbone) is a linked column of bones running from ... There are 12 thoracic vertebrae in the thoracic region. There are 5 lumbar vertebrae in the lumbar region. There are 5 sacral ...

Doctors use the American Spinal Injury Association (ASIA ... Sensory but not motor function is preserved below the neurological level and includes the sacral segments S4-S5 (light touch, pin prick at ...

The lumbar spine related hamstring is considered to be an injury that ... but would involve far more surgical trauma of muscles and probably bone (the sacral ala). It remains to be seen whether it ...