Medically reviewed by Brigid Dwyer, MD The lumbosacral joint, also called L5-S1, is a term used to describe a part of the ...

The lumbar region is located between the thoracic (chest) region of the spine and the sacrum, a large bone at ... of the vertebra to form canals for nerves, joints for stability, and attachment ...

Low back pain is one of the most common reasons patients see primary care doctors. To understand this condition, it’s ...