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 spine rests upon the sacrum. The place where they meet is called the lumbosacral joint, or L5-S1. The muscles in your lumbar spine work with your abdominal muscles to move your torso ...

The lumbosacral plexus is formed by the ventral branches of the second to fifth lumbar nerves. The lower division of the fourth lumbar nerve joins the fifth, and the lumbosacral trunk thus formed ...

Beginning at the S1 level ... thoracic and lumbar vertebrae is common but more randomized, double-blinded control studies are needed in this area. The sacroiliac joint is a common source of ...