Retrolisthesis is a joint dysfunction that occurs when a single vertebra in the back slips backward along or underneath a disc. Retrolisthesis is the opposite of spondylolisthesis, which occurs when a ...
The lumbosacral joint, also called L5-S1, is a term used to describe a part of the spine. L5-S1 is the exact spot where the lumbar spine ends and the sacral spine begins. The lumbosacral joint ...