Forward slippage of a lumbar vertebra on the vertebra below it.
Spondylolisthesis is a condition in which a vertebra slips forward on the vertebra below it.
In children this normally occurs between the fifth lumbar vertebra and the first sacral vertebra and is often due to a congenital malformation of that region of the spine. Spondylolisthesis may occasionally be associated with bone diseases. Spondylolisthesis may vary from mild to severe. Symptoms may include lower back pain and pain in the thighs and buttocks, stiffness, muscle tightness, and tenderness in the slipped area. Spondylolisthesis Please read this Important notice .