with a defect or fracture of one or both of the wing-shaped parts of a vertebra
(spondylolysis), which may allow a vertebra to slide
forward or backward over the bone below, sometimes squeezing the spinal cord or
a nerve root. This slipping, called spondylolisthesis, usually happens at the
base of the spine.
Have an abnormally narrow spinal canal, which
may be inherited or may develop in curvature of the spine (scoliosis).
genetic (inherited) disorder in which the bones of the
arms and legs do not grow to normal size and the vertebrae of the spine do not
grow normally (achondroplastic dwarfism).
Have had lower back
surgery, which may cause swelling that puts pressure on the spinal nerves.
Progressive spinal stenosis may occur, even after successful back