spinal canal stenosis. lumbar vertebra with intervertebral disc and herniated nucleus pulposus,

anatomical anatomy annulus artwork back backage backbone background blue bulging canal care damage degeneration diagnosis diagram disability disc disease doc exercise graphic hernia herniated illustration injuries intervertebral lower lumbar medical medicine nerve neurological neurologist nucleus operation osteoarthritic pain physical physiology pinched prolapse prolapsed pulposus ruptured sciatica slipped spinal spine spondylosis stenosis therapy treatment vertebra vertebraln