lumbar spine herniated disc medical animation

anatomical arthritis back backache backbone body bone cancer cartilage chiropractic cramps disc disease doctor fracture health hernia herniated illness inflammation injury intervertebral joint lower lumbago lumbar medical medicine nerve orthopedic osteoporosis pain patient posture rheumatism sacral sciatica science scoliosis skeleton slipped spinal spine spondylolisthesis spondylosis strain surgery treatment vertebra