lumbar spine anatomy. anatomy human body.

abdomen anatomical anatomy annulus apophyseal articular back backbone body bone bones cartilage chiropractic column compression cord degeneration degenerative disc disease disk disorders health healthy herniated human illustration inflammation injury inter intervertebral joint lumbar medical medicine nerve nucleus osteoarthritis osteoporosis pain painful process pulpous root skeletal skeleton spinal spine superior system transverse vertebra vertebrae vertebral waist