back injury injury to the back may affect the bones (vertebral column including the sacrum, also the ilium or the ribs), muscles and ligaments. Sport-related back injuries include fractures and damage from overuse, especially to the soft tissues. Mechanical and postural causes are common and a significant cause of morbidity in the general population. Damage may be prevented by attention to posture, flexibility, muscle strength and fitness. See also ankylosing spondylitis, intervertebral disc, spinal injury.