The spine, or backbone, is the body's central support structure. It connects different parts of the musculoskeletal system. The spine helps you sit, stand, walk, twist and bend. Back injuries, spinal cord conditions, and other problems can damage the spine and cause back pain. The spine is a complex structure of small bones (vertebrae), cushioning disks, nerves, joints, ligaments, and muscles. This part of your anatomy is susceptible to injury, arthritis, herniated disks, pinched nerves, and other issues. Back pain can affect your ability to enjoy life. Your healthcare provider can help ease back pain and offer suggestions to strengthen the muscles that support your back and prevent back injuries.