New onset, non traumatic low back pain in an older man should raise suspicion for what? 2. What is this suspicion associated with x ray? 3. What serum marker would be worth measuring in this situation?

Your musculoskeletal system includes your bones, cartilage, ligaments, tendons and connective tissues. Your skeleton provides a framework for your muscles and other soft tissues. Together, they support your body's weight, maintain your posture and help you move.