Injury to the humerus that results in difficulty abducting the arm with some sensory loss over skin of lateral shoulder is due to: 1. Injury to what nerve? 2. Where is the fracture most likely to have occured? 3. What is the quadrangular space?

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.