Musculoskeletal System: The musculoskeletal system includes bones, muscles, tendons, ligaments, and joints, providing structure, movement, and stability to the body. Injuries & Illnesses: Osteoporosis, fractures, sprains, strains, musculoskeletal disorders, back pain. Specialists: Orthopedic surgeons, rheumatologists, physical therapists, physiatrists. Procedures & Therapies: Physical therapy, bone density tests, joint injections, musculoskeletal ultrasound, surgery (fracture repair, joint replacement).