A physiatrist is a physician who has completed a specialty training in Rehabilitation Medicine. Physiatrists specialize in restoring optimal function and quality of life and overcome disabilities for people with injuries to the musculoskeletal system (muscles, bones, tendons, ligaments, cartilage, meniscus, and other joint structures); neurological system (brain, spinal cord, cranial nerves, spinal nerves, and autonomic nerves); and cardiopulmonary and renal system (heart, lungs and kidneys), among other human body systems.