Complex sentence: The MDA Muscle Walk is the Muscular Dystrophy Association's annual walk event to build awareness of muscle diseases that weaken the musculoskeletal system, as well as raise money for research and support of patients and their families.
Split into simpler sentences: The MDA Muscle Walk is the Muscular Dystrophy Association's annual walk event to build awareness of muscle diseases that weaken the musculoskeletal system. This event also raises money for research and support of patients and their families.