Duchenne muscular dystrophy (DMD) and Becker (BMD) are dystrophinopathies, a group of dystrophies caused by mutations in the dystrophin gene. is most common that occurs children. A mutation DMD gene leads to loss expression protein, subsarcolemmal protein provides strength, stability, functionality myofibrils. Patients with dystrophinopathies basic progressive weakness musculoskeletal system de...