Rod myopathy


one of a group of diseases that cause problems with the tone and contraction of skeletal muscles


* Floppy muscles * Thin thighs * Thin upper arms * Weak thighs * Weak upper arms * Weak trunk muscles * Absence of deep tendon reflexes * Impaired muscle tone * Soft muscles * Shoulder weakness * Pelvic girdle weakness


variety of genetic defects, each one affecting one of the filament proteins required for muscle tone and contraction