Muscular Atrophy

**Definition:** Derangement in size and number of muscle fibers occurring with aging, reduction in blood supply, or following immobilization, prolonged weightlessness, malnutrition, and particularly in denervation.

**Tree numbers:** - C10.597.613.612 - C23.300.070.500 - C23.888.592.608.612

**Synonyms:** - Atrophy, Muscle