When muscle atrophy occurs after a fracture, it is important to actively perform joint and muscle functional exercises. At the initial stage of fracture, it is usually necessary to apply a cast or brace brake, at which time muscle isometric functional training, that is, forceful contraction of muscles without moving the joint, can be performed, which can prevent muscle atrophy. If it is clear that there is continuous bone scab passing through the fracture end, the cast can be removed and functional training of joint mobility can be started afterwards. At this time, joint mobility can be increased and joint stiffness can be prevented, while muscle atrophy can be further improved and muscle strength can be increased. In addition, some high-protein foods can be consumed, such as chicken breast, beef and lamb, all of which are beneficial to muscle growth and recovery.