The phenomenon of thinning of the leg at the fracture is mostly caused by muscle atrophy. Once the phenomenon of muscle atrophy after fracture occurs, you should promptly carry out functional exercises for local muscles, for example, for muscle atrophy of the thigh, you must carry out the action of bending the hip joint and straightening the knee joint, which can exercise the muscles on the front side of the thigh. The back extension of the thigh and the bending of the knee joint can exercise the muscles of the back of the thigh. Other actions such as lateral limb elevation of the thigh and stretching and relaxing of the thigh muscles can improve local circulation and promote the disappearance of muscle atrophy symptoms. If the symptoms of muscle atrophy appear in the lower leg, timely exercise of the ankle joint and appropriate soft tissue manipulation, acupuncture treatment, together with appropriate electrotherapy, are needed to effectively relieve the muscle atrophy. In particular, medium-frequency electrotherapy and high-frequency electrotherapy have a better effect on muscle atrophy.