Calf stretching for 22 days, leg belly and foot still numb may be related to the lower extremity edema, lumbar disc herniation, nerve injury has not yet recovered. 1. Lower extremity edema: if the postoperative patient stretching after surgery, numbness of the legs and feet, may be related to the postoperative recovery period of edema, edema compression of the local peripheral nerves, can appear in the legs and feet of the symptoms. 2. Lumbar disc herniation: If patients do not undergo surgery and other treatments, most of the symptoms of numbness in the legs and feet that occur spontaneously are related to the lumbar disc herniation that presses on the nerves, and the lumbar disc herniation that presses on the nerves will lead to numbness and weakness along the innervated area. 3. Nerve damage has not yet recovered: if the patient’s preoperative injury is relatively heavy, the symptoms of numbness in the legs and feet have already appeared before the surgery, and the above symptoms still exist after the surgery, it is generally due to the nerve damage that has not yet recovered, and the recovery period may take 3~6 months or even longer. If the numbness is not relieved or is accompanied by other symptoms, the patient should go to the hospital in time, and the cause should be clarified and targeted treatment should be given.