Numbness in the calf after arthroscopic surgery is a common symptom after surgery and is not something to worry about too much. The condition is mostly due to nerve damage caused by arthroscopy and not fully recovered, with a small probability of nerve damage due to an accident during the procedure. Drug therapy and physical therapy are usually used in clinical practice. Before treatment, it is necessary to first complete the relevant examinations to clarify the cause of the disease, and then carry out the treatment for the cause. 1. If the nerve damage is not fully recovered due to arthroscopy, physical therapy such as hot compress or massage can be used to relieve the stiffness and numbness of the leg. Drug therapy such as oral methylcobalamin tablets or nutrients can also be used. And need to pay more attention to rest, daily can be appropriate to do a little gentle exercise to promote recovery, not to carry out strenuous activities. 2. If there is an accident during the surgery that leads to nerve damage, you need to go to the hospital immediately for review. If the arthroscopic surgery fails, it is usually necessary to repair the surgery again. In addition, it may also be that the patient’s acquired disease is not suitable for knee arthroscopy, at this time, it is necessary to carry out diagnosis again and choose the appropriate treatment program. Numbness of the calf after arthroscopic surgery is mostly a normal phenomenon, if it affects daily life, we should go to the hospital in time to clarify the cause of the disease and follow the doctor’s instructions to standardize the treatment.