In general, if you are still numb a year and a half after a hand cut, you may have nerve damage. After a hand cut, the ulnar nerve, median nerve and radial nerve may be damaged. The three nerves respectively innervate various areas of the hand, if the cut, nerve damage is not treated in time, resulting in the nerve does not recover in time, it will cause numbness of the hand symptoms persist, and in serious cases, even deformity of the hand. In addition, the fingers are distributed on the finger side of the lateral nerve, easy to be cut, resulting in numbness of the fingers on the same side. If there are still symptoms of numbness a year and a half after the cut, it is recommended to use nerve-nourishing drugs, such as methylcobalamin, vitamin B1 tablets, etc., supplemented by physical therapy, etc., under the guidance of a doctor. If the symptoms described, it is recommended to go to the regular hospital in time, early treatment.