Numbness in the hand after wrist fracture may be caused by the following reasons: 1. There may be damage to the nerve when the hand is fractured, which may show numbness or pain in the hand before surgery, and the pain may be heavy before surgery, which may mask the numbness in the hand. 2. For soft tissue pulling during the surgery, it may cause edema of the nerve as well as side damage to the nerve, which may also lead to numbness in the hand after surgery. 3. The process may produce damage to the nerve, such as burns from the electric knife or strains from the instrument. If this happens, it will also lead to numbness of the hand after surgery. Therefore, hand numbness should be analyzed on a case-by-case basis, but in general, numbness of the hand means that the nerves in the hand have been damaged or stretched and other signs of trauma.