Numbness and pain after lumbar steel nail surgery is normally a normal phenomenon, but it can’t be excluded that it is caused by postoperative nerve edema, wound infection and so on, and the specific treatment needs to be chosen according to the cause of the disease. 1. Normal phenomenon: after lumbar steel nail internal fixation surgery, not fully recovered, there may be lumbar steel nail postoperative numbness and pain symptoms. It is a normal reaction after steel nail surgery. It may be related to the reaction to anesthesia. With the disappearance of anesthesia reaction, the numbness and pain can be recovered after a period of time. 2. Postoperative nerve edema: need bed rest, avoid lower limb activities, so as not to aggravate the phenomenon of edema. You can choose to use mannitol injection, dexamethasone injection and other anti-swelling drugs under the guidance of professional physicians, and in serious cases, you can cooperate with methylcobalamin tablets for treatment. 3. Wound infection: If the wound is infected due to improper treatment during the recovery process, it may cause numbness and pain after lumbar spinal nail surgery, you should go to the hospital in time for wound treatment, and you can choose to use mupirocin ointment, chlorhexidine solution and other drugs under the guidance of a professional physician for treatment. When uncomfortable symptoms, it is recommended to go to the hospital for examination and diagnosis in a timely manner, under the guidance of a professional physician to carry out targeted treatment, so as not to have an impact on the health of the body, is not conducive to the recovery of the condition.