Nerve damage in the lower limbs may be related to sprains, strains, crush injuries, fractures caused by trauma, and nerve damage caused by compression of certain diseases. If it is a mild strain or sprain, you can do local cold compress within 48 hours to help reduce swelling, relieve pain and reduce the injury. After more than 48 hours, you can apply topical Fotarine ointment, take vitamin B1, methylcobalamin tablets, etc., try to rest more, and also do local physiotherapy or acupuncture treatment. If severe trauma or fracture causes nerve injury or nerve rupture, incision surgery should be done in time to repair the nerve. If the injury is open and the infection is more serious, local debridement and anti-infection treatment should be done first, and after the wound heals, phase II repair treatment should be done. Nerve injury after conservative treatment, a long time can not recover, you can do surgical repair treatment.