There is a possibility that the nail of lumbar internal fixation surgery may loosen. The nail of lumbar internal fixation surgery needs to be rested for three months after the surgery, avoiding bending over, not sitting for a long time or doing tiring work, which may cause the nail to loosen if it is not fully rested after the surgery. If you are an elderly person with osteoporosis, the nail may loosen. After the surgery, review the film once a month to see if there is any displacement or breakage of the nail. If the nail is loosened, the displacement is not big, you need to continue to stay in bed, if there is osteoporosis, you can apply anti-osteoporosis drugs under the guidance of the doctor, such as alendronate sodium and calcium tablets. The nail of lumbar internal fixation surgery may be loosened. After the surgery, recuperation and rehabilitation exercises should be carried out according to the doctor’s instruction.