How long a lumbar fracture lasts depends on the extent of the fracture damage. In mild cases, the pain may gradually diminish in about 2 weeks, while in severe cases, the pain may last for 3 to 4 weeks or longer. If the fracture is minor and the fracture is not displaced, the pain usually lasts about 2 weeks and gradually decreases, and bed rest is required for 8 weeks. If it is a comminuted fracture or the fracture is displaced and compresses the spinal cord and nerves, the pain usually takes 3~4 weeks to gradually reduce or even longer, and most of them need to take surgical treatment, incision and reduction internal fixation surgery. Generally, it takes 1 month after the operation before you can go down to the ground. So lumbar spine fracture pain how long according to the degree of injury to decide, if the pain is obvious can be under the guidance of the doctor to apply pain medication, such as ibuprofen extended-release capsules and so on.