Whether a lumbar burst fracture will cause paralysis mainly depends on the severity of the comminution and whether the fracture fragments protrude into the vertebral foramen, compressing the nerves. If it is simply a comminuted fracture and the fragments do not protrude posteriorly and do not compress the nerve roots, then it will not cause paralysis of the lower limbs. However, if the fracture fragments protrude backwards and compress the spinal nerves, or even damage the spinal nerves, the patient may experience complete loss of muscle strength and sensation in both lower limbs. In this case, emergency surgery is required to relieve this compression and reduce the pressure on the nerves, thereby alleviating the symptoms. If lower limb paralysis occurs, long-term oral medication to nourish the nerves is needed to help the nerves gradually recover. Therefore, whether a fracture can cause paralysis mainly depends on whether the nerve is compressed by the fracture fragments. If there is compression, it will result in complete loss of muscle strength and sensation in the patient's lower limbs. (Please take medication under the guidance of a professional physician.)