Whether the L3 vertebra fracture is serious or not needs to be judged according to the presence or absence of compression of the spinal canal and the combination of clinical symptoms. L3 vertebra is the third lumbar vertebra, which is located in the lower part, in the part of cauda equina, if the patient does not have sensory impairment of the lower limbs after the fracture, motor disorder, indicating that the fracture damage is relatively stable, and does not compress the nerve, in this case, conservative treatment or surgical immobilization can be treated. If after the vertebral fracture, there is numbness of the lower limbs, lower limb weakness and limb paralysis symptoms, and perineum numbness, incontinence, this situation is typical of cauda equina syndrome, more serious, the need for timely surgical decompression of the compressed cauda equina. After the vertebral fracture should be timely medical treatment, clear diagnosis, for treatment.