Lumbar internal fixation surgery generally refers to the internal fixation of the lumbar spine with a nail and rod system. Lumbar endoprosthesis is often used in cases of lumbar spine fracture, lumbar disc herniation, and lumbar spinal stenosis, and is a traditional open surgery. The main method of lumbar endoprosthesis is to drive steel pins into the vertebrae above and below the diseased stage to provide support and immobilization. Currently, lumbar endoprosthesis is a common surgical procedure for lumbar spine disorders. The procedure is often performed under general anesthesia in the prone position. The procedure may also involve decompression of the spinal canal and implant fusion. This type of surgery is suitable for most lumbar spine lesions that require surgery, but because it is an open surgery so it has disadvantages such as high surgical trauma, long time and slow recovery. Therefore, it is still necessary to choose the most suitable treatment for you according to the specific situation after a detailed examination.