A. Advanced technology: Traditional spine surgery is open repositioning, decompression and internal fixation, which requires extensive incision and stripping of the paravertebral muscles, which damages the paravertebral muscles and posterior spinal nerve branches to varying degrees. Minimally invasive percutaneous perforator screw internal fixation technology has the advantages of less intraoperative bleeding, less muscle and soft tissue stripping, light postoperative pain, fast recovery, small incision and scar, short hospital stay, etc., and retains the advantages of satisfactory reset and strong fixation of internal fixation surgery, which enables patients to leave bed early and facilitates rehabilitation training and early return to work. Second, the technology used: C-arm X-ray fluoroscopy under the precise positioning of the arch, make a small incision, percutaneous blunt separation of the muscle, under the X-ray monitoring of the placement of the arch nail, the operation does not need to expose the paravertebral muscles, transverse processes and articular processes, significantly reduce bleeding, protect the muscles and the posterior branch of the spinal nerve, to minimize the side injuries caused by surgery, and then through the instrumentation of fracture reset, or under the channel to complete the minimally invasive The fracture is then repositioned by instrumentation, or minimally invasive interbody fusion is completed under the channel. (1) unstable thoracolumbar fracture; (2) no involvement of the spinal canal or mild displacement of the fracture mass into the spinal canal, with a reduction of the transverse surface of the spinal canal by less than 1/4; (3) no spinal cord or spinal nerve or cauda equina injury; (4) no intervertebral fracture dislocation. (2) Degenerative diseases of the spine: (1) lumbar disc herniation; (2) lumbar spondylolisthesis; (3) lumbar instability; (4) lumbar spinal stenosis. Minimally invasive percutaneous pedicle screw technique for thoracolumbar fractures Minimally invasive lumbar interbody fusion (mini-open TLIF)