At the time of the rst author, Tian, started the surgical clini­cal practice in 1950, patients with ankylosing spondylitis kyphosis or tuberculous kyphosis were always refused— because there was no good treatment method for their dis­ease—as “Incurable disease,” just launched outside the door. But deep in my heart I always feel unspeakable, can it be said that such obvious spinal deformity is not the object of treat­ment by our surgeons? Seeing the “incurable disease” as a shame of our surgeons, lurking in my heart until the late 1950s, prompted me to work on osteotomy to correct spinal deformities. First, I used pig bones or dog bones to experi­ment and found that the pig and dog bones were too hard and strong. Later, the experimental study of the thin scalpel on the fresh corpse conrmed that the osteotomy with the thin­edged osteotome can achieve free slicing, no vibration, and no resistance. At the same time, it can produce a neat cut surface, which is convenient for bone wax to control bleed­ing. In the late 1950s, many experimental studies and animal experiments were performed for the application of thin­edged osteotomes for spinal osteotomy, which laid a solid foundation for future clinical applications. In 1961, patients with ankylosing spondylitis kyphosis were treated with sim­ple laminar osteotomy, which achieved remarkable results. Since then, the use of thin-edged bone cutters for lamina osteotomy begun. The technique at that time was similar to that of Smith Petersen’s lamina osteotomy, but the surgical procedure was completely different from that of Smith Petersen. We used a sharp thin-edged osteotome to cut the lamina and without internal xation. Postoperatively, the

Spinal surgery is full of difculty and risk, especially for spi­nal osteotomy procedures. It can cause hemorrhagic shock due to large blood loss during surgery, or it can cause life­long paralysis or nerve damage due to damage to the spinal cord and nerve roots. The incidence of early or late postop­erative complications is high, making it difcult for doctors to completely eliminate them. Experienced doctors can only prevent the occurrence of serious complications, detect com­plications early, and make response early. The common rea­sons for the mistakes are: (1) improper clinical thinking methods; (2) lack of professional knowledge; and (3) improper surgical methods and poor surgical skills. Firstly, surgeons who only understand the surgical methods and pro­cedures do not have the qualications to perform the opera­tion independently. They must have a pure anatomical concept and biomechanical point of view. It is also necessary to have all aspects of the whole process of surgical treatment and prevent accidents and rescue measures in order to com­plete the task of spinal osteotomy independently. Doctors doing spinal osteotomy should deal with the anatomical knowledge of the spine and spinal cord and form a clear con­cept in the brain. In any anatomical abnormality or defor­mity, the position can be correctly judged and recognized without losing direction. Secondly, the selection and use of the osteotomy tools should be applied clinically after train­ing on the corpse or in the animal laboratory to achieve mas­tery. Both rongeur and grinding are not a substitute for Osteotomes. Osteotomy with an osteotome is the basic skill