The term knee brace or genovarum surgery is called osteotomy In this surgery, by cutting the bone close to the joint, the axis of the bone is corrected Different methods are used to perform this surgery and also different devices are used to fix the place of bone cutting Arch method, open wedge method, closed wedge method are the most common methods of this type of operation Each of these methods has advantages and disadvantages that are beyond the scope of this discussion But surely the best method is the one that can bring the joint closer to the natural anatomy and has the least damage and recovery period.