The cost of unilateral knee inversion surgery for adults is about 30,000 yuan, which can be divided into preoperative cost, intraoperative cost and postoperative cost. The preoperative cost is mainly the cost of preoperative examination, which includes blood index examination, electrocardiogram, radiographs, ultrasound of heart and lower limb blood vessels, and so on. Intraoperative costs include anesthesia fees, surgical fees, and costs of internal fixation consumables (steel plates, steel nails, etc.). Most of the surgical procedures are performed by wedge osteotomy of the tibia or (and) femur, and intraoperative internal fixation materials are generally more expensive. Postoperative costs are mainly for pain relief, anti-infection, anti-coagulation, and medication changes. All of the above costs are about 30,000 RMB, with variations in different regions and hospitals, so it is recommended to go to your local hospital for advice.