The cost of surgery for osteonecrosis of the femoral head needs to be determined by the specific form of surgery performed. For the most common conservative surgical treatment of femoral head necrosis, such as hip decompression, the cost of surgery is usually around $10,000, while for other more complex surgical techniques that preserve the femoral head, the cost may be between $10,000 and $20,000. The cost of hip replacement surgery varies depending on the materials used for the surgery. The cost of replacing one side of the hip joint is about RMB 50,000 for a lower-priced hip replacement surgery, while the cost of replacing one side of the hip joint is about RMB 80,000 for a more expensive material. These costs are for regular tertiary care hospitals, and may fluctuate depending on the level of consumption in each region.