Knee replacement surgery cost can vary depending on various factors such as the type of procedure, the hospital or surgical center, and the location. On average, the cost of knee replacement surgery in the US ranges from $20,000 to $60,000. However, this cost may be covered by insurance, Medicare, or Medicaid. It is important to consult with your healthcare provider and insurance company to understand the exact cost and coverage options available to you. Additionally, some hospitals and surgical centers offer financing options or payment plans to help make the procedure more affordable.