For elderly osteoarthritis of the knee with unsatisfactory results of conservative treatment, joint replacement is the classical and efficacious surgical method, but some patients cannot receive joint replacement for physical reasons, or for economic reasons. There is a new surgical procedure, partial resection of the fibula, which is effective in 70-80% of patients. A few days ago, the Department of Orthopedic Surgery performed a bilateral partial fibulotomy on a 79-year-old female patient, and the patient’s knee pain was significantly reduced after the surgery. This procedure is less invasive, has a faster recovery, and is less expensive, providing another option for patients with osteoarthritis of the knee. However, long-term results require long-term follow-up. If the results are not satisfactory, joint replacement surgery can be performed again.