There is no fixed age limit for corrective surgery for knock knees. The surgical technique used may vary depending on age. Children can take advantage of their remaining growth to guide the bones straighter with minor surgery. Adults can benefit from osteotomy surgery on the knee to obtain a correction. Patients over sixty years of age may receive a different type of osteotomy than younger patients to ensure timely healing. Older patients with arthritis will often receive a knee replacement to treat both problems.