At the most recent American Academy of Orthopedic Surgeons’ annual meeting in San Diego, California, in February 2011, there were several papers discussing the pros versus cons of simultaneous bilateral knee replacement. Most authors agree that this is a suitable option in younger, healthier, non-obese patients who have bilateral severe osteoarthritis of the knee. It seems to be contraindicated in patients over 70, obese individuals, and patients with a history of coronary or pulmonary disease. The early rehab is more challenging with bilateral knee replacements and the patient’s rehabilitation is slowed by about two weeks, but the amount of pain is very similar after the second postoperative day, and patients do not have to return for a second knee replacement. Whether or not you would be a suitable candidate is something you would determine with the assistance of your orthopedic surgeon.