Washington: New studies have been presented at the 2011 Annual Meeting of the American Academy of Orthopaedic Surgeons (AAOS) to look at the effect that obesity has on knee arthritis and a patient``s ability to recover from knee surgery.One new study found that while weight loss via bariatric surgery may improve knee pain in obese patients with knee osteoarthritis, there may be permanent damage to the knee from being morbidly obese.Also, two new studies released today examine whether obesity contributes to greater complications after hip and knee replacement surgery. The first study considers patients in the "super obese" category who have a body mass index (BMI) greater than 45. Ran Schwarzkopf, co-investigator and chief resident, New York University Hospital for Joint Diseases, and his research team found that the number of overall complications were significantly higher for the "super-obese" compared to non-obese.
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