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Obesity takes heavy toll on knee arthritis
Date:2/13/2011

eplacement (TJR) patients may increase for "super-obese" patients.

This study compared the outcomes after TJR in 137 "super-obese" patients versus 63 non-obese patients.

Ran Schwarzkopf, MD, 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. Among "super-obese" patients, each 5-unit increase in BMI over 45 was associated with a statistically significant increased risk of having in-hospital and post-operative outpatient complications or readmission. Also, days to discharge were found to increase by almost 14 percent for each 5-unit increase in BMI over 45.

The second study analyzed complication rates for morbidly obese patients (BMI greater than 40) after TJR. The study reviewed data from 12,355 patients and compared complication rates in morbidly-obese patients versus normal-weight patients.

Led by Richard J. Friedman, MD, FRCSC, co-investigator and Chairman, Department of Orthopaedic Surgery, Roper Hospital, Charleston, SC, the study found that morbid obesity contributed to a significantly higher incidence of complications such as redness around the surgical wound, swelling of the legs, bacterial infections, respiratory disorders, neurologic and gastrointestinal complications and cardiac arrhythmias following total hip and knee replacements. Study abstract. (Embargo: February 18)

Will Isolated Weight Loss Improve Knee Pain and Movement? (Embargo: February 15)

Another new study released today analyzed the effects of isolated weight loss via bariatric surgery on knee osteoarthritis. The study involved 24 obese patients with knee osteoarthritis who were scheduled to undergo bariatric surgery. Patient weights and knee symptoms were recorded before the surgery and 6 and 12 months after surgery. Patients were not prescribed exercise or
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Contact: Kristina Goel
goel@aaos.org
847-384-4034
American Academy of Orthopaedic Surgeons
Source:Eurekalert

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