SAN FRANCISCO 2008 – Although obese patients have an increased risk of complications, they derive the same subjective functional outcomes from total knee arthroplasty as patients of normal body mass index, according to a study presented here at the 54th Annual Meeting of the Orthopaedic Research Society.
“Collectively, these results suggest that, when assessed from that patient’s perspective, total knee arthroplasty (TKA) provides similar subjective and functional benefits regardless of BMI,” said Matthew D. Driscoll, MD. “This information must be factored into the decision of whether or not to provide knee replacements for obese patients.”
…However, “While patients’ assessment of functional outcomes appears to be similar regardless of BMI, there were two areas in which obese and morbidly obese patients faired considerably worse than normal-weight patients,” Driscoll noted.
“Increased BMI was significantly correlated with increases in perceived swelling and stiffness. Thus, knee replacement in obese patients is not without some subjective complications, even in satisfied and functionally proficient obese patients,” he said.