Resultados de la artroplastia total de rodilla en pacientes obesos (Ing.)

Methods: Clinical and radiographic data on seventy-eight total knee arthroplasties in sixty-eight obese patients were compared with data on a matched group of nonobese patients. The analysis was also performed after stratification of the obese group for the degree of obesity. All patients had the same prosthesis. The clinical data that were analyzed included the Knee Society objective and functional scores, patellofemoral symptoms, activity level, and complications.

Results: The percentage of knees with a Knee Society score of 80 points at an average of eighty months was 88% in the obese group, which was significantly lower than the 99% rate in the nonobese group at the same time. The morbidly obese subgroup had a significantly higher revision rate than did the nonobese group (p = 0.02).

Conclusions: The results of the present study suggest that any degree of obesity, defined as a body mass index of 30, has a negative effect on the outcome of total knee replacement.