IMPACT OF OBESITY ON FUNCTIONAL STATUS IN PRIMARY KNEE OSTEOARTHRITIS

Abstract

To find out is there any difference in functional status (self reported as well as actual) among various BMI categories in non-radiographic knee osteoarthritis individuals; and to see the correlation between Body Mass Index and six minute walking test , subscales of Knee injury and Osteoarthritis Outcome Score. Present study was a cross sectional survey involving 274 subjects aged between 41-79 years (mean 58.76yrs) with primary knee joint OA. After passing inclusion criteria, following measurements were taken: age, sex, body weight, height, 6 MWT, self reported KOOS. Data was analyzed using one way Analysis of variance, Pearson correlation, and linear regression tests. Results shows there is a significant difference in 6 MWT and all KOOS subscales (p <0.001) among different BMI groups. There is a significant negative correlation of 6 MWT (r -0.86) and all sub scales of KOOS (r ranges -0.52 for ADL to -0.82 for Quality of Life, p <0.001) with BMI. Results indicate decreased functional status as the BMI increases that may be related to pain and symptoms of knee OA individuals.