Evaluating the effect of obesity on total knee arthroplasty: A longitudinal study

Objectives: to evaluate the effect of obesity on total knee arthroplasty,and on patient-reported outcomes. methods: the longitudinal study was conducted from september 2013 to august 2015 at the second hospital of jinlin university,changchun,jinlin,china,a tertiary hospital. using universal sampling method,all patients who underwent elective total knee arthroplasty were included in the study. data was collected using a semi-structured questionnaire,oxford knee score,and short form 12 questionnaire. spss 19 was used for statistical analysis. results: of the 183 patients,104(57%) were obese and 79(43%) were non-obese. themean age was 63.7 � 8.4 years and 65.0 � 8.8 years in obese and normal patients respectively (p=0.31). a statistically significant association was observed with regard to oxford knee score in both groups of patients (p<0.05). overall,7(8.9%) patients from the non-obese category and 23(22.1%) from the obese category presented with local complications,while another 7(3.8%) patients had to undergo a revised surgery. conclusion: it is very important to equate the outcomes of the surgery in obese and normal individuals. � 2017,pakistan medical association. all rights reserved.