Shearer J, et al. - In order to assess previously used measures of evaluating knee adiposity, and to ascertain the best measure for predicting both surgical duration and periprosthetic Joint Infection (PJI) following total knee arthroplasty (TKA), researchers conducted a multicentre retrospective review of 4,745 individuals who underwent primary TKA between January 2013 and December 2016. Individual demographic information, surgical duration and post-operative infection status within one-year were collected. To ascertain pre-patellar adipose thickness, bony width of the tibial plateau, and total soft tissue knee width, pre-operative weight-bearing AP and lateral x-rays were investigated. In comparison with BMI, substantial variability was observed in both local measures of adiposity. It was noted that local adipose deposition fluctuates greatly for any given BMI. BMI was found to be a better predictor of PJI following TKA than local measures of knee adipose tissue.