Multi-parametric Imaging of the Knee in Obese Patients With Knee Osteoarthritis Following a Significant Weight Loss, Investigating the Impact on Inflammation (A Substudy to "Effect of Liraglutide on Body Weight and Pain in Overweight or Obese Patients With Knee Osteoarthritis: A Randomised, Double Blind, Placebo-controlled, Parallel Group, Single-centre Trial" (NCT02905864)

This is a substudy to a randomised trial investigating the effect of liraglutide on body weight and pain in overweight or obese patients with knee osteoarthritis (NCT02905864). In the parent trial, patients will be subjected to an 8-week diet intervention phase including a low-calorie diet and dietetic counseling, after which. Patients will be randomised to receive either liraglutide 3 mg or liraglutide 3 mg placebo as an add-on to dietetic guidance on re-introducing regular foods and a focus on continued motivation to engage in a healthy lifestyle.

This substudy aims to investigate any changes in MRI associated with the initial 8-week weight loss intervention, and the value of CT scans in predicting the effect of weight loss.