In episode 5 of season 5 of Inside the Science we’re highlighting the study, “Efficacy of Exercise Intervention as Determined by the McKenzie System of Mechanical Diagnosis and Therapy for Knee Osteoarthritis; A RCT” with Mr. Richard Rosedale. He shares some specifics of the methods important to understand, the operational definition of directional preference in this paper, the most important data he’d suggest we take from the results like the effect size, the clinical implications for patients with knee osteoarthritis and his big takeaways.