Kellgren & Lawrence grading in cohort studies:Methodological Update and Implications Illustrated Using Data From a Dutch Hip and Knee Cohort

OBJECTIVE: The Cohort Hip and Cohort Knee (CHECK) is a cohort of middle-aged individuals with hip or knee pain. Radiographs were assigned Kellgren & Lawrence (KL) scores under different conditions at each follow-up visit for 10 years. We aimed to describe and consolidate each scoring approach, then illustrate implications of their use by comparing baseline KL scores assigned using two of these approaches, and evaluating their respective associations with joint replacement and incident radiographic osteoarthritis (ROA). METHODS: We compared baseline KL scores assigned to hips and knees usin... Mehr ...