DOS 2018

224 · DOS Abstracts No correlation between the severity of radiographic knee osteoarthritis and the severity of patient reported knee symptoms Mads Bech Reinholdt, Sara Birch, Maiken Stilling, Torben Bæk Hansen Department of Orthopaedic Surgery, Holstebro Hospital; Department of Neurologi og Fysio-ergoterapi, Holstebro Hospital; Department of Orthopaedic Surgery, Aarhus University Hospital Background: Radiographic knee osteoarthritis (RKOA) has been shown to be significantly more prevalent among patients with moderate to severe knee pain and/or severe disability than among patients with no to mild pain and/or lesser disability. However, it is unclear if the severity of RKOA and the severity of clini- cal symptoms correlate. Purpose / Aim of Study: To investigate if the severity of RKOA is correlated to the severity of symptoms reported by patients. Materials and Methods: The study is a first-visit cross-sectional evaluation of a consecutive cohort of 430 patients referred to the knee clinic. Inclusion criteria were knee-OA symptoms (e.g. pain, swelling) and a weight-bearing PA radiograph of the tibiofemoral joint taken within a year of the clinical examina- tion. Prior to clinical examination, all eligible patients were asked to complete the Oxford Knee Score (OKS). The severity of RKOA was graded using the Kellgren-Lawrence Score (KLS). All x-rays were graded by the same observer. 82 patients were excluded: 40 did not meet the inclusion criteria and 42 did not fill out the questionnaire. We used linear regression to evaluate correlation between KLS grade 1-4 and OKS. We used logistic regression analysis to evalu- ate correlation between the presence of pain and the grade of RKOA. Pain was used as a dichotomous variable and defined as present when reported mild to severe(q1 OKS). Findings / Results: 348 patients were included (mean age 65yrs (range 25- 97), 45% men). No significant correlation was found between KLS grade and OKS score. No significant correlation was found between presence of pain and KLS grade. Conclusions: We found no correlation between the severity of RKOA and the severity of patient reported knee symptoms including pain. The findings support that treatment of knee osteoarthritis should not be based solely on the severity of RKOA. 165.