malnutrition diagnosis in outpatients with knee osteoarthritis: a hospital-based case-control study in iranian population

Background and objectives: knee osteoarthritis is a musculoskeletal disorder. in this case-control study, associations of knee osteoarthritis outcomes with nutritional status were assessed in patients with knee osteoarthritis and non-knee osteoarthritis participants.materials and methods: mini-nutritional assessment questionnaire was used to assess the nutritional status. osteoarthritis outcome score-patellofemoral questionnaire was used to assess the pain, stiffness and quality of life score associated with knee osteoarthritis.results: patients with knee osteoarthritis showed higher malnutrition index scores (p = 0.001) and malnutrition rates (10% against 2%, p = 0.003) than those non-knee osteoarthritis participants did. in knee osteoarthritis patients, a significant positive association was detected between the scores of the malnutrition index and the quality of life subscale (p = 0.036; r = 0.297; ci: 0.045, 0.549). patients with normal nutritional status were at lower risks of knee osteoarthritis than those malnourished participants were after adjusting for age, sex and body mass index (p = 0.019).conclusions: regarding increasing prevalence of knee osteoarthritis and malnutrition, especially in the elderly population, a preventive assessment for knee osteoarthritis includes further attentions to the nutritional status of this population.