Aim: To assess the knowledge and of elderly patients regarding Osteoarthritis (OA).Sample and setting: Consecutive sample of 55elderly patients attending the rheumatology and rehabilitation outpatient clinic of Al-Qasr Al-Aini Hospital were included in the studyTools:two tools were used, first a structured sociodemographic tool, Second, a customized version of the Osteoarthritis Knowledge Questionnaire (PKQ-OA) was employed..Statistics:Pearson's correlation coefficient was used to examine relationships between the PKQ-OA mean score and personal data. Analysis of variance was used to determine the differences between demographic, clinical, and socioeconomic variables (ANOVA).Results: A total of 55 OA elderly were included and fitted to the study. The mean PKQ -OA score was 15.48 ± 4.05,a maximumof 30. Average ratings were found in all domains, however the combined protection/energy conservation domain had the lowest.. PKQ-OA showed a negative correlation with age (r =-0.63) and a positive correlation with the level of education(r = 0.05). The PKQ-OA showed no correlation with gender, but PKQ-OA increases in married elderly and diploma elderly. Conclusion: The elderly with OA had average disease-related knowledge level.Recommendation: Based on thecurrent study's findings, it was recommended to conduct training programs for elderly patients with OA to improve their knowledge of the disease, resulting in better disease control. [ABSTRACT FROM AUTHOR]