Osteoarthritis (OA) is the most common form of chronic arthritis in the Australian population, with approximately 10% of people complaining of symptomatic OA. Osteoarthritis is a heterogeneous disease with variable degrees of cartilage loss, osteophyte formation, muscle weakness, meniscal damage, synovial inflammation, ligamentous laxity and subchondral bone changes. Treatment is aimed at symptom management, preservation of joint function, and improving quality of life. As a common chronic disease leading to significant morbidity, GP registrars need to develop a patient-centred and evidence-based approach to managing OA.