ABSTRACT

Osteoarthritis is a progressive non-inflammatory joint disease that affects particularly cartilage within all structures of the joint. Diagnosis of osteoarthritis is confirmed with clinical and radiological findings. Quantitative radiologic criteria are needed for monitoring the efficacy of treatment. This article discusses the role of plain radiographs using the Kellgren-Lawrence grading system and serial measurement of radiographic joint space width, as well as ultrasonography and magnetic resonance imaging, for evaluating the changes in cartilage and joint structures and clinical progression in osteoarthritis.