Recent advances in disease-modifying treatment of osteoarthritis are renewing interest in radiographic imaging to assess disease progression and treatment efficacy. Plain-film radiography has been the mainstay of osteoarthritis evaluation; however, plain film changes of osteoarthritis appear late in the progression of the disease. An alternative, magnetic resonance (MR) imaging, is superior to plain film in its soft-tissue contrast and resolution. Early or subtle changes of osteoarthritis in articular joints are detectable using MR imaging.
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