Kellgren-Lawrence Grading — SCE Rheumatology MCQ

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HardOsteoarthritisKellgren-Lawrence GradingSCE Rheumatology

A knee radiograph shows multiple osteophytes, definite joint-space narrowing, subchondral sclerosis and possible bony contour deformity. Which Kellgren–Lawrence grade is described?

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Correct answer: C — Grade 3 osteoarthritis

Kellgren–Lawrence grade 3 denotes multiple osteophytes with definite joint-space narrowing, some sclerosis and possible bony deformity. Grade 4 has marked narrowing, severe sclerosis and definite deformity.

Reference: Radiographic definition and reliability of Kellgren–Lawrence osteoarthritis grades (Published 2016): https://pmc.ncbi.nlm.nih.gov/articles/PMC4925407/; EULAR recommendations for imaging in peripheral joint osteoarthritis (Published 2017): https://ard.bmj.com/content/76/9/1484