"The term early osteoarthritis of the knee has been proposed and has been defined as meeting three main criteria 9:"
"Kellgren-Lawrence grade 2 or less on radiographs"
"Kellgren and Lawrence system"
"The initial study of any patient with suspicion of knee osteoarthritis should include a Rosenberg view, a PA radiograph with weight-bearing and 45 degrees of flexion, which is more sensitive to detect joint space narrowing 5."
Expected headings
"Grading"