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Table 3 X-ray Kellgren-Lawrence (KL) classification of knee OA in both groups pre-operative

From: Does arthroscopic patellar denervation with high tibial osteotomy improve anterior knee pain?

X-ray K.L classification Group A Group B P-value
Degree of O. A count % count %
Grade 0 0 0 0 0 .472 (NS)
Grade 1 2 10 1 5
Grade 2 13 65 10 50
Grade 3 5 25 9 45
Grade 4 0 0 0 0
Total 20 100 20 100