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Table 11 Correlation between Outerbridge arthroscopic classification of PFJ O.A and outcome in group A

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

Group A Outerbridge arthroscopic classification of PFJ P-value
PFOA grades 1 2 3 4
Mean SD Mean SD Mean SD Mean SD (NS)
Kujala pre-op 36.5 3.5 61.0 19.8 41.3 10.0 38.7 8.0 0.264
Kujala post-op 74.0 4.2 81.0 15.6 74.4 8.0 71.5 7.4 0.593
KOOS pre-op 42.6 1.3 52.7 18.9 41.8 7.9 41.0 9.7 0.483
KOOS post-op 72.9 9.7 75.1 12.7 73.3 8.3 69.8 2.4 0.850