Knees showing progression of osteoarthritis by dichotomous criteria | Knees not showing progression of osteoarthritis by dichotomous criteria | p Value | |||
---|---|---|---|---|---|
Criteria for grading progression | n | Change in JSW (mm, mean (SD)) | n | Change in JSW (mm, mean (SD)) | |
*Based on atlas grading of films that were blinded with respect to chronological order. | |||||
†Based on the grading of films after unblinding with respect to chronological order. | |||||
JSN, joint space narrowing; JSW, joint space width; K&L, Kellgren and Lawrence. | |||||
K&L grade | 86 | −0.64 (0.95) | 247 | −0.28 (0.48) | 0.001 |
Medial JSN, severity rating* | 68 | −1.05 (0.92) | 272 | −0.18 (0.42) | <0.001 |
Gestalt judgment of medial JSN† | 110 | −0.76 (0.94) | 250 | −0.21 (0.38) | <0.001 |