Table 4 Cartilage damage index stratified by baseline Kellgren-Lawrence (KL) grade
From: Development of a rapid knee cartilage damage quantification method using magnetic resonance images
Cartilage measure | KL = 0 (n = 4) mean (SD) | KL = 1 (n = 19) mean (SD) | KL = 2 (n = 40) mean (SD) | KL = 3 (n = 34) mean (SD) | KL = 4 (n = 5) mean (SD) | p-value for trend |
|---|---|---|---|---|---|---|
| Â | Cross-sectional | |||||
Femur CDI (Baseline) | 771.99 (157.40) | 750.75 (159.50) | 781.47 (114.73) | 634.00 (218.90) | 583.92 (434.01) | <0.01 |
Tibia CDI (Baseline) | 363.07 (103.74) | 314.96 (60.46) | 343.96 (66.72) | 272.83 (94.26) | 199.81 (163.56) | <0.01 |
Tibiofemoral CDI (Baseline) | 1135.1 (257.41) | 1065.7 (207.06) | 1125.4 (155.11) | 906.83 (304.59) | 783.73 (595.54) | <0.01 |
| Â | Longitudinal | |||||
Femur CDI (Change) | −81.06 (46.06) | −30.35 (43.25) | −36.72 (59.38) | −72.92 (62.13) | −109.4 (159.37) | 0.02 |
Tibia CDI (Change) | −56.37 (43.48) | −17.85 (32.13) | −15.14 (26.74) | −35.36 (49.33) | −30.86 (33.75) | 0.40 |
Tibiofemoral CDI (Change) | −137.40 (80.56) | −48.19 (61.81) | −51.86 (69.27) | −108.30 (90.93) | −140.20 (190.81) | 0.03 |