Skip to main content

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
  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
  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
  1. Notes: change = follow-up minus baseline; SD = standard deviation.