Development of a Rapid Cartilage Damage Quantification Method for the Lateral Tibiofemoral Compartment Using Magnetic Resonance Images: Data from the Osteoarthritis Initiative

Table 1

Baseline lateral cartilage damage index stratified by baseline lateral joint space narrowing (JSN) and Kellgren-Lawrence (KL) grade.

(a) Lateral joint space narrowing (JSN)

Cartilage measure	JSN = 0 () mean	JSN = 1 () mean	JSN = 2 () mean	JSN = 3 () mean	value for trend
Lateral femur CDI	2969.3	3003.2	2184.4	1542.0	<0.001
Lateral tibia CDI	1154.9	889.9	663.8	392.7	<0.001
Lateral tibiofemoral CDI	4124.3	3893.0	2848.2	1934.6	<0.001

(b) Kellgren-Lawrence (KL)

Cartilage measure	KL = 0 () mean	KL = 1 () mean	KL = 2 () mean	KL = 3 () mean	KL = 4 () mean	value for trend
Lateral femur CDI	2718.7	2831.5	3061.0	2254.0	1605.3	<0.001
Lateral tibia CDI	1229.3	994.1	946.3	690.4	424.7	<0.001
Lateral tibiofemoral CDI	3948.0	3825.5	4007.3	2944.4	2030.0	<0.001