Comparison of microstructural and mechanical properties of trabeculae in femoral head from osteoporosis patients with and without cartilage lesions: a case–control study

Table 2 Comparison of severity of cartilage lesions in the two groups by Mankin score, Modified Outerbridge classification and GAG content

Variable	Mankin score			Outerbridge classification grade				GAG content (%)	Water content (%)
Variable	<6	6-10	>10	1	2	3	4	GAG content (%)	Water content (%)
Group 1	12(1–2)	6(6–8)	0	18	0	0	0	18.3 ± 5.1	56.9 ± 9.7
(N = 18)	12(1–2)	6(6–8)	0	18	0	0	0	18.3 ± 5.1	56.9 ± 9.7
Group 2	0	10(6–10)	8(11–12)	0	12	6	0	15.1 ± 3.8	49.1 ± 10.1
(N = 18)	0	10(6–10)	8(11–12)	0	12	6	0	15.1 ± 3.8	49.1 ± 10.1

Group 1: OP control group, Group 2: OP with Cartilage lesions. Reported values in the parentheses are ranges. Significant differences were found in the two groups for GAG content and water content (all P < 0.05).

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