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Fig. 2 | Journal of Orthopaedic Surgery and Research

Fig. 2

From: Degradation of subchondral bone collagen in the weight-bearing area of femoral head is associated with osteoarthritis and osteonecrosis

Fig. 2

SEM results (× 5.0K) shows the differences of collagen fibers among the groups. a Collagen fibers in the OA and ONFH group appeared to be thinner, rougher, sparser, and more wizened compared with FNF group, and more fissures were seen on the surface of collagen fibers. The characteristics in ONFH group were more apparent than OA group. b Quantitative results showed the diameter of collagen fibers and gap between collagen fibers among the groups. Data were expressed as mean ± SD; N = 10 specimens/group. Bar = 10 μm. *p < 0.05 versus FNF group (by one-way ANOVA and Dunnett’s post hoc test)

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