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Serum protein levels in patients with ONFH and healthy controls. Significant increases in S100A9 (A), VEGF (B), sVCAM-1 (C), IL-6 (D) and TRAP-5b (E) levels along with significant reductions in serum osteocalcin levels (F) in the ONFH group. Data are expressed as mean ± standard errors. * p < 0.05. Data are expressed as mean ± standard errors calculated from 38 patients with ONFH and 14 healthy controls. * p < 0.05.
