Fig. 1From: Accumulation of LDL/ox-LDL in the necrotic region participates in osteonecrosis of the femoral head: a pathological and in vitro studyLDL and ox-LDL accumulated in the necrotic region of ONFH. A A representative femoral head specimen from the patient underwent hip-preserving surgery. B IHC staining of LDL on a representative pathological section of ONFH. C IHC staining of ox-LDL on a representative pathological section of ONFH. D The percentage of LDL-positive osteocytes/lacunae and IRS in necrotic and healthy regions. E The percentage of ox-LDL-positive osteocytes/lacunae and IRS in necrotic and healthy regions. Ten random fields (400×) of both necrotic and healthy regions in each specimen were observed and calculated for analysis. Data are represented as the mean ± SD of 19 specimens, and comparisons are made using paired t-test or Wilcoxon’s paired testBack to article page