ABE treatment improves the microstructure of the femoral head. (A) and (B) refer to two-dimensional (2D) and three-dimensional (3D) pictures, respectively, of normal bone from normal rats, and osteonecrotic bone in rats with steroid-induced ONFH with or without ABE treatment. Statistical analysis was performed on the differences in BV/TV (C), Tb.Pf (D), Tb.Th (E), Tb.N (F), Tb.sp (G), and BMD (H) in the control, model, ABE 10 g/kg, ABE 15 g/kg and ABE 22.5 g/kg groups. Data are presented as the mean ± S.D. (n =20 for control, n =25 for model, n =20 for ABE 10 g/kg, ABE 15 g/kg and 22.5 g/kg). # and ##: P <0.05 and P <0.01, respectively, in comparison with the control group. * and **: P <0.05 and P <0.01, respectively, in comparison with the model group.