Three-dimensional distribution of subchondral fracture lines in osteonecrosis of the femoral head oleh Yan-Bin Wu, Guang-Bo Liu, Huo Li, Jia-Zhou Wu, Jin-Shu Tang, Jian-Ting Ye, Ying-Jie Xiong, Xi-Wei Peng, Ze-Xian Liu, Yu-Zheng Lu, Cong-Cong Guan, Hao-Ye Meng, Xiao-Han Sun, Xin Wang, Ai-Yuan Wang, Zhe Zhao, Yuan Hu, Yu-Feng Liu, Li-Jun Sun, Ling Qin, Jiang Peng