Bispherical metal augment improved biomechanical stability in severe acetabular deficiency reconstruction: a comparative finite element analysis. - Li, Guoyuan; Zhang, Xiaoqi; Chen, Min; Luo, Zhengliang; Ji, Xiaofeng; Pan, Chunang; Li, Hui; Shang, Xi-fu (BMC Musculoskeletal Disorders, 2024)