The clinical efficacy and safety of double reverse traction repositor and traction table in the reduction of unstable intertrochanteric fractures in elderly patients: a retrospective comparative study - Cao, Faqi; Xie, Xudong; Hu, Yiqiang; Zhou, Wu; Mi, Bobin; Liu, Mengfei; Liu, Guohui (Annals of Translational Medicine, 2022)