Letter to the Editor on “Proximal Femoral Shortening and Varus Collapse After Fixation of “Stable” Pertrochanteric Femur Fractures”

aDepartment of Orthopaedic Surgery, Qingpu Branch of Zhongshan, Hospital Affiliated to Fudan University, Shanghai, China bThe Department of Orthopaedic Surgery, Yangpu Hospital, Tongji University School of Medicine, Shanghai, China The authors report no conflict of interest.