Fig. 1From: The visible and hidden blood loss of Asia proximal femoral nail anti-rotation and dynamic hip screw in the treatment of intertrochanteric fractures of elderly high- risk patients: a retrospective comparative study with a minimum 3 years of follow-upFlow diagram demonstrating methods for identification of studies to assess the treatment of intertrochanteric femur fractures in the elderly using either the Asia proximal femoral nail anti-rotation (PFNA-II) or the dynamic hip screw (DHS) systems, and reasons for exclusionBack to article page