Fig. 1From: Effect of knee osteoarthritis on the postoperative outcome of proximal femoral nail anti-rotation in the treatment of intertrochanteric fractures in the elderly: a retrospective analysisFlow diagram demonstrating methods of studies to investigate the effect of knee osteoarthritis (KOA) on the postoperative efficacy of proximal femoral nail anti-rotation (PFNA) in the treatment of intertrochanteric fractures (IFs) in the elderlyBack to article page