We investigated whether a proximal femoral nail (PFN) having two lag screws can be implanted without distal locking screws in AO/OTA 31-A1 and 31-A2 intertrochanteric femur fractures. Twenty-four patients with AO/OTA 31-A1 and 31-A2 fractures were treated with a PFN without distal interlocking by a single surgeon. The mean follow-up was 12 months (range: 7–23). Clinical and functional outcome was assessed according to the Harris hip score and Barthel’s activity score. The fractures healed in all patients; the average consolidation time was 14 weeks (range: 9–28). Fourteen patients had excellent and good results, nine patients had fair results, and one patient had a poor result according to the Harris hip score; 17 patients had a high range of mobility according to the Barthel activity score. Our results suggested that the PFN can be successfully implanted without distal interlocking in 31-A1 and 31-A2 fractures.
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机译：我们研究了在没有股骨远端锁定螺钉的情况下，在AO / OTA 31-A1和31-A2股骨转子间股骨骨折中是否可以植入具有两个方头螺钉的股骨近端钉（PFN）。 24例AO / OTA 31-A1和31-A2骨折的患者由PFN治疗，没有由单个外科医生进行远端互锁。平均随访时间为12个月（范围：7-23）。根据Harris髋关节评分和Barthel活动评分评估临床和功能结局。所有患者骨折均愈合；平均合并时间为14周（范围：9–28）。根据Harris髋关节评分，有14例患者取得了良好和良好的结果，有9例患者取得了良好的结果，其中1例患者的结果较差；根据Barthel活动评分，有17位患者具有较高的活动范围。我们的结果表明，PFN可以成功植入，而无需在31-A1和31-A2骨折中进行远端互锁。
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