Abstract

Background: The femoral neck system(FNS) has recently emerged as an innovative treatment option for femoral neck fractures and shown promising results. However, the studies of treatment outcome in elderly population are still insufficient. The purpose of this study is to evaluate outcome of elder patients with femoral neck fractures treated with FNS in Taiwanese population.

Materials and methods:We retrospective reviewed 61 patients who underwent treatment with FNS for femoral neck fractures at our institution, 8 patients were excluded. We divided remaining 53 patients into two groups according to age, with a cutoff at 60 years old. Radiography parameters, operative finding and postoperative complications were analyzed.

Results: Among these 53 cases, 5 patients in elderly group had severe complication resulting in failure and required revision surgery. There was no failure in young group. The overall failure rate of FNS was 9.4%, and it was 16.1% in elderly group. Preoperative posterior tilt had a significantly higher risk of implant failure (p = 0.011).

Conclusions: Excessive preoperative posterior tilt increased the risk of implant failure in elder population with non-displaced femoral neck fractures treated with FNS. In addition, peri-implant subtrochanteric fractures represented a significant complication that requires careful consideration when utilizing FNS.