SummaryEvidence is conflicting from two retrospective cohort studies to show whether titanium elastic nails or stainless steel nails are preferred in pediatric patients with femoral shaft fractures.One study found the malunion rate was four times higher with titanium nails compared with stainless steel nails.The other study reported more complications after stainless steel nailing,and found time to healing and to full weight bearing favored the use of titanium nails.Conclusions regarding preference for either of these two nails cannot be made from the evidence in these two studies.根据现有2项回顾性队列研究提供的证据,对于小儿股骨干骨折患者,钛弹力钉与不锈钢钉比较何者疗效更佳,目前仍无定论.1项研究认为,当选择钛弹力钉治疗时,患儿发生骨折畸形愈合的几率要比选择不锈钢钉治疗时高4倍.但是,另1项研究则认为,选择不锈钢钉治疗后患儿术后并发症的发生率更高,而且愈合时间和患肢负重所需时间更长.因此,从目前2项研究的结论中仍无法明确两种内固定物何者疗效更优。