Liu Shiluan, Long Hua, Zhang Yinglong, Ma Baoan, Li Zhao
Department of Orthopedics and Orthopedics Oncology Institute of Chinese PLA, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi, P.R.China.
J Arthroplasty. 2016 Mar;31(3):646-54. doi: 10.1016/j.arth.2015.10.017. Epub 2015 Oct 26.
Although the single-radius (SR) femoral design is known to have theoretical advantages in many aspects, studies of clinical outcomes that compare the SR with the multiple-radius (MR) femoral design are controversial. We performed a meta-analysis to address the hypothesis that a SR femoral design in primary total knee arthroplasty improves patient outcomes.
The meta-analysis identified 15 articles reporting the clinical outcomes of 2212 knee replacements using the SR (n = 948) compared with the multiradius (MR; n = 1361) femoral design. Comparing SR with MR, we examined the Knee Society Score for the knee (KSS-knee), KSS-function, knee flexion, range of motion, complications, isometric peak torque of knee, and survival rate.
The range of motion of SR knees was lower than that of MR knees. No differences were found in the analyses of KSS-knee, KSS-function, knee flexion, complications, isometric peak torque of the knee, and survival rate.
Our meta-analysis does not provide clinical support for the previously reported theoretical advantages of the SR implant design.
尽管单半径（SR）股骨设计在许多方面具有理论优势，但比较SR与多半径（MR）股骨设计的临床结果研究存在争议。我们进行了一项荟萃分析，以验证在初次全膝关节置换术中使用SR股骨设计可改善患者预后这一假设。
该荟萃分析纳入了15篇报告，这些报告涉及2212例膝关节置换术的临床结果，其中使用SR股骨设计的有948例，使用多半径（MR）股骨设计的有1361例。比较SR和MR，我们检查了膝关节协会膝关节评分（KSS-膝关节）、KSS功能评分、膝关节屈曲度、活动范围、并发症、膝关节等长峰值扭矩和生存率。
SR膝关节的活动范围低于MR膝关节。在KSS-膝关节、KSS功能评分、膝关节屈曲度、并发症、膝关节等长峰值扭矩和生存率的分析中未发现差异。
我们的荟萃分析并未为先前报道的SR植入物设计的理论优势提供临床支持。
