Bonutti Peter M, Dethmers Daniel A
Bonutti Clinic, Effingham, Illinois 62401, USA.
J Arthroplasty. 2008 Oct;23(7 Suppl):24-7. doi: 10.1016/j.arth.2008.06.025.
Contemporary unicompartmental knee arthroplasty has shown resurgence in use partly because of studies reporting excellent long-term survivorship. Both fixed-bearing as well as mobile-bearing designs have shown comparable results. Fixed-bearing designs, in particular, implants with metal-backed tibial components have shown more consistent long-term survival, whereas fixed bearings with an all-polyethylene tibial component have had mixed results. Similar to the all-polyethylene tibial component designs, mobile-bearing designs have demonstrated mixed results. One concern with mobile bearings is the high rate of complete tibial radiolucent lines. The keys to long-term survival of both fixed and mobile-bearing designs in unicompartmental knee arthroplasty are patient selection, surgical technique, and surgical experience.
当代单髁膝关节置换术的使用再度兴起，部分原因是有研究报告称其长期生存率极佳。固定平台和活动平台设计均显示出相似的结果。特别是固定平台设计，带有金属背衬胫骨部件的植入物显示出更一致的长期生存率，而全聚乙烯胫骨部件的固定平台则结果不一。与全聚乙烯胫骨部件设计类似，活动平台设计的结果也参差不齐。活动平台的一个问题是胫骨完全透亮线的发生率较高。单髁膝关节置换术中固定平台和活动平台设计长期生存的关键在于患者选择、手术技术和手术经验。
