O'Connor J J, Goodfellow J W, Dodd C A F, Murray D W
Department of Engineering Science and Oxford Orthopaedic Engineering Centre, University of Oxford, Oxford, UK.
Proc Inst Mech Eng H. 2007 Jan;221(1):47-59. doi: 10.1243/09544119JEIM251.
About one-third of osteoarthritic patients requiring knee replacement have focal lesions limited mainly to the medial compartment and can achieve excellent postoperative function after medial unicompartmental replacement. However, late failures of many unicompartmental prostheses require revision at a rate about twice that of total knee replacement. The use of a fully conforming mobile-bearing meniscal unicompartmental prosthesis in the hands of experienced surgeons can reduce revision rates to levels equivalent to the best results achieved with total knee replacement. The paper argues the case for such a prosthesis and demonstrates that the usual modes of failure of unicompartmental arthroplasty, most of them biomechanical, can thereby be avoided.
约三分之一需要进行膝关节置换的骨关节炎患者存在主要局限于内侧间室的局灶性病变，在内侧单髁置换术后可获得优异的术后功能。然而，许多单髁假体的晚期失败需要翻修，其翻修率约为全膝关节置换的两倍。在经验丰富的外科医生手中使用完全匹配的活动平台半月板单髁假体可将翻修率降低至与全膝关节置换最佳结果相当的水平。本文论证了使用这种假体的理由，并表明单髁关节成形术常见的失败模式（其中大多数是生物力学方面的）可由此避免。
