Hooper N, Snell D, Hooper G, Maxwell R, Frampton C
University of Otago Christchurch, PO Box 4345, Christchurch 8140, New Zealand.
Bone Joint J. 2015 Oct;97-B(10):1358-63. doi: 10.1302/0301-620X.97B10.35668.
This study reports on the first 150 consecutive Oxford cementless unicompartmental knee arthroplasties (UKA) performed in an independent centre (126 patients). All eligible patients had functional scores (Oxford knee score and high activity arthroplasty score) recorded pre-operatively and at two- and five-years of follow-up. Fluoroscopically aligned radiographs were taken at five years and analysed for any evidence of radiolucent lines (RLLs), subsidence or loosening. The mean age of the cohort was 63.6 years (39 to 86) with 81 (53.1%) males. Excellent functional scores were maintained at five years and there were no progressive RLLs demonstrated on radiographs. Two patients underwent revision to a total knee arthroplasty giving a revision rate of 0.23/100 (95% confidence interval 0.03 to 0.84) component years with overall component survivorship of 98.7% at five years. There were a further four patients who underwent further surgery on the same knee, two underwent bearing exchanges for dislocation and two underwent lateral UKAs for disease progression. This was a marked improvement from other UKAs reported in New Zealand Joint Registry data and supports the designing centre's early results.
本研究报告了在一个独立中心为126例患者连续实施的首例150例牛津非骨水泥单髁膝关节置换术（UKA）。所有符合条件的患者在术前、术后两年及五年随访时均记录了功能评分（牛津膝关节评分和高活动度关节置换术评分）。在术后五年拍摄荧光透视校准的X线片，并分析是否有透光线（RLLs）、下沉或松动的迹象。该队列的平均年龄为63.6岁（39至86岁），其中男性81例（53.1%）。五年时维持了优异的功能评分，X线片上未显示有进行性RLLs。两名患者接受了全膝关节置换翻修术，翻修率为0.23/100（95%置信区间0.03至0.84）组件年，五年时总体组件生存率为98.7%。另有四名患者在同一膝关节接受了进一步手术，两名因脱位进行了衬垫更换，两名因疾病进展接受了外侧UKA手术。这与新西兰关节注册数据中报告的其他UKA相比有显著改善，并支持设计中心的早期结果。
