PURPOSE The purpose of this study was to assess whether unicompartmental knee arthroplasty (UKA) results in better patient-reported and clinical outcome than total knee arthroplasty (TKA). The study hypothesis was UKA yields better patient-reported and clinical outcomes than TKA. METHODS Our prospective cohort study compared patients who underwent medial UKA or TKA from February 2014 through June 2015. Forgotten Joint Score (FJS), the short form of the Knee Injury and Osteoarthritis Outcome Score (KOOS PS), EuroQOL Five Dimensions Questionnaire (EQ-5D), and the Knee Society Score (KSS) were completed at two weeks, six weeks, three months, six months, and one year post-operatively. The KOOS PS, EQ-5D, and the KSS were also documented pre-operatively. RESULTS Fifty-seven patients (57 knees) were allocated to the UKA group and 62 patients (62 knees) to the TKA group. At baseline, no statistically significant differences were observed between groups regarding patient demographics and pre-operative scores. Except for FJS at 2 weeks (p = 0.326), all postoperative scores revealed significant differences as early as two weeks and up to 12 months (p < 0.05). CONCLUSIONS Our findings suggest UKA patients are less aware of their joint replacements than TKA patients for medial osteoarthritis of the knee. UKA conserves more soft tissue and bone than TKA, which may be the reason for the differences observed.

中文翻译：

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全膝关节置换术和单室膝关节置换术被遗忘的关节评分：一项前瞻性队列研究。

目的本研究的目的是评估单室膝关节置换术（UKA）是否比全膝关节置换术（TKA）更好地报告患者和临床结果。研究假设是UKA比TKA产生更好的患者报告和临床结局。方法我们的前瞻性队列研究比较了2014年2月至2015年6月接受UKA或TKA内侧治疗的患者。遗忘关节评分（FJS），膝关节损伤和骨关节炎结果评分的简称（KOOS PS），EuroQOL五维度问卷（EQ- 5D），并在术后两周，六周，三个月，六个月和一年完成膝关节社会评分（KSS）。术前还记录了KOOS PS，EQ-5D和KSS。结果UKA组57例（57膝），TKA组62例（62膝）。在基线时，各组之间在患者人口统计学和术前评分方面没有观察到统计学上的显着差异。除了第2周的FJS（p = 0.326）以外，所有术后评分均显示最早两周至长达12个月的显着差异（p <0.05）。结论我们的研究结果表明，与TKA患者相比，UKA患者对膝关节内侧骨关节炎的了解较少。UKA比TKA保留更多的软组织和骨骼，这可能是观察到差异的原因。所有术后评分均显示最早两周至长达12个月的显着差异（p <0.05）。结论我们的研究结果表明，与TKA患者相比，UKA患者对膝关节内侧骨关节炎的了解较少。UKA比TKA保留更多的软组织和骨骼，这可能是观察到差异的原因。所有术后评分均显示最早两周至长达12个月的显着差异（p <0.05）。结论我们的研究结果表明，与TKA患者相比，UKA患者对膝关节内侧骨关节炎的了解较少。UKA比TKA保留更多的软组织和骨骼，这可能是观察到差异的原因。