Miettinen S S A, Torssonen S K, Miettinen H J A, Soininvaara T
Department of Surgery, North Karelia Central Hospital, Joensuu, Finland Department of Orthopaedics, Traumatology and Hand Surgery, Kuopio University Hospital, Kuopio, Finland
Department of Surgery, North Karelia Central Hospital, Joensuu, Finland.
Scand J Surg. 2016 Mar;105(1):56-63. doi: 10.1177/1457496915577022. Epub 2015 Apr 13.
Unicompartmental knee arthroplasty is considered as an alternative to total knee arthroplasty for patients who have osteoarthritis limited to the medial compartment of the knee. The aim of this retrospective study was to find out clinical and radiological outcomes and related complications using the Oxford phase 3 prosthesis at a small-volume center.
In all, 95 Oxford unicompartmental knee arthroplasties (87 patients) were performed between 2000 and 2010 in North Karelia Central Hospital. Of these, five patients had undergone revision surgery. In all, 52 unicompartmental knee arthroplasties (46 patients) participated in this study. The mean age of patients was 61.4 years, and 78.2% of patients were females. Pain and function levels were evaluated by using the Knee Society score. Radiographic analyses were performed on preoperative and postoperative and follow-up radiographs.
The mean follow-up time was 6.5 years, and the Kaplan-Meier estimated 9-year implant survival rate was 88.9% (95% confidence interval = 78.7%-99.1%). The median Knee Society score of 77 (range: 18-93) at follow-up was considered good (range: 70-79). In this study, we found out that medial knee pain remains in 10% of unicompartmental knee arthroplasties several years after surgery, although the reason for the pain remained unclear. These mid-term results are promising, and good results can be achieved also at a small-volume center when strict patient selection is followed.
对于膝关节骨关节炎局限于内侧间室的患者，单髁膝关节置换术被认为是全膝关节置换术的一种替代方案。这项回顾性研究的目的是在一个小容量中心，了解使用牛津三期假体的临床和放射学结果以及相关并发症。
2000年至2010年期间，北卡累利阿中央医院共进行了95例牛津单髁膝关节置换术（87例患者）。其中，5例患者接受了翻修手术。共有52例单髁膝关节置换术（46例患者）参与了本研究。患者的平均年龄为61.4岁，78.2%的患者为女性。使用膝关节协会评分评估疼痛和功能水平。对术前、术后及随访X线片进行放射学分析。
平均随访时间为6.5年，Kaplan-Meier估计的9年植入物生存率为88.9%（95%置信区间=78.7%-99.1%）。随访时膝关节协会评分中位数为77（范围：18-93），被认为良好（范围：70-79）。在本研究中，我们发现，尽管疼痛原因尚不清楚，但在单髁膝关节置换术后数年，仍有10%的患者存在膝关节内侧疼痛。这些中期结果很有前景，并且在严格选择患者的情况下，小容量中心也能取得良好的结果。
