HSS J. 2011 Jul;7(2):125-9. doi: 10.1007/s11420-011-9205-4. Epub 2011 Jun 14.
Reported results of unicondylar knee arthroplasty (UKA) have mixed reviews in comparison with results of tri-compartmental knee arthroplasty (TKA). We prospectively evaluated the short-term results (2 years) of a newer design of a UKA implant (Preservation UKA) with a cobalt-chromium femoral component and an all polyethylene tibial component. Seventy-two patients with intact ligaments and loss of only medial articular cartilage received the Preservation prosthesis. Data were obtained using WOMAC, Knee Society score (KSS), and standard radiographs. WOMAC scores improved by 24 points and KSS improved by 33 points at 2-year follow-up. Mean flexion increased by 4° to126° at 2 years. On X-ray, only one patient had a radiolucency. No fractures occurred. Two knees were revised due to clinical symptoms of medial compartment pain. This 2-year follow-up study of the Preservation UKA shows promising early results. Long-term data would be necessary to compare results with TKA or other unicompartmental replacements.
单髁膝关节置换术（UKA）的报道结果与三关节膝关节置换术（TKA）的结果相比褒贬不一。我们前瞻性评估了一种新型 UKA 植入物（Preservation UKA）的短期（2 年）结果，该植入物采用钴铬股骨组件和全聚乙烯胫骨组件。72 例韧带完整且仅内侧关节软骨丧失的患者接受了 Preservation 假体。使用 WOMAC、膝关节协会评分（KSS）和标准 X 线片获得数据。WOMAC 评分在 2 年随访时改善了 24 分，KSS 评分改善了 33 分。平均屈曲度在 2 年内增加了 4°，达到 126°。X 线片上只有 1 例出现透亮线。没有发生骨折。由于内侧间室疼痛的临床症状，有 2 个膝关节进行了翻修。这项为期 2 年的 Preservation UKA 随访研究显示出有前景的早期结果。需要长期数据来比较与 TKA 或其他单髁置换的结果。
