Esther Carbó-Laso , Pablo Sanz-Ruiz , Tania Quevedo-Narciso , Luis Quiroga-Montes , Marina Benito-Gallo , Javier Vaquero-Martín
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Patients were evaluated with the Hospital for Special Surgery (HSS) score at 1, 12, 36 and 60 months postoperatively.</p></div><div><h3>Results</h3><p>Two intraoperative partial patella tendon avulsions (2.6%) were diagnosed. Six knees showed loosening of the tibial component (8%) and four (5.3%) required revision. Two chronic infections (2.6%) were successfully managed. No polyethylene dislocation (spin-out) was observed. 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引用次数: 0
摘要
设计旋转平台膝关节假体是为了减少假体的接触应力，增加假体的耐用性。目的报道连续接受原发性旋转平台膝关节置换术的患者的临床结果，平均随访94个月。材料与方法自2003年至2010年，采用低接触应力(LCS®)旋转平台假体进行全膝关节置换术75例。疼痛性膝骨关节炎为主要诊断。平均随访94(60-118)个月。术前64膝内翻成角(平均169°)，11膝外翻成角(平均187.8°)。分别于术后1个月、12个月、36个月和60个月用特殊外科医院(Hospital for Special Surgery, HSS)评分对患者进行评价。结果术中髌骨部分肌腱撕脱2例(2.6%)。6例膝关节显示胫骨部分松动(8%)，4例(5.3%)需要翻修。2例慢性感染(2.6%)得到成功控制。未观察到聚乙烯位错(旋出)。术前HSS评分平均为44.6分，随访结束时提高至86.9分(P <0.001)。结论:我们的研究显示旋转平台膝关节置换术在平均随访94个月后获得了良好的生存率和功能结果，与传统固定轴承TKA的结果相似。证据水平:
Resultados clínicos y funcionales de la artroplastia total de rodilla Low Contact Stress (LCS®) con un mínimo de 5 años de seguimiento
Introduction
Rotating-platform knee prosthesis were design to reduce contact stress of the implants and to increase the durability of implants.
Objective
To report the clinical outcomes of a consecutive series of patients who underwent primary rotating-platform knee arthroplasty, with a mean follow-up of 94 months.
Material and method
From 2003 to 2010, 75 total knee replacements were performed with Low Contact Stress (LCS®) rotating-platform prosthesis. Painful knee osteoarthritis was the main diagnosis. Mean follow-up was 94 (60-118) months. Preoperatively, 64 knees had varus angulation (mean: 169°) and eleven knees had valgus angulation (mean: 187.8°). Patients were evaluated with the Hospital for Special Surgery (HSS) score at 1, 12, 36 and 60 months postoperatively.
Results
Two intraoperative partial patella tendon avulsions (2.6%) were diagnosed. Six knees showed loosening of the tibial component (8%) and four (5.3%) required revision. Two chronic infections (2.6%) were successfully managed. No polyethylene dislocation (spin-out) was observed. The mean preoperative HSS score was 44.6 points, which improved to 86.9 points at the end of the follow-up (P < 0.001).
Conclusion
Our study showed good survivorship and functional results of rotating-platform knee replacement at a mean follow-up of 94 months, similar to results of conventional fixed-bearing TKA.
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