Clinical results of Hi-tech Knee II total knee arthroplasty in patients with rheumatoid athritis: 5- to 12-year follow-up
Clinical results of Hi-tech Knee II total knee arthroplasty in patients with rheumatoid athritis: 5- to 12-year follow-up
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DOI：
10.1186/1749-799x-7-9
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发表时间：
2012-02-22
影响因子：
2.6
通讯作者：
Suzuki, Munetaka
中科院分区：
文献类型：
--
作者：
Yamanaka, Hajime;Goto, Ken-ichiro;Suzuki, Munetaka
背景：全膝关节置换术（TKA）是类风湿关节炎（RA）患者缓解疼痛和改善功能的常见治疗方式。各种TKA假体均报告了良好的临床结局。非骨水泥型Hi-Tech Knee II交叉韧带保留（CR）型假体，股骨部件前部有6个翼片，后交叉韧带（PCL）保留，平对平表面部件几何结构，全聚乙烯髌骨，胫骨托中心螺钉的牢固初始固定，10层钛合金纤维网，和直接压缩成型的超高分子量聚乙烯（UHMWPE），本研究旨在评价使用非骨水泥型Hi-Tech Knee II CR在RA中进行初次TKA的临床结果，材料和方法：我们对31名RA患者使用非骨水泥型Hi-Tech Knee II CR型假体进行了32次连续的初次TKA。平均随访8年3个月。结果：术后平均最大屈曲角为115.6 °，KS膝关节评分和功能评分分别提高到88和70。1例患者发生感染等并发症，进行了翻修手术。在这个队列中没有松动的情况下，假体的生存率为96.9%，在12年postoperatives.Conclusion：这些结果表明，TKA使用非骨水泥高科技膝关节II CR型假体是一个非常有效的形式治疗RA患者在5至12年后。需要进一步的长期随访研究来确定这种类型假体的最终效用。
Background: Total knee arthroplasty (TKA) is a common form of treatment to relieve pain and improve function in cases of rheumatoid arthritis (RA). Good clinical outcomes have been reported with a variety of TKA prostheses. The cementless Hi-Tech Knee II cruciate-retaining (CR)-type prosthesis, which has 6 fins at the anterior of the femoral component, posterior cruciate ligament (PCL) retention, flat-on-flat surface component geometry, all polyethylene patella, strong initial fixation by the center screw of the tibial base plate, 10 layers of titanium alloy fiber mesh, and direct compression molded ultra high molecular weight polyethylene (UHMWPE), is appropriate for TKA in the Japanese knee.The present study was performed to evaluate the clinical results of primary TKA in RA using the cementless Hi-Tech Knee II CR-type prosthesis.Materials and methods: We performed 32 consecutive primary TKAs using cementless Hi-Tech Knee II CR-type prosthesis in 31 RA patients. The average follow-up period was 8 years 3 months. Clinical evaluations were performed according to the American Knee Society (KS) system, knee score, function score, radiographic evaluation, and complications.Results: The mean postoperative maximum flexion angle was 115.6 degrees, and the KS knee score and function score improved to 88 and 70 after surgery, respectively. Complications, such as infection, occurred in 1 patient and revision surgery was performed. There were no cases of loosening in this cohort, and prosthesis survival rate was 96.9% at 12 years postoperatively.Conclusion: These results suggest that TKA using the cementless Hi-Tech Knee II CR-type prosthesis is a very effective form of treatment in RA patients at 5 to 12 years postoperatively. Further long-term follow-up studies are required to determine the ultimate utility of this type of prosthesis.