Long-term results of posterior-cruciate-retaining Genesis I total knee arthroplasty
Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association(2011)
摘要
Background Long-term results of Genesis I modular total knee system are not well known. Methods We analyzed data from 345 patients with 393 primary total knee arthroplasties (TKA) using the Genesis I prosthesis. In all cases, the posterior cruciate ligament (PCL) was retained, and the patella was not resurfaced. The minimum follow-up was 10 (range 10–16) years. Results Preoperative range of motion improved from 89° preoperatively to 105° at the time of the most recent follow-up ( p < 0.001). Mean preoperative Knee Society pain and function scores increased from 29 and 25 points to 91 and 85 points, respectively ( p < 0.001). Tibiofemoral angle shifted from 2.40° of varus before to 4.8° of valgus after the operation ( p < 0.001). Early postoperative complications occurred in 34 knees (8.6%). Manipulation under general anesthesia was done in six knees (1.5%). Nonprogressive radiolucent lines were seen around the femoral component in 16 knees (4%) and at the tibial bone–cement interface in 101 knees (25%). However, in only five cases (1.3%) was there significant progression leading to implant loosening and revision surgery. Eight more revisions were performed due to infection (three knees), stiffness (three knees), excessive wear and fracture of polyethylene liner (one knee), and instability (one knee). The overall survivorship of knee replacement reached 96.7%. Conclusions In the long term (up to 16 years), PCL-retaining Genesis I total knee prosthesis is associated with good functional outcomes and low failure rates.
更多查看译文
关键词
Total Knee Arthroplasty, Femoral Component, Posterior Cruciate Ligament, Tibial Component, Radiolucent Line
AI 理解论文
溯源树
样例
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要