A high flexion total knee arthroplasty design replicates healthy knee motion
A high flexion total knee arthroplasty design replicates healthy knee motion
复制标题
DOI：
10.1097/01.blo.0000148948.79128.76
复制
发表时间：
2004-11-01
影响因子：
4.2
通讯作者：
Dennis, DA
中科院分区：
文献类型：
--
作者：
Argenson, JNA;Komistek, RD;Dennis, DA
深屈同时影响股骨-胫骨接触模式和髌股关节。本研究的目的是比较未植入和植入的膝关节的髌股运动，并分析用于深屈设计的全膝关节置换术后的股骨-胫骨运动学。应用透视技术对5例健康膝关节、5例前交叉韧带缺陷患者和20例高屈曲全膝关节置换术患者在膝关节深屈时的三维膝关节运动学进行了评估。膝关节置换术患者的髌股接触位置平移较健康膝关节患者少，但平均活动度和膝关节倾斜角与健康膝关节相似。平均而言，接受全膝关节置换术的患者正常轴向旋转4.9度，所有患者的股骨后退至少为-4.4 mm。人工全膝关节置换组患者平均负重活动范围为125°。在这项研究中，植入高屈曲膝关节置换设计的患者的运动学模式与健康膝关节相似。可以假设，与对照组患者相比，接受全膝关节置换术的患者的膝盖骨上的作用力并没有显著增加。
Deep flexion affects both femorotibial contact pattern and the patellofemoral articulation. The purpose of this study was to compare the patellofemoral motion of nonimplanted and implanted knees and to analyze femorotibial kinematics after total knee replacement designed for deep flexion. Three-dimensional patellofemoral kinematics were evaluated during a deep knee bend using fluoroscopy for five control patients with a healthy knee, five patients with an anterior-cruciate-ligament-deficient knee, and 20 patients who had a high flexion total knee arthroplasty. Less translation of patellofemoral contact position was seen in patients who had knee replacements than in patients with healthy knees, but the average motion and the patella tilt angles were similar to the healthy knees. On average, patients who had a total knee arthroplasty had 4.9degrees normal axial rotation, and all patients had at least -4.4 mm of posterior femoral roll-back. The average weightbearing range of motion of the patients in the total knee arthroplasty group was 125degrees. In this study, patients implanted with a high-flexion knee replacement design had kinematic patterns that were similar to the healthy knee. It can be hypothesized that forces acting on the patella were not substantially increased for patients who had a total knee arthroplasty compared with the control patients.