Bilateral Frontal Plane Mechanics After Unilateral Total Knee Arthroplasty
Bilateral Frontal Plane Mechanics After Unilateral Total Knee Arthroplasty
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DOI：
10.1016/j.apmr.2008.02.034
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发表时间：
2008-10-01
影响因子：
4.3
通讯作者：
O'Bryan, Mary E.
中科院分区：
文献类型：
--
作者：
Milner, Clare E.;O'Bryan, Mary E.
目的：比较全膝关节置换术(TKA)术后患肢和健康对照肢体的膝关节力学性能。设计：横断面分析，年龄匹配的对照组。地点：生物力学和运动医学实验室。研究对象：受试者(n=16；男性8；女性8；平均年龄61±7岁；身高1.71±0.10米；体重87.5±15.1公斤)和年龄匹配的健康对照组(n=16；男性8，女性8；平均年龄63±7岁；身高1.7±0.9米；体重87.5±15.1公斤)；重量72.5+/-13.9千克)。主要观察指标：步行站立期峰内收角、第一峰内收力矩、额面膝角和负重峰值力矩。结果：手术组、非手术组和健康对照肢体的峰值膝内收角(P=.176)、负荷峰时的额面膝角(P=.116)和力矩(P=.260)相似。第一峰值内收力矩非手术侧高于手术侧和健康对照组(P=0.003)。结论：非手术侧膝关节第一峰值内收力矩较大，提示对侧膝关节全膝关节置换术后膝关节的可预见性恶化可能是其发生机制之一。
Objective: To compare frontal plane knee mechanics among the operated and nonoperated limbs after total knee arthroplasty (TKA) and a healthy control limb.Design: A cross-sectional analysis with age-matched control group.Setting: A biomechanics and sports medicine laboratory.Participants: Subjects (n = 16; 8 men, 8 women; mean age, 61+/-7y; height, 1.71+/-0.10m; weight, 87.5+/-15.1kg) and age-matched healthy controls (n=16; 8 men, 8 women; mean age, 63+/-7y; height, 1.7+/-.09m; weight 72.5+/-13.9kg).Interventions: Not applicable. Main Outcome Measures: Peak knee adduction angle, first peak knee adduction moment, and the frontal plane knee angle and moment at loading peak during the stance phase of walking.Results: Peak knee adduction angle (P=.176), and the frontal plane knee angle (P=.116) and moment (P=.260) at loading peak were similar across the operated, nonoperated, and healthy control limbs. The first peak knee adduction moment was higher in the nonoperated limb when compared with the operated limb and with the healthy control (P=.003). First peak knee adduction moment was similar in the operated knee and the healthy control.Conclusions: The greater first peak knee adduction moment in the nonoperated knee indicates a possible mechanism for the predictable deterioration of this knee after unilateral TKA of the contralateral knee.