Bilateral lower limb strategies used during a step-up task in individuals who have undergone unilateral total knee arthroplasty
Bilateral lower limb strategies used during a step-up task in individuals who have undergone unilateral total knee arthroplasty
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DOI：
10.1016/s0268-0033(02)00061-x
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发表时间：
2002-10-01
影响因子：
1.8
通讯作者：
Prentice, SD
中科院分区：
文献类型：
--
作者：
Byrne, JM;Gage, WH;Prentice, SD
Objective.本研究的目的是确定骨关节炎和全膝关节置换术治疗的联合作用如何改变双侧下肢关节功能。下肢关节工作的年龄匹配的健康，对照组的参与者进行了比较，手术和非手术的肢体工作的个人谁经历了全膝关节置换术。背景研究调查结果全膝关节置换术后主要集中在手术膝关节，确定赤字手术膝关节功能。存在额外的下肢缺陷和调整未受影响的关节，以弥补这些缺陷，还有待检查。关节力矩，功率和工作进行了计算，使用双边下肢力和运动学数据收集过程中的步骤，以11.25和20厘米的高度。50%的患者无法踏上20厘米的台阶。在两个台阶高度上，当手术肢体领先时，手术膝关节功小于对照组。当非手术肢体导联时，观察到非手术导联膝关节工作的缺陷。在这两种情况下，铅髋关节工作增加。手术和非手术膝关节在逐步提升任务中所做的工作低于健康对照组。这一缺陷通过增加铅髋关节伸肌工作来平衡。
Objective. The purpose of this study was to determine how bilateral lower limb joint function is altered by the combined effects of osteoarthritis and its treatment by total knee arthroplasty.Design. Lower limb joint work of age-matched healthy, control participants was compared to surgical and non-surgical limb work in individuals who had undergone total knee arthroplasty.Background Research investigating outcomes following total knee arthroplasty has focussed primarily on the surgical knee, identifying deficits in surgical knee function. The existence of additional lower limb deficits and adjustments made by unaffected joints to complement these deficits, has yet to be examined.Methods. Joint moments, power and work were calculated using bilateral lower limb force and kinematic data collected during a step-up to heights of 11.25 and 20 cm.Results. Fifty percent of patients were unable to step onto the 20 cm step. At both step heights, when the surgical limb led the step-up, surgical knee work was less than controls. When the non-surgical limb led, deficits in non-surgical lead knee work were observed. In both cases, lead hip work increased.Conclusions. Work done by both surgical and non-surgical knees in a step-up task was lower than that done by healthy controls. This deficit was balanced by increased lead hip extensor work.