In vivo measurement of ACL length and relative strain during walking
In vivo measurement of ACL length and relative strain during walking
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DOI：
10.1016/j.jbiomech.2012.10.031
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发表时间：
2013-02-01
影响因子：
2.4
通讯作者：
DeFrate, L. E.
中科院分区：
文献类型：
--
作者：
Taylor, K. A.;Cutcliffe, H. C.;DeFrate, L. E.
尽管已有大量研究探讨了前交叉韧带损伤和重建对膝关节运动的影响，但目前鲜有资料描述日常生活活动中前交叉韧带在体内的应变情况。描述在步态等活动过程中的体内前交叉韧带应变的数据对于了解韧带的生物力学功能至关重要，最终对于改进前交叉韧带断裂患者的手术治疗至关重要。因此，我们的目标是研究正常水平行走的站立和摆动阶段前交叉韧带的相对张力。本研究共招募了8名正常受试者。通过结合磁共振成像、双平面透视和运动捕捉，我们创建了每个受试者正常步行运动的活体模型，以测量步态中的膝关节屈曲、前交叉韧带长度和相对前交叉韧带应变。回归分析显示膝关节屈曲与前交叉韧带长度呈负相关(R-2=0.61，p
Although numerous studies have addressed the effects of ACL injury and reconstruction on knee joint motion, there is currently little data available describing in vivo ACL strain during activities of daily living. Data describing in vivo ACL strain during activities such as gait is critical to understanding the biomechanical function of the ligament, and ultimately, to improving the surgical treatment of patients with ACL rupture. Thus, our objective was to characterize the relative strain in the ACL during both the stance and swing phases of normal level walking. Eight normal subjects were recruited for this study. Through a combination of magnetic resonance imaging, biplanar fluoroscopy, and motion capture, we created in vivo models of each subject's normal walking movements to measure knee flexion, ACL length, and relative ACL strain during gait. Regression analysis demonstrated an inverse relationship between knee flexion and ACL length (R-2=0.61, p