Do females with patellofemoral pain have abnormal hip and knee kinematics during gait?
Do females with patellofemoral pain have abnormal hip and knee kinematics during gait?
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DOI：
10.3109/09593980903423111
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发表时间：
2010-04-01
影响因子：
2
通讯作者：
Long-Rossi, Frances
中科院分区：
文献类型：
--
作者：
Salsich, Gretchen B.;Long-Rossi, Frances
我们的目的是检验以下假设：患有髌股关节疼痛（PFP）的女性在步态的站立阶段髋关节内收、髋关节内侧旋转和膝关节外翻（内侧塌陷）增加。20例PFP受试者和20例无痛受试者参加了研究。受试者在自由速度和快速步行过程中进行三维运动分析。在两个时间点计算髋关节正面和横向平面角度以及膝关节正面平面角度（峰值膝关节伸肌力矩[Pkmax]和最大膝关节伸展/过伸角度[MxExt]），并在三次试验中取平均值。在每个行走任务中，学生t检验比较了所有变量的组间差异。进行了事后分析，将4名PFP受试者（疼痛水平高于30/100的受试者）的亚组与无痛受试者进行了比较。最初，在自由速度行走期间没有组间差异。在快速行走过程中，PFP受试者在Pkalent时髋关节内收较少，在MxExt时髋关节内收较多。PFP受试者亚组在自由速度行走期间在Pkxft时髋关节内收更大，在MxExt时膝关节外翻更大，在快速行走期间在MxExt时髋关节内收和膝关节外翻更大。在低水平的任务，额面组件内侧塌陷目前在髋关节和膝关节的PFP受试者的一个亚组具有较高的疼痛水平。症状行为可能是重要的，在确定个人与内侧塌陷运动障碍。
Our objective was to test the hypothesis that females with patellofemoral pain (PFP) have increased hip adduction, hip medial rotation, and knee valgus (medial collapse) during the stance phase of gait. Twenty subjects with PFP and 20 pain-free subjects participated. Subjects underwent three-dimensional motion analysis during free speed and fast speed walking. Hip frontal and transverse plane angles and knee frontal plane angles were calculated at two time points (peak knee extensor moment [PkMOM], and maximum knee extension/hyperextension angle [MxExt]) and averaged over three trials. Within each walking task, Student's t-tests compared group differences in all variables. A post hoc analysis was performed, which compared a subgroup of four PFP subjects (those whose pain level was above 30/100) to pain-free subjects. Initially, there were no group differences during free speed walking. During fast speed walking, subjects with PFP had less hip adduction at PkMOM and greater hip adduction at MxExt. The subgroup of PFP subjects had greater hip adduction at PkMOM and greater knee valgus at MxExt during free speed walking and greater hip adduction and knee valgus at MxExt during fast speed walking. During low-level tasks, frontal plane components of medial collapse were present at the hip and knee in a subgroup of PFP subjects with higher pain levels. Symptom behavior may be important in identifying individuals with medial collapse movement impairments.