Abstract：
OBJECTIVE: To investigate relationships between static foot posture, dynamic plantar foot forces and knee pain in people with medial knee osteoarthritis (OA).
METHODS: Data from 164 participants with symptomatic, moderate to severe radiographic medial knee OA were analysed. Knee pain was self-reported using a numerical rating scale (NRS; scores 0-10; higher scores worse) and the Knee Injury and Osteoarthritis Outcome Score pain subscale (KOOS; scores 0-100; lower scores worse). Static foot posture was assessed using clinical tests (foot posture index, foot mobility magnitude, navicular drop). Dynamic plantar foot forces (lateral, medial, whole foot, medial-lateral ratio, arch index) were measured using an in-shoe plantar pressure system while walking. Relationships between foot posture and plantar forces (independent variables) and pain (dependent variables) were evaluated using linear regression models, unadjusted and adjusted for sex, walking speed, Kellgren & Lawrence grade, shoe category, and body mass (for dynamic plantar foot forces).
RESULTS: No measure of static foot posture was associated with any knee pain measure. Higher medial-lateral foot force ratio at midstance, and a higher arch index during overall stance, were weakly associated with higher knee pain on the NRS (regression coefficient = 0.69, 95% confidence interval (CI) 0.09 to 1.28) and KOOS (coefficient=3.03, 95% CI 0.71 to 5.35) pain scales, respectively.
CONCLUSIONS: Dynamic plantar foot forces, but not static foot posture, were associated with knee pain in people with medial knee OA. However, the amount of pain explained by increases in plantar foot force was small; thus, these associations are unlikely to be clinically meaningful.
METHODS: Data from 164 participants with symptomatic, moderate to severe radiographic medial knee OA were analysed. Knee pain was self-reported using a numerical rating scale (NRS; scores 0-10; higher scores worse) and the Knee Injury and Osteoarthritis Outcome Score pain subscale (KOOS; scores 0-100; lower scores worse). Static foot posture was assessed using clinical tests (foot posture index, foot mobility magnitude, navicular drop). Dynamic plantar foot forces (lateral, medial, whole foot, medial-lateral ratio, arch index) were measured using an in-shoe plantar pressure system while walking. Relationships between foot posture and plantar forces (independent variables) and pain (dependent variables) were evaluated using linear regression models, unadjusted and adjusted for sex, walking speed, Kellgren & Lawrence grade, shoe category, and body mass (for dynamic plantar foot forces).
RESULTS: No measure of static foot posture was associated with any knee pain measure. Higher medial-lateral foot force ratio at midstance, and a higher arch index during overall stance, were weakly associated with higher knee pain on the NRS (regression coefficient = 0.69, 95% confidence interval (CI) 0.09 to 1.28) and KOOS (coefficient=3.03, 95% CI 0.71 to 5.35) pain scales, respectively.
CONCLUSIONS: Dynamic plantar foot forces, but not static foot posture, were associated with knee pain in people with medial knee OA. However, the amount of pain explained by increases in plantar foot force was small; thus, these associations are unlikely to be clinically meaningful.
摘要：
目的：研究静态足部姿势之间的关系，内侧膝骨关节炎（OA）患者的动态足底力和膝关节疼痛。
方法：来自164名有症状的参与者的数据，对中度至重度影像学膝关节内侧OA进行了分析。使用数字评定量表（NRS；得分0-10；得分较高；得分较差）和膝关节损伤和骨关节炎结果评分疼痛子量表（KOOS；得分0-100；得分较低）自我报告膝关节疼痛。静态足部姿势使用临床测试进行评估(足部姿势指数，脚活动度大小,舟状下降）。动态足底力(横向，中间,整只脚,内侧-外侧比,足弓指数）是在行走时使用鞋内足底压力系统测量的。使用线性回归模型评估足部姿势与足底力（自变量）和疼痛（因变量）之间的关系，对性别没有调整和调整，步行速度,KL级,鞋类,和身体质量（动态足底力）。
结果：静态足部姿势的测量与任何膝关节疼痛测量都没有关联。中间位置的内侧-外侧脚力比更高，在整体立场上有更高的足弓指数，在NRS（回归系数=0.69，95％置信区间（CI）0.09至1.28）和KOOS（系数=3.03，95％CI0.71至5.35）疼痛量表上，分别。
结论：动态足底力，但不是静态的脚姿势，与膝关节内侧OA患者的膝关节疼痛有关。然而,足底力量的增加所解释的疼痛量很小，因此,这些关联不太可能具有临床意义.
方法：来自164名有症状的参与者的数据，对中度至重度影像学膝关节内侧OA进行了分析。使用数字评定量表（NRS；得分0-10；得分较高；得分较差）和膝关节损伤和骨关节炎结果评分疼痛子量表（KOOS；得分0-100；得分较低）自我报告膝关节疼痛。静态足部姿势使用临床测试进行评估(足部姿势指数，脚活动度大小,舟状下降）。动态足底力(横向，中间,整只脚,内侧-外侧比,足弓指数）是在行走时使用鞋内足底压力系统测量的。使用线性回归模型评估足部姿势与足底力（自变量）和疼痛（因变量）之间的关系，对性别没有调整和调整，步行速度,KL级,鞋类,和身体质量（动态足底力）。
结果：静态足部姿势的测量与任何膝关节疼痛测量都没有关联。中间位置的内侧-外侧脚力比更高，在整体立场上有更高的足弓指数，在NRS（回归系数=0.69，95％置信区间（CI）0.09至1.28）和KOOS（系数=3.03，95％CI0.71至5.35）疼痛量表上，分别。
结论：动态足底力，但不是静态的脚姿势，与膝关节内侧OA患者的膝关节疼痛有关。然而,足底力量的增加所解释的疼痛量很小，因此,这些关联不太可能具有临床意义.
