膝骨性关节炎功能评价步态指标研究——足底压力各阶段时间分布及地面垂直反力

Study of Knee Osteoarthritis Gait Index on Function Evaluation-Time Distribution at the Sole and the Vertical Rebound Force at Stand Phase

目的探讨膝骨性关节炎患者足底压力各阶段时间分布及地面垂直反力。方法选取40例膝骨性关节炎(KOA)患者、10位正常老年人和10位正常年轻人,运用足底压力测量系统测试单足支撑期足底压力各阶段时间分布及地面垂直反力。结果在时间分布上,单侧OA组健、患侧触地初期和前脚掌蹬离期差异无显著性意义(P>0.05),健、患侧之间前脚掌触地及全足支撑期差异有非常高度显著性意义(P<0.001);单侧KOA组健侧与正常老年组相应侧比较,各阶段差异均有显著性意义(P<0.05)。双侧OA组左右侧相比差异无显著性意义(P>0.05),与单侧KOA组健、患侧比较,各阶段差异均有显著性意义(P<0.05)。单侧KOA组健、患侧缓冲时间T0和缓冲力系数K值差异有非常显著性意义(P<0.01),健侧与正常老年人比较差异有显著性意义(P<0.025,P<0.001);双侧KOA组自身比较差异无显著性意义(P>0.05),但小于正常老年组及单侧KOA组健侧(P<0.05)。结论KOA患者单足承重期时间减少,缓冲时间缩短,缓冲力系数降低,这些指标可以作为KOA患者功能评价步态指标和疗效客观依据。

Objective To investigate time distribution of pressure of footplate in each stage and vertical anti-force from ground of patients with knee osteoarthritis （KOA）. Methods 40 KOA patients, 10 aged people, and 10 common saplings were selected to test time distribution of pressure of footplate in each stage and vertical anti-force from ground in period of monopodia support. Results To unilateral KOA patient, there was not obvious difference to be observed in initial contact phase and forefoot push off phase （ P 〉0.05）, but there was a significant difference in forefoot contact phase and foot flat phase between health side and sick side （ P 〈0. 001）, and there was obvious difference decreased buffer time and buffer force coefficient between them （P 〈0.01）. Conclusion To KOA patients, the time decreases in weight-bearing phase and absorption shocks, and amortization coefficient also decreases. These indexes can be used as the walking index of functional assessment and the objective evidence of curative effect.