正常行走足底压力测定与临床作用

Measurement and clinical application of normal plantar pressure

[目的]应用自行制作的微型压力传感器进行正常行走足底压力测定与临床实测。[方法]作者将微型压力传感器组装成测力鞋,采用视频计算机处理的方式,动态采集、分析一个步态周期全过程的足底压力分布,同时结合临床病人分析足底压力的病理变化规律。[结果]在正常组行走过程中,前足承担体重的49%,中足与后足共同负担体重的51%,而在病理状态下,人体行走出现动态失衡,引起足部负重的病理改变。[结论]通过动态分析足底压力的正常分布与病理改变,明确病因并为临床治疗提供借鉴。

[Objective] To develop a mini-pressure-sensor （MPS） for measurement of plantar pressure （PP） and to evaluate its clinical application. [Method] The MPS was installed in the shoes, and computer was used to accumulate and analyze the change of PP in whole walking stage. Pathologic changes of PP in clinical patients were also analyzed by MPS. [Result] In normal walking, the PP of forefoot was 49% of body weight （BW） and of midfoot and heel was totally 51% of BW, but at pathologic state, the equilibrium of walking was dynamically disrapted inducing a pathologic changes of foot bearing. [Conclusion] Self-developed MPS for measuring PP is help for dynamic analysis of normal PP and is valuable to recognize the pathologic distribution of PP in pathological state and to provide a guide for treatment.