Suzuki N, Shinohara T, Kimizuka M, Yamaguchi K, Mita K
Izu Iryo Fukushi Center for Children's Rehabilitation, Shizuoka, Japan.
Bull Hosp Jt Dis. 2000;59(2):76-80.
In order to determine whether flexible plastic ankle foot orthoses (AFOs) really have functional advantage for children with spastic diplegia (CP children). Six CP children (13.2 +/- 1.9 years) who showed moderate spasticity walked on a treadmill at relative speeds that ranged from slow to fast for three minutes at each speed. While walking with and without flexible plastic AFOs, oxygen uptake (VO2) was measured. Then an energy expenditure index (EEI) was calculated by taking the VO2 value divided by walking speed. A curve EEI-walking speed relationship was approximated to a parabolic curve. Then, the lowest value of EEI, as an economical EEI, was derived from the curve. In four of the six CP children, the EEI while walking with flexible plastic AFOs were larger than without flexible plastic AFOs. The economical EEI while walking with and without flexible plastic AFOs was 0.56 +/- 0.26 ml/kg/m and 0.42 +/- 0.14 ml/kg/m, respectively. The ambulation with flexible plastic AFOs required more energy than without flexible plastic AFOs (p < 0.05). From these results, flexible plastic AFOs do not seem to provide a functional advantage for CP children.
为了确定柔性塑料踝足矫形器（AFO）对痉挛型双瘫儿童（脑瘫儿童）是否真的具有功能优势。六名表现为中度痉挛的脑瘫儿童（13.2±1.9岁）在跑步机上以从慢到快的相对速度行走，每种速度下行走三分钟。在佩戴和不佩戴柔性塑料AFO行走时，测量摄氧量（VO2）。然后通过将VO2值除以步行速度来计算能量消耗指数（EEI）。EEI与步行速度的关系曲线近似为抛物线。然后，从该曲线得出EEI的最低值，即经济EEI。在六名脑瘫儿童中的四名中，佩戴柔性塑料AFO行走时的EEI大于不佩戴柔性塑料AFO时的EEI。佩戴和不佩戴柔性塑料AFO行走时的经济EEI分别为0.56±0.26 ml/kg/m和0.42±0.14 ml/kg/m。佩戴柔性塑料AFO行走比不佩戴时需要更多能量（p<0.05）。从这些结果来看，柔性塑料AFO似乎并未为脑瘫儿童提供功能优势。
