Merkel K D, Miller N E, Westbrook P R, Merritt J L
Arch Phys Med Rehabil. 1984 Mar;65(3):121-4.
To determine which kind of knee-ankle-foot orthosis (KAFO) is more efficient, we measured energy expenditure in standing, walking with a walker, and walking with crutches by eight subjects using the Scott-Craig KAFO and a single-stopped long-leg KAFO. All subjects had complete motor paralysis below the level of their lesion and had been fully trained to use KAFOs. Every subject used both types of KAFO, and energy expenditure--per minute and per meter traveled--was measured by oxygen consumption. No significant difference in energy expenditure appeared during standing. During ambulation, however, mean energy expenditure was less with the Scott-Craig KAFO than with the single-stopped type: 31% less kcal/m with a walker and 25% less kcal/min with crutches. These results suggest that the Scott-Craig KAFO is more energy-efficient than the single-stopped long-leg KAFO.
为了确定哪种膝-踝-足矫形器（KAFO）效率更高，我们让8名受试者分别使用斯科特-克雷格KAFO和单截长腿KAFO，测量了他们站立、使用助行器行走以及使用拐杖行走时的能量消耗。所有受试者在损伤平面以下均有完全性运动麻痹，并且都接受了使用KAFO的充分训练。每位受试者都使用了这两种类型的KAFO，通过耗氧量来测量每分钟和每行走一米的能量消耗。站立时能量消耗没有显著差异。然而，在行走过程中，使用斯科特-克雷格KAFO时的平均能量消耗低于单截型：使用助行器时每米少31%千卡，使用拐杖时每分钟少25%千卡。这些结果表明，斯科特-克雷格KAFO比单截长腿KAFO更节能。
