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Abstract
The efficiency of the rolling crutch was compared with the conventional axillary crutch, using 7 male and 13 female subjects. Oxygen uptake was measured, using a portable oxygen meter (Oxylog). The rolling crutch reduced the height of vertical displacement of the subjects and therefore reduced energy requirements by significant amounts. Overall oxygen uptake was 9% lower while the distance covered per litre of oxygen was greater, average 11%, in female subjects. There were, in addition, significant effects on the subjects' preferred speed of locomotion. In view of the energy savings, which reflect the results of workers using other patterns of crutch, it was suggested that a combination of features from different crutches might be an even more effective way of reducing energy cost for crutch locomotion.