2010
DOI: 10.1682/jrrd.2009.10.0166
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Abstract: Abstract-Five solid-ankle experimental prosthetic feet were used in this double-blind randomized crossover study to determine the effects of forefoot flexibility on gait of 14 unilateral transtibial prosthesis users. Flexibility in experimental feet was altered by changing the number of flexural hinges in their forefoot sections. When experimental prosthetic foot conditions were compared, measured prosthetic ankle dorsiflexion range of motion increased as much as 3.3° with increasing flexibility (p < 0.001) an… Show more

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Cited by 67 publications
(59 citation statements)
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“…Our foot conditions were designed to cover this range of roll-over shape radii. Unfortunately, the measured roll-over shapes for the most flexible feet (F1 and F2) in the gait analysis part of the study were found to be highly variable and generally higher than their designed values [16]. This problem potentially arises because the moment arm for each cut is reduced in the F1 and F2 conditions, not allowing the cuts to close in the appropriate timing to achieve the designed roll-over shape radius.…”
Section: Discussionmentioning
confidence: 94%
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“…Our foot conditions were designed to cover this range of roll-over shape radii. Unfortunately, the measured roll-over shapes for the most flexible feet (F1 and F2) in the gait analysis part of the study were found to be highly variable and generally higher than their designed values [16]. This problem potentially arises because the moment arm for each cut is reduced in the F1 and F2 conditions, not allowing the cuts to close in the appropriate timing to achieve the designed roll-over shape radius.…”
Section: Discussionmentioning
confidence: 94%
“…Their metabolic rate versus foot radius curve has a fairly wide "valley" near the minimum. The effective rocker radii of feet used in this study, as estimated from measurements made during the gait analysis session [16], most likely resided within this valley. Walking speeds during energy expenditure testing on a level treadmill varied from 0.65 to 1.20 m/s.…”
Section: Discussionmentioning
confidence: 96%
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