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Prosthetic foot roll-over shapes with implications for alignment of trans-tibial prostheses
HANSEN AH; CHILDRESS DS; KNOX EH
PROSTHET ORTHOT INT , 2000, vol. 24, n° 3, p. 205-215 Doc n°: 98819 Localisation : Documentation IRR Descripteurs : EC16 -PROTHESE DE MEMBRE INFERIEUR Roll-over shape is introduced as a significant characteristic of prosthetic feet. The roll-over shapes of the Flexwalk, Quantum, SACH, and SAFE prosthetic feet were determined using three methods; two involving quasi-static loading and one dynamic loading. The results show that foot roll-over shape properties obtained by quasi-static and by dynamic methods are similar. Relationships between foot roll-over shape and the alignment of trans-tibial prostheses are introduced that suggest ways to align trans-tibial prostheses without walking trials and iterations. The relationships may explain what prosthetists attempt to accomplish when they dynamically align a trans-tibial limb. They also explain why prosthetic feet with different mechanical properties usually necessitate different alignments, and may explain why a number of gait studies of trans-tibial amputees do not show major gait differences when walking is executed on various kinds of prosthetic feet. Langue : ANGLAIS Identifiant basis : 2001214751 |
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