Energy-efficient knee-ankle-foot orthosis

A case study

Kenton R Kaufman, S. E. Irby, J. W. Mathewson, B. W. Wirta, D. H. Sutherland

Research output: Contribution to journalArticle

62 Citations (Scopus)

Abstract

The energy required to walk using a newly designed knee-ankle-foot orthosis (KAFO) has been evaluated. The new KAFO locks the knee during stance and allows free-knee motion during the swing phase of gait. The energy required for gait on level ground and on a slope with a 5-percent incline was evaluated in a postpolio subject. Comparisons were made between the standard locked-knee KAFO and the free-knee (unlocked) configuration. The oxygen consumption rate (ml/kg/ min) and energy cost (ml/kg/m) were significantly lower during free-knee gait. The results of the study show that a KAFO design that allows free-knee motion during swing is effective in lowering the energy required for walking.

Original languageEnglish (US)
Pages (from-to)79-85
Number of pages7
JournalJournal of Prosthetics and Orthotics
Volume8
Issue number3
StatePublished - Jun 1996
Externally publishedYes

Fingerprint

Foot Orthoses
Ankle
Knee
Oxygen
Costs
Gait
Oxygen Consumption
Walking

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Surgery

Cite this

Kaufman, K. R., Irby, S. E., Mathewson, J. W., Wirta, B. W., & Sutherland, D. H. (1996). Energy-efficient knee-ankle-foot orthosis: A case study. Journal of Prosthetics and Orthotics, 8(3), 79-85.

Energy-efficient knee-ankle-foot orthosis : A case study. / Kaufman, Kenton R; Irby, S. E.; Mathewson, J. W.; Wirta, B. W.; Sutherland, D. H.

In: Journal of Prosthetics and Orthotics, Vol. 8, No. 3, 06.1996, p. 79-85.

Research output: Contribution to journalArticle

Kaufman, KR, Irby, SE, Mathewson, JW, Wirta, BW & Sutherland, DH 1996, 'Energy-efficient knee-ankle-foot orthosis: A case study', Journal of Prosthetics and Orthotics, vol. 8, no. 3, pp. 79-85.
Kaufman KR, Irby SE, Mathewson JW, Wirta BW, Sutherland DH. Energy-efficient knee-ankle-foot orthosis: A case study. Journal of Prosthetics and Orthotics. 1996 Jun;8(3):79-85.
Kaufman, Kenton R ; Irby, S. E. ; Mathewson, J. W. ; Wirta, B. W. ; Sutherland, D. H. / Energy-efficient knee-ankle-foot orthosis : A case study. In: Journal of Prosthetics and Orthotics. 1996 ; Vol. 8, No. 3. pp. 79-85.
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