Energetic consequences of using a prosthesis with adaptive ankle motion during slope walking in persons with a transtibial amputation.
Background: Technological advances in prosthetic design include the use of microprocessors that adapt device performance based on user motion. The Proprio ankle unit prepositions the foot to adjust for walking on slopes and increases foot clearance during swing to minimize gait deviations.Study Desi...
| Publicado en: | Prosthetics & Orthotics International Vol. 38; no. 1; pp. 5 - 12 |
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| Autores principales: | , |
| Formato: | research Journal Article |
| Publicado: |
Lippincott Williams & Wilkins
2014 Feb
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=107881025&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 107881025 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 03093646 G8W jtl: Prosthetics & Orthotics International issn: 03093646 maglogo: N pubinfo: dt: 2014 Feb vid: 38 iid: 1 pid: 433 pub: Lippincott Williams & Wilkins place: Baltimore, Maryland artinfo: ui: 107881025 107881025 NLM23525888 2012454573 10.1177/0309364613481489 NLM23525888 PMC4014004 107881025 ppf: 5 ppct: 7 formats: tig: atl: Energetic consequences of using a prosthesis with adaptive ankle motion during slope walking in persons with a transtibial amputation. aug: au: Darter, Benjamin J Wilken, Jason M affil: 1Department of Physical Therapy, Virginia Commonwealth University, Richmond, VA, USA. sug: subj: Adaptation, Physiological Physiology Amputees Ankle Joint Limb Prosthesis Energy Metabolism Physiology Range of Motion Tibia Surgery Walking Physiology Adult Kinematics Physiology Exercise Test Female Gait Physiology Male Microcomputers Oxygen Consumption Prosthesis Design Adult: 19-44 years Female Male ab: Background: Technological advances in prosthetic design include the use of microprocessors that adapt device performance based on user motion. The Proprio ankle unit prepositions the foot to adjust for walking on slopes and increases foot clearance during swing to minimize gait deviations.Study Design: Comparative analysis.Objectives: To investigate the effect of a prosthesis with adaptive ankle motion on physiological gait performance during slope walking.Methods: Six persons with a unilateral transtibial amputation completed treadmill walking tests at three slopes (-5°, 0°, and 5°). The participants were tested wearing a customary device, active Proprio (Pon), and an identical inactivated Proprio (Poff).Results: Metabolic energy expenditure, energy cost for walking, and rating of walking difficulty were not statistically different between the Pon and Poff for all tested slopes. However, for slope descent, energy expenditure and energy cost for walking improved significantly by an average of 10%-14% for both the Pon and Poff compared to the customary limb. Rating of walking difficulty also showed an improvement with slope descent for both the Pon and Poff compared to the customary device. An improvement with slope ascent was found for Pon compared to the customary limb only.Conclusions: Adaptive ankle motion provided no meaningful physiological benefit during slope walking. The Proprio was, however, less demanding than the customary device for slope descent. Differences in the mechanical properties of the prosthetic feet likely contributed to the changes.Clinical Relevance: While the adaptive ankle motion did not affect metabolic energy expenditure or energy cost for walking, the results suggest close attention should be paid to the mechanical properties of the foot component. Assessment of gait on nonlevel surfaces is recommended to better understand the implications of different prosthetic design features. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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