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Related Experiment Videos

[Evolution in prostheses for sprinters with lower-limb amputation].

D Pailler1, P Sautreuil, J-B Piera

  • 1MPR, Fédération nationale française handisport, 42, rue Louis-Lumière, 75020 Paris, France. medical@handisport.org

Annales De Readaptation Et De Medecine Physique : Revue Scientifique De La Societe Francaise De Reeducation Fonctionnelle De Readaptation Et De Medecine Physique
|August 7, 2004
PubMed
Summary

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Technical advances in prosthetics enhance athletic performance for amputees. Innovations in prosthetic feet and knee units improve sprinting for both trans-tibial and trans-femoral amputations, benefiting all amputees.

Area of Science:

  • Biomechanics of athletic performance
  • Prosthetic technology and design
  • Sports medicine and rehabilitation

Context:

  • Athletes with lower-limb amputation have seen significant performance gains due to prosthetic advancements over the past 15 years.
  • Modern sprinting prostheses utilize dynamic components like gel liners, vacuum sockets, and carbon prosthetic feet for trans-tibial amputees.
  • Trans-femoral amputees' prostheses incorporate hydraulic swing and stance control units for enhanced functionality.

Purpose:

  • To analyze the biomechanical differences in sprinting between able-bodied athletes and those with lower-limb amputations.
  • To examine the specific adaptations and compensations in gait mechanics for trans-tibial and trans-femoral amputees.
  • To highlight the role of prosthetic technology in optimizing athletic performance.

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Summary:

  • Athletes with amputation exhibit shorter prosthetic limb loading times and longer sound limb loading times compared to able-bodied runners.
  • The design of energy-storing prosthetic feet is influenced by the "up-on-the-toes" running gait.
  • Trans-tibial amputee sprinting is nearly symmetrical, with hip extensor effort compensating for reduced propulsion. Trans-femoral amputees display asymmetry due to the absence of a knee, compensated by prosthetic knee extension and hip extension.
  • Pelvic, trunk, and shoulder movements, including lumbar hyperlordosis, are observed during load transfer in amputee athletes.

Impact:

  • Research driven by amputee athletes has accelerated prosthetic treatment innovations.
  • Developments in orthotics and prosthetics for athletes have yielded significant benefits for non-athlete amputees in daily life.
  • The study underscores the critical link between advanced prosthetic design and the functional capabilities of individuals with lower-limb loss.