Stride-to-stride fluctuations in transtibial amputees are not affected by changes in push-off mechanics from using different prostheses

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  • Additional Information
    • Publication Information:
      Public Library of Science
    • Publication Date:
      2018
    • Abstract:
      Stride-to-stride fluctuations of joint kinematics during walking reflect a highly structured organization that is characteristic of healthy gait. The organization of stride-to-stride fluctuations is disturbed in lower-limb prosthesis users, yet the factors contributing to this difference are unclear. One potential contributor to the changes in stride-to-stride fluctuations is the altered push-off mechanics experienced by passive prosthesis users. The purpose of our study was to determine if changes in push-off mechanics affect stride-to-stride fluctuations in transtibial amputees. Twenty-two unilateral transtibial amputees were enrolled in the 6-week cross-over study, where High and Low Activity (based on the Medicare Functional Classification System) prostheses were worn for three weeks each. Data collection took place at the end of the third week. Participants walked on a treadmill in a motion capture laboratory to quantify stride-to-stride fluctuations of the lower extremity joint angle trajectories using the largest Lyapunov Exponent, and over floor-embedded force platforms to enable calculating push-off work from the prosthesis and the sound limb. Push-off work was 140% greater in the High Activity prosthesis compared to the Low Activity prosthesis (p 0.001), however no significant change was observed in stride-to-stride fluctuations of the ankle between the two prosthesis types (p = 0.576). There was no significant correlation between changes in prosthesis push-off work and the largest Lyapunov exponent. Though differences in push-off work were observed between the two prosthesis types, stride-to-stride fluctuations remained similar, indicating that prosthesis propulsion mechanics may not be a strong determinant of stride-to-stride fluctuations in unpowered transtibial prosthesis users.
    • ISSN:
      1932-6203
    • Rights:
      COPYRIGHT 2018 Public Library of Science
      Copyright 2018 Gale, Cengage Learning. All rights reserved.
    • Accession Number:
      edsgcl.557683611
  • Citations
    • ABNT:
      ROCK, C. G. et al. Stride-to-stride fluctuations in transtibial amputees are not affected by changes in push-off mechanics from using different prostheses. PLoS ONE, [s. l.], n. 10, 2018. Disponível em: http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edsgov&AN=edsgcl.557683611. Acesso em: 21 fev. 2020.
    • AMA:
      Rock CG, Wurdeman SR, Stergiou N, Takahashi KZ. Stride-to-stride fluctuations in transtibial amputees are not affected by changes in push-off mechanics from using different prostheses. PLoS ONE. 2018;(10). http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edsgov&AN=edsgcl.557683611. Accessed February 21, 2020.
    • APA:
      Rock, C. G., Wurdeman, S. R., Stergiou, N., & Takahashi, K. Z. (2018). Stride-to-stride fluctuations in transtibial amputees are not affected by changes in push-off mechanics from using different prostheses. PLoS ONE, 10.
    • Chicago/Turabian: Author-Date:
      Rock, Chase G., Shane R. Wurdeman, Nicholas Stergiou, and Kota Z. Takahashi. 2018. “Stride-to-Stride Fluctuations in Transtibial Amputees Are Not Affected by Changes in Push-off Mechanics from Using Different Prostheses.” PLoS ONE, no. 10. http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edsgov&AN=edsgcl.557683611.
    • Harvard:
      Rock, C. G. et al. (2018) ‘Stride-to-stride fluctuations in transtibial amputees are not affected by changes in push-off mechanics from using different prostheses’, PLoS ONE, (10). Available at: http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edsgov&AN=edsgcl.557683611 (Accessed: 21 February 2020).
    • Harvard: Australian:
      Rock, CG, Wurdeman, SR, Stergiou, N & Takahashi, KZ 2018, ‘Stride-to-stride fluctuations in transtibial amputees are not affected by changes in push-off mechanics from using different prostheses’, PLoS ONE, no. 10, viewed 21 February 2020, .
    • MLA:
      Rock, Chase G., et al. “Stride-to-Stride Fluctuations in Transtibial Amputees Are Not Affected by Changes in Push-off Mechanics from Using Different Prostheses.” PLoS ONE, no. 10, 2018. EBSCOhost, search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edsgov&AN=edsgcl.557683611.
    • Chicago/Turabian: Humanities:
      Rock, Chase G., Shane R. Wurdeman, Nicholas Stergiou, and Kota Z. Takahashi. “Stride-to-Stride Fluctuations in Transtibial Amputees Are Not Affected by Changes in Push-off Mechanics from Using Different Prostheses.” PLoS ONE, no. 10 (2018). http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edsgov&AN=edsgcl.557683611.
    • Vancouver/ICMJE:
      Rock CG, Wurdeman SR, Stergiou N, Takahashi KZ. Stride-to-stride fluctuations in transtibial amputees are not affected by changes in push-off mechanics from using different prostheses. PLoS ONE [Internet]. 2018 [cited 2020 Feb 21];(10). Available from: http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edsgov&AN=edsgcl.557683611