annette pantall do uk phd david ewins phd
Download
Skip this Video
Download Presentation
Annette Pantall, DO(UK), PhD; David Ewins, PhD

Loading in 2 Seconds...

play fullscreen
1 / 5

Annette Pantall, DO(UK), PhD; David Ewins, PhD - PowerPoint PPT Presentation


  • 101 Views
  • Uploaded on

Muscle activity during stance phase of walking: Comparison of males with transfemoral amputation with osseointegrated fixations to nondisabled male volunteers. Annette Pantall, DO(UK), PhD; David Ewins, PhD. Aim

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Annette Pantall, DO(UK), PhD; David Ewins, PhD' - hedda


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
annette pantall do uk phd david ewins phd

Muscle activity during stance phase of walking: Comparison of maleswith transfemoral amputation with osseointegrated fixations tonondisabled male volunteers

Annette Pantall, DO(UK), PhD; David Ewins, PhD

slide2

Aim

    • Examine surface electromyography (sEMG) activity of hip joint muscles, vertical ground reaction force (GRF), and hip joint angles during stance phase of walking in individuals with transfemoral amputation (TFA) with osseointegrated fixations (OFs).
  • Relevance
    • OFs may improve comfort, fatigue, hip movement, and ease of prosthetic attachment but little information is available regarding muscle function.
method
Method
  • 5 males with TFA with OFs.
    • Recorded GRF, lower-limb kinematics, and sEMG from residual-limb muscles.
  • 10 nondisabled male subjects.
    • Collected sEMG data.

Placement of electrodes on right lower limb.

results
Results
  • Hip muscles displayed cyclical patterns of sEMG activity suggestive of functional ability to contract and exert moment about hip joint.
    • Patterns of sEMG recordings were broadly similar between TFA and nondisabled groups.
      • Main difference was phase of maxima and minima.
  • Variability of muscle activity was greater in individuals with OFs than in subjects with intact limbs.
conclusion
Conclusion
  • Muscles in residual limb retain aspects of their previous functional pattern.
  • Viability of myoprocessor in TFA.
    • Normalized amplitude is too variable to permit single muscles to be used.
    • Features like temporal occurrence of local minima or maxima that relate to loading and hip kinematics should be explored.
    • Microprocessor-controlled prostheses may modulate neurolocomotor signals, resulting in signal that could function as myoprocessor.
ad