Contribution of Each Leg to the Control of Unperturbed Bipedal Stance in Lower Limb Amputees: New Insights Using Entropy Balance Control in Amputees Using Entropy Measures
2011

How Each Leg Helps Amputees Stand Still

Sample size: 8 publication Evidence: moderate

Author Information

Author(s): Hlavackova Petra, Franco Céline, Diot Bruno, Vuillerme Nicolas

Primary Institution: FRE 3405, AGIM (AGeing Imaging Modeling), CNRS-UJF-EPHE, Grenoble, France

Hypothesis

The study aims to assess the relative contribution of each leg to unperturbed bipedal posture in lower limb amputees.

Conclusion

The non-amputated leg contributes more to maintaining balance than the amputated leg in lower limb amputees.

Supporting Evidence

  • The non-amputated leg showed a larger body weight distribution than the amputated leg.
  • The amplitude and velocity of CoP trajectories were greater under the non-amputated leg.
  • CoP regularity was lower under the non-amputated leg, indicating more stable posture.

Takeaway

When people with one leg amputated try to stand still, they rely more on their good leg to keep their balance.

Methodology

Eight unilateral trans-femoral amputees stood on a pressure data system to measure their postural behavior.

Potential Biases

Potential biases may arise from the small sample size and specific inclusion criteria.

Limitations

The study's findings may not generalize to all amputees or other populations with balance impairments.

Participant Demographics

Eight unilateral traumatic trans-femoral amputees, mean age not specified.

Statistical Information

P-Value

p<0.05

Statistical Significance

p<0.05

Digital Object Identifier (DOI)

10.1371/journal.pone.0019661

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