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Related Experiment Video

Updated: Jan 29, 2026

Chemical Amputation and Regeneration of the Pharynx in the Planarian Schmidtea mediterranea
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Physical Function and Pre-Amputation Characteristics Explain Daily Step Count after Dysvascular Amputation.

Matthew J Miller1,2, Paul F Cook3, Paul W Kline1

  • 1Physical Therapy Program, Department of Physical Medicine and Rehabilitation, University of Colorado, Aurora, CO.

PM & R : the Journal of Injury, Function, and Rehabilitation
|February 8, 2019
PubMed
Summary
This summary is machine-generated.

People with dysvascular lower limb amputation (LLA) take very few steps daily. Factors like walking ability, assistive device use, cardiovascular disease, and prior walking time significantly impact daily step count after amputation.

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Area of Science:

  • Rehabilitation Medicine
  • Amputation Science
  • Physical Therapy

Background:

  • Individuals with dysvascular lower limb amputation (LLA) exhibit significantly reduced daily step counts, achieving only one-third of recommended activity levels.
  • Despite improvements in physical function post-rehabilitation, daily physical activity often remains unchanged, with underlying factors for low step counts being unclear.

Purpose of the Study:

  • To identify key factors influencing daily step count in patients following dysvascular lower limb amputation (LLA).

Main Methods:

  • A cross-sectional analysis of secondary data from 58 patients with dysvascular major LLA was conducted.
  • Data included demographics, LLA characteristics, comorbidities, health behaviors, and physical function, with daily steps measured via accelerometers over 10 days.
  • Multiple linear regression with backward elimination identified variables significantly associated with log steps/day.

Main Results:

  • Patients averaged 1450 ± 1309 steps/day, indicative of sedentary behavior.
  • The final model, explaining 62% of the variance in daily step count, included 2-minute walk distance (32%), assistive device use (11%), cardiovascular disease (10%), and pre-amputation walking time (11%).

Conclusions:

  • Daily step count after dysvascular LLA is substantially influenced by physical function, cardiovascular disease, and historical walking capacity.
  • Interventions to increase physical activity post-LLA should integrate management of chronic diseases and pre-existing health behaviors, not solely focus on physical function improvements.