Characterizing Ankle Function During Sloped Locomotion for Prosthesis Development

VA Eastern Colorado Health Care System60 enrolled

Overview

The proposed study aims to characterize biological ankle joint function during walking and running on slopes in order to further develop advanced powered ankle-foot prostheses. Ankle joint torque and angle data will be collected from non-amputees while walking and running at multiple speeds and slopes. This data will be used to develop control parameters for a powered ankle-foot prosthesis. Then, these parameters will be implemented and tested in a powered prosthesis worn by people with below the knee amputations.

Study Type

OBSERVATIONAL

Enrollment

Conditions

Traumatic Amputation of Lower Extremity

Interventions

Powered ankle-foot prosthesisDEVICE

Eligibility

Sex: ALLMin age: 18 YearsMax age: 45 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: Study 1: \- Between 18-60 years old. Study 2 and 3: * Between 18-60 years old. * At least 1 year post-amputation * no current problems with prosthesis or residual limb * At least a K3 level of ambulation Study 4: \- Between 18-45 years old Study 5: * Between 18-45 years old * At least 1 year post-amputation * no current problems with prosthesis or residual limb * Experience running with a passive prosthesis * At least a K4 level of ambulation Exclusion Criteria: Studies 1-5 * Cardiovascular, pulmonary, or neurological disease or disorder * Musculoskeletal injury

Locations (1)

University of Colorado Boulder

Boulder, Colorado, United States

Outcomes

Primary Outcomes

Force-measuring treadmill and motion capture

Time frame: approximately 2 months

Metabolic analysis system

Time frame: approximately 2 months

Data from ClinicalTrials.gov

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