Characterizing Ankle Function During Sloped Locomotion for Prosthesis Development

VA Eastern Colorado Health Care System

Status: Completed

Conditions: Traumatic Amputation of Lower Extremity

Treatments: Device: Powered ankle-foot prosthesis

Study type: Observational

Funder types: Other U.S. Federal agency

Identifiers

NCT01784003

A7972W

Details and patient eligibility

About

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.

Enrollment: 60 patients

Sex: All

Ages: 18 to 45 years old

Volunteers: Accepts Healthy Volunteers

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

Trial design

60 participants in 2 patient groups

Non-amputee

Description:

People without an amputation will be recruited to participate in the study.

Below the knee amputee

Description:

People with a unilateral transtibial amputation will be recruited to participate in the study.

Treatment:

Device: Powered ankle-foot prosthesis