Home › Traumatic Amputation › NCT06433648
Understanding How Powered Componentry Impacts K2-Level Transfemoral Amputee Gait
Who can join
Ages 18 to 95 · All sexes
Full eligibility criteria
Inclusion Criteria: * Ages 18-95 * A unilateral transfemoral amputation * At least 6 months since definitive prosthesis fitting * Able to walk 50 meters (55 yards) with a prosthesis without the assistance of another person. * Medically cleared by physician to participate in study * English speaking Exclusion Criteria: * Weight greater than 250 pounds * Significant new injury that would prevent use of a prosthesis: The ability to consistently wear a prosthesis and perform activities of daily living and specific performance tasks is necessary to evaluate the relative benefits of the interventions. * Cognitive impairment sufficient to adversely affect understanding of or compliance with study requirements, ability to communicate experiences, or ability to give informed consent: The ability to understand and comply with requirements of the study is essential in order for the study to generate useable, reliable data. The ability to obtain relevant user feedback through questionnaires and informal discussion adds significant value to this study. * Significant other comorbidity: Any other medical issues or injuries that would preclude completion of the study, use of the prostheses, or that would otherwise prevent acquisition of useable data by researchers.
About the study
The goal of this study is to understand how providing power at the knee or ankle individually, or providing power at both the knee and ankle, impacts ambulation for K2 level transfemoral amputees.
Aim 1: measure functional performance of K2 level ambulators when using a commercially available passive microprocessor knee prosthesis (Ottobock Cleg/Ottobock foot) or a powered knee and ankle prosthesis (SRALab Hybrid Knee and SRAlab Polycentric Powered Ankle.
Aim 2: Participants will be evaluated on the contribution of adding power at the knee only or the ankle only.
Aim 3: The investigators will evaluate the functional performance after intensive clinical gait training on the powered knee and ankle prosthesis (SRALab Hybrid Knee and SRALab Polycentric Powered Ankle).
Our hypothesis is that providing powered componentry will improve function and that intensive training will magnify those improvements.
What is being tested
- Ottobock CLeg4 + Ottobock foot (device)
- SRALAB Hybrid Knee + Polycentric Ankle (device)
- SRALAB Hybrid Knee + Passive Ankle (device)
- Ottobock CLeg 4 + Polycentric Ankle (device)
Sponsor: Shirley Ryan AbilityLab · Participants: 20 · Started: May 1, 2023
Contact the study team
- Suzanne Finucane, MS, PTA · Phone: 312-238-0937
- Levi Hargrove, PhD · Phone: 312-238-2080
Official record on ClinicalTrials.gov — NCT06433648
Locations in the U.S.
| Illinois | Shirley Ryan AbilityLab, Chicago |
Conditions
From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.