Amputation Clinical Trial
Official title:
Clinical Outcomes Associated With At Home Use of Non-Powered vs. Powered Prosthetic Knees by K2-level Individuals With Transfemoral Amputations
The goal of this proposed project is to gather community-based data from the K2-level Transfemoral Amputee (TFA) population to aid in evidence-based prescription of powered prosthetic knees (i.e., choosing the right device to maximize the benefit for each patient). The investigators intend to use this trial data along with a concurrent study being conducted within the K3-K4 level population to guide the implementation of effective prescriptions towards those that can benefit most from a given device and limit prescription to those who would not see benefit in order to ensure the most judicious use of Department of Defense (DoD) and Veteran's Affairs healthcare dollars. The findings will also be shared with the research community to help drive the design of future devices by identifying what features and functions are most beneficial to which patient populations when the devices are used outside of the laboratory. In summary, more community-based data on how powered prosthetic knees compare with the current standard in TFA populations is needed to allow for improved clinical decision making and clinical outcomes.
Status | Recruiting |
Enrollment | 26 |
Est. completion date | August 31, 2025 |
Est. primary completion date | August 31, 2025 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 18 Years and older |
Eligibility | Inclusion Criteria: - Are at least 18 years old - Transfemoral prosthesis user (limb absence between the knee and hip) - Current user of a mechanical knee - Regularly wears prosthesis at least 5 days per week - Have adequate clearance between distal end and ground for necessary knee and foot components - Current Medicare Functional Classification Level (K-Level) of 2 as determined by the healthcare team - Socket-Comfort Score: 6 or above to ensure adequate socket fit - Six months or more experience on a prosthesis - Body weight between 50kg and 116kg (110lbs - 256lbs) - Height between 1.2m and 1.95m (47.2in and 76.8in) - Has a phone to answer periodic study calls Exclusion Criteria: - Present injuries to residual limb or contralateral leg affecting functional ability - Contralateral amputation proximal to MTP (metatarsophalangeal) joint - Socket issues/changes in the last 6 weeks - Users with bone-anchored implants - Health or medical condition, diagnosis, or other cause that would prevent participant from effectively following study protocol, performing required outcome measures, and/or completing the study Subjects can be excluded at the discretion of the investigator for other unforeseen disqualifying criteria (such as specific cognitive issues, etc.). If subjects experience a health or medical condition that leaves them immobile for more than 2 weeks, they may be given the option to restart the study condition upon recovery, as long as eligibility criteria is still met, and comparable baseline functionality is demonstrated with outcomes measures. Using a knee that the subject is unfamiliar with may increase the risk of falling. Therefore, pregnant women should not participate in the study and will be screened by self-disclosure. |
Country | Name | City | State |
---|---|---|---|
United States | Hanger Clinic | Austin | Texas |
Lead Sponsor | Collaborator |
---|---|
Liberating Technologies, Inc. | Hanger Clinic: Prosthetics & Orthotics |
United States,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Step count | Prior to each condition, each subject will be fit and aligned on the designated knee by a trained certified prosthetist. An activity monitor (such as the GeneActiv™) will be worn by the subject during each 3 month intervention period. Similar to prior studies, the investigators will use the activity monitor to track the number of steps the subjects take in each condition. A higher step count is a better outcome. | Monitored over entire study (9 months) | |
Primary | Activities-Specific Balance Confidence scale (ABC) - Measuring change from baseline | The ABC is a structured questionnaire that measures an individual's confidence during ambulatory activities without falling or experiencing a sense of unsteadiness. It consists of 16 questions gauging the individual's confidence while doing activities, from 0 (no confidence) to 4 (complete confidence). A higher score means a better outcome.
This survey will be given at the beginning and end of each study condition (3 conditions, 3 months per condition). Additionally, this survey will be given at the subject's last training session, which is dependent on the subject's scheduling availability and proficiency with each knee condition. The subject will have between 4-8 training sessions per condition until deemed proficient or the 8th session has been completed, whichever comes first. All training sessions are expected to be completed within the first month of each condition. This survey will be administered as a part of the master questionnaire. |
Throughout study completion, an average of 9 months | |
Primary | Prosthesis Evaluation Questionnaire - Well Being (PEQ-WB) - Measuring change from baseline | The version of the PEQ which will be administered consists of 2 questions in 1 category (well being). For purposes of easier administration, the investigators have adopted the modified 10-point ordinal scale version of the PEQ-WB (scale 1-10, where a higher score is a better outcome).
This survey will be given at the beginning and end of each study condition (3 conditions, 3 months per condition). Additionally, this survey will be given at the subject's last training session, which is dependent on the subject's scheduling availability and proficiency with each knee condition. The subject will have between 4-8 training sessions per condition until deemed proficient or the 8th session has been completed, whichever comes first. All training sessions are expected to be completed within the first month of each condition. This survey will be administered as a part of the master questionnaire. |
Throughout study completion, an average of 9 months | |
Secondary | Two Minute Walk Test (2MWT) - Measuring change from baseline | The 2MWT is a measure of self-paced walking ability and functional capacity, particularly for those who cannot manage the longer Six Minute Walk Test (6MWT) or 12 Minute Walk Test. Participants will walk a set circuit for a total of two minutes. The distance covered over a time of 2 minutes is used as the outcome by which to compare changes in performance capacity. This assessment may be performed at each site visit. | Throughout study completion, an average of 9 months | |
Secondary | Stair Assessment Index (SAI) | The Stair Assessment Index (SAI) is an observational outcome measure designed to assess an individual's ability to ascend and descend stairs. The SAI is a 14-level ordinal scale that spans a functional continuum from choosing not to ascend or descend the stairs to a fully independent step-over-step stair gait. A SAI rating is independently assigned to the activities of stair ascent and stair descent. These ratings reflect the individual's degree of independence and quality of movement in stair gait. The 14 ratings of the SAI are based on several central characteristics of stair gait including the ability to perform the task, the need for assistance, the use of an assistive device, and the gait style chosen to perform the task. A higher score means a better outcome. This assessment may be performed at each site visit. | Start of study (0 months), 3 months, 6 months, 9 months | |
Secondary | Timed Up and Go (TUG) Test | The Timed Up and Go (TUG) test may be used to measure physical mobility, assess fall risk, and predict prosthetic nonuse in patients with a lower-limb amputation who are using a prosthesis. In the timed up and go (TUG) test, subjects are asked to rise from a standard armchair, walk to a marker 3 m away, turn, walk back, and sit down again. The test is timed in seconds using a stopwatch. A lower time means a better outcome. The test is a reliable and valid test for quantifying functional mobility that may also be useful in following clinical change over time. This assessment may be performed at each site visit. | Throughout study completion, an average of 9 months total. | |
Secondary | Patient Reported Outcomes Measures Information System - Physical Function (PROMIS-PF) | The form being administered is PROMIS Physical Function short form 10b. PROMIS Physical Function (PROMIS PF) measures the outcome of patients or clients by assessing physical function through a grading scale of activities of daily living. PROMIS PF is used as an outcome in research on the effectiveness of interventions. The questions are answered on a scale from 1-5, with 1 being 'unable to do' and 5 being 'able to do without difficulty', pertaining to an activity. A higher score means a better outcome. This survey will be administered as a part of the master questionnaire. | Start of study (0 months), 3 months, 6 months, 9 months | |
Secondary | Prosthetic Limb Users Survey of Mobility (PLUS-M) 20 Item Custom Short Form - Measuring change from baseline | This version of the PLUS-M is a 20 item short form customized with a set of questions pertinent to the K2 population. The scores are directly comparable to other versions of the PLUS-M. Responses are scored from 1-5, with 1 being 'unable to do' and 5 being 'without any difficulty', pertaining to an activity. A higher score means a better outcome. The scores will be added together to make the 'raw score', which can then be translated to T-score, Standard Error, and percentile.
This survey will be given at the beginning and end of each study condition (3 conditions, 3 months per condition), as well as at the subject's last training session. The subject will have between 4-8 training sessions per condition until deemed proficient or the 8th session has been completed, whichever comes first. All training sessions are expected to be completed within the first month of each condition. This survey will be administered as a part of the master questionnaire. |
Throughout study completion, an average of 9 months total. | |
Secondary | Borg Rating of Perceived Exertion (Borg RPE) | The Borg Rating of Perceived Exertion (Borg RPE) is a way of measuring physical activity intensity level. Perceived exertion is how hard the participant feels like their body is working. The original scaling is from 6-20, corresponding to approximate heart rate (x10 beats per minute). The investigators will be using the adapted Borg CR10 scale, which scales from 0-10 (0=no exertion at all, 10=maximal exertion). A higher score means a worse outcome. | Start of study (0 months), 3 months, 6 months, 9 months | |
Secondary | Patient Reported Outcomes Measures Information System - Fatigue (PROMIS-FAT) | The form being administered is PROMIS Fatigue short form 8a. The PROMIS Fatigue item banks assess a range of self-reported symptoms, from mild subjective feelings of tiredness to an overwhelming, debilitating, and sustained sense of exhaustion that likely decreases one's ability to execute daily activities and function normally in family or social roles. Fatigue is divided into the experience of fatigue (frequency, duration, and intensity) and the impact of fatigue on physical, mental, and social activities. The fatigue short forms are universal rather than disease-specific. All assess fatigue over the past seven days. The questions are answered on a scale from 1-5, with 1 being "not at all" or "never", and 5 being "very much" or "always". A higher score means a worse outcome. This survey will be administered as a part of the master questionnaire. | Start of study (0 months), 3 months, 6 months, 9 months | |
Secondary | Self reported falls | The investigators will call the patient at most weekly to ask them whether they have experienced a recent fall. If the subject responds positively that they had a fall, follow-up questions may be asked via a standardized fall questionnaire similar to those used in prior studies to get more specific details. A higher number of falls means a worse outcome. The subject may be asked to provide additional notes periodically to document their problems, experiences, and feedback. | Throughout study completion, an average of 9 months total | |
Secondary | Patient Reported Outcomes Measures Information System - 29 (PROMIS-29) | The PROMIS-29 is a short form assessment containing four items from each of seven PROMIS domains (Depression, Anxiety, Physical Function, Pain Interference, Fatigue, Sleep Disturbance, and Ability to Participate in Social Roles and Activities) which are all scaled from 1-5 , plus one pain intensity question (0-10 numeric rating scale). This survey will be administered as a part of the master questionnaire.
For the Physical Function, Ability to Participate in Social Roles and Activities, and Cognitive Function domains, a higher score means a better outcome. For the Anxiety, Depression, Fatigue, Sleep Disturbance, Pain Interference, and Pain Intensity domains, a higher score means a worse outcome. |
Start of study (0 months), 3 months, 6 months, 9 months | |
Secondary | Oswestry Disability Index (ODI) | The Oswestry Disability Index is a tool that researchers and disability evaluators use to measure a patient's permanent functional disability. The patient is asked 10 questions, each with 6 possible answers. The answers are scored 0-5. The total score corresponds to disability level (no disability, mild disability, moderate disability, severe disability, completely disabled). A higher score means a worse outcome. This survey will be administered as a part of the master questionnaire. | Start of study (0 months), 3 months, 6 months, 9 months | |
Secondary | Patient Reported Outcomes Measures Information System - Ability to Participate in Social Roles and Activities (PROMIS-APSRA) | The PROMIS-APSRA is a short form that assesses an individual's perceived ability to perform their usual social roles and activities. The form being administered is PROMIS-APSRA short form 8a. The questions are answered on a scale from 1-5, with 1 being "never", and 5 being "always". A higher score means a better outcome. This survey will be administered as a part of the master questionnaire. | Start of study (0 months), 3 months, 6 months, 9 months |
Status | Clinical Trial | Phase | |
---|---|---|---|
Recruiting |
NCT03947450 -
Autologous Volar Fibroblast Injection Into the Stump Site of Amputees
|
Phase 2 | |
Completed |
NCT04924036 -
Qbrexza Cloths for Hyperhidrosis of Amputation Sites
|
Phase 2 | |
Recruiting |
NCT04839497 -
Multicenter Trial Evaluating the Safety and Efficacy of Autologous Volar Fibroblast Injection Into the Terminal Limb of Amputees.
|
Phase 2 | |
Recruiting |
NCT04212299 -
Transfemoral Socket Design and Muscle Function
|
N/A | |
Completed |
NCT03733054 -
Understanding Prosthetic Needs and Outcomes in Women Veterans With Amputation
|
||
Completed |
NCT03651830 -
A Test-Drive Strategy for the Prescription of Prosthetic Feet for People With Leg Amputations
|
N/A | |
Recruiting |
NCT04725006 -
Sensory Responses to Dorsal Root Stimulation
|
N/A | |
Not yet recruiting |
NCT06007885 -
Examining Capacity Building of Youth With Physical Disabilities to Pursue Participation Following the PREP Intervention.
|
N/A | |
Not yet recruiting |
NCT04936789 -
Clinical Feasibility of the IMES Transradial Prosthesis
|
N/A | |
Completed |
NCT01155024 -
Clinical Evaluation of Direct Manufactured Prosthetic Sockets
|
Phase 2 | |
Completed |
NCT00663663 -
Telephone Intervention for Pain Study (TIPS)
|
N/A | |
Terminated |
NCT00778856 -
Hand Transplantation for the Reconstruction of Below the Elbow Amputations
|
N/A | |
Recruiting |
NCT00388752 -
Acupuncture for the Treatment of Phantom Limb and Residual Limb Pain After Amputation
|
Phase 1 | |
Active, not recruiting |
NCT03374319 -
Somatotopic Configuration of Distal Residual Limb Tissues in Lower Extremity Amputations
|
N/A | |
Completed |
NCT05542901 -
Comparison of Joint Position Sense in Diabetic and Traumatic Transtibial Amputees
|
N/A | |
Completed |
NCT05161364 -
Kinetic Analysis Due to Foot Dysfunction
|
||
Completed |
NCT03570788 -
HRQoL Among Patients Amputated Due to Peripheral Arterial Disease
|
||
Completed |
NCT05778799 -
Physical Activity and Sports for People With Special Needs
|
||
Recruiting |
NCT04804150 -
Daily Socket Comfort in Transtibial Amputee With an Active Vacuum Suspension System
|
N/A | |
Terminated |
NCT03259386 -
Movement and Sensation for Advanced Prosthetic Hands
|