Effectiveness and Cost-effectiveness of Lower Limb Prostheses
Comparing the Effectiveness and Cost-effectiveness of Conventional Mechanical Knees and Microprocessor-controlled Knees: a Prospective Cohort Study
1 other identifier
observational
28
1 country
9
Brief Summary
The goal of this observational study is to investigate the effectiveness of NMPKs versus MPKs in persons with an LLA in the standard healthcare system in the Netherlands taking all levels of the ICF model into account. Our main aim is to assess the effect of MPK use compared to NMPK use on walking distance, as this is one of the most used outcome variables in literature and thus enables comparison with previous studies. Our secondary aim is to investigate the effect of NMPKs versus MPKs on all ICF-levels: body structures and function, activities and participation. Participants will be seen four times in a year. During these measurement moments they will:
- Perform two physical tests
- Fill out a set of questionnaires
- Wear an activity tracker for one week
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at below P25 for all trials
Started Jun 2021
Longer than P75 for all trials
9 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
Study Start
First participant enrolled
June 1, 2021
CompletedFirst Submitted
Initial submission to the registry
August 23, 2023
CompletedFirst Posted
Study publicly available on registry
September 11, 2023
CompletedPrimary Completion
Last participant's last visit for primary outcome
December 31, 2024
CompletedStudy Completion
Last participant's last visit for all outcomes
March 31, 2025
CompletedMay 16, 2024
May 1, 2024
3.6 years
August 23, 2023
May 15, 2024
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
6 Minute Walking Test (6MWT)
The 6-minute walk test is used to measure functional capacity. The maximum distance a participant can walk within 6 minutes is measured. The course can be 10, 30 or 50 meters. The participant can use their walking aid if needed.
This test takes 6 minutes and is performed at T0 (week 1 after inclusion), T1 (week 7 after inclusion), T2 (week 12 after inclusion) and T3 (week 52 after inclusion)
Secondary Outcomes (7)
Short Questionnaire to Assess Health-enhancing physical activity (SQUASH)
Participants were asked to fill out the questionnaire at T0 (week 1 after inclusion), T1 (week 7 after inclusion) and T3 (week 52 after inclusion), with a normal/standard week for them in mind.
Timed Up and Go test (TUGtest)
This test is performed at T0 (week 1 after inclusion), T1 (week 7 after inclusion), T2 (week 12 after inclusion) and T3 (week 52 after inclusion). It can take up to three minutes.
Activities-Specific Balance Confidence Scale Nederlands (ABC-NL)
Participants were asked to fill out the questionnaire at T0 (week 1 after inclusion), T1 (week 7 after inclusion) and T3 (week 52 after inclusion), based on their current situation that day.
Cost-questionnaire
At T0 (week 1 after inclusion) and T3 (week 52 after inclusion), participants were asked to fill out the questionnaire over a retrospective period of six months.
Prosthesis Evaluation Questionnaire (PEQ)
Participants were asked to fill out the questionnaire at T0 (week 1 after inclusion), T1 (week 7 after inclusion) and T3 (week 52 after inclusion) over a retrospective period of four weeks.
- +2 more secondary outcomes
Interventions
Microprocessor controlled knee
Eligibility Criteria
We included adult participants with a unilateral transfemoral amputation or knee-disarticulation who were using a prosthesis with a CMK, but were eligible for a trial on an MPK.
You may qualify if:
- At least one year post amputation
- Unilateral transfemoral amputation or knee-disarticulation
- Eligible for a trial on an MPK
- Able to read and write in Dutch
- Use a prosthesis with a socket
You may not qualify if:
- Bilateral amputation
- Osseointegration
- Previous experience with an MPK
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (9)
Revant medisch specialistische revalidatie
Breda, Netherlands
Revalidatiecentrum Roessingh
Enschede, Netherlands
Revant medisch specialistische revalidatie | Lindenhof
Goes, Netherlands
University Medical Center Groningen
Groningen, Netherlands
Adelante zorggroep
Hoensbroek, Netherlands
Rijndam Revalidatie
Rotterdam, Netherlands
De Hoogstraat Revalidatie
Utrecht, Netherlands
Heliomare Centrum voor Specialistische Revalidatie
Wijk aan Zee, Netherlands
Vogellanden, centrum voor medisch specialistische revalidatie, bijzondere tandheelkunde en gezonde leefstijl
Zwolle, Netherlands
Central Study Contacts
Study Design
- Study Type
- observational
- Observational Model
- COHORT
- Time Perspective
- PROSPECTIVE
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
August 23, 2023
First Posted
September 11, 2023
Study Start
June 1, 2021
Primary Completion
December 31, 2024
Study Completion
March 31, 2025
Last Updated
May 16, 2024
Record last verified: 2024-05