Personalizing MPK Prescription

NCT ID: NCT06399471

Last Updated: 2024-11-14

Study Results

Results available

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

11 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-10-25

Study Completion Date

2023-10-02

Brief Summary

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In current clinical prosthetic practice, there is no evidence based method for selecting a microprocessor knee (MPK) joint for a patient with an above the knee amputation. Of individuals with amputation in veteran and service member populations, approximately 35% present with an above the knee amputation. It is well understood in clinical practice that MPKs provide numerous benefits to patients with amputations above the knee including improved gait, safety, comfort, confidence, reduced falls, balance, patient satisfaction and reduced energy expenditure, greater ease in negotiating varying terrains, improvements in multi-tasking and cost effectiveness. Studies that have investigated commercially available MPKs tend to lump all of them together within a single group rather than teasing out individual differences between each knee. Therefore, clinicians are left to rely on their own intuition and past experiences with an MPK when selecting for a patient with an above the knee amputation rather than making their decision based on evidence collected from the specific patient. This may mean that some individuals with an above the knee amputation may not be receiving the best component for them which may delay or inhibit their rehabilitation potential following their amputation.

Detailed Description

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Conditions

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Transfemoral Amputation

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

OTHER

Blinding Strategy

NONE

Study Groups

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Study Microprocessor Prosthetic Knee

Randomization to C-Leg 4.0, Rheo Knee and Power Knee

Group Type EXPERIMENTAL

Microprocessor prosthetic knee

Intervention Type DEVICE

Microprocessor prosthetic knees for use in a transfemoral prosthesis

Interventions

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Microprocessor prosthetic knee

Microprocessor prosthetic knees for use in a transfemoral prosthesis

Intervention Type DEVICE

Other Intervention Names

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C-Leg Power Knee Rheo

Eligibility Criteria

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Inclusion Criteria

* A unilateral transfemoral amputation of the lower limb at least six months post fitting of definitive lower extremity prosthesis
* Habitual use of a lower extremity prosthesis in daily living activities (based on assessment of a physiatrist and/or prosthetist and patient self-report)
* Aged between 18 to 75 years
* K3 or K4 level ambulators who can perform all locomotor tasks of interest (based on assessment of a physiatrist and/or prosthetist)

Exclusion Criteria

* Individuals with any significant neuromuscular or musculoskeletal disorder or other comorbidity that would interfere with participation (based on assessment of the physiatrist and/or prosthetist and patient self-report)
* Individuals who have open wounds on their residual limb
* Individuals with known visual impairments that would prevent them from safely operating a prosthesis during over ground walking or ascending stairs (based on assessment of the physiatrist and/or prosthetist and patient self-report)
* Individuals with known hearing impairments or who use hearing aids that would prevent them from responding to an auditory instruction (based on assessment of the physiatrist and/or prosthetist and patient self-report)
* Individuals who are currently pregnant (based on patient self-report) due to slight risk of falling during experiments
Minimum Eligible Age

18 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Georgia Institute of Technology

OTHER

Sponsor Role lead

Responsible Party

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Kinsey Herrin

Senior Research Scientist

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Georgia Institute of Technology

Atlanta, Georgia, United States

Site Status

Countries

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United States

References

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Herrin K, Kestur S, Zhou S, O'Sullivan G, Snow T, Childers WL, Young A. Toward personalizing prosthesis prescription: A take-home study of three microprocessor-controlled prosthetic knees: A randomized crossover study. PM R. 2025 Oct 24. doi: 10.1002/pmrj.70028. Online ahead of print.

Reference Type DERIVED
PMID: 41133928 (View on PubMed)

Provided Documents

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Document Type: Study Protocol and Statistical Analysis Plan

View Document

Document Type: Informed Consent Form

View Document

Other Identifiers

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W81XWH-21-1-0686

Identifier Type: OTHER_GRANT

Identifier Source: secondary_id

H21008

Identifier Type: -

Identifier Source: org_study_id

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