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Training Independent Muscle Activation From a Common Source

15. september 2026 opdateret af: Matthew Carty, Brigham and Women's Hospital

In this study, the investigators are evaluating a new surgical technique that may allow participants to control their muscles in a new way after their amputation or revision surgery. The investigators are looking for people who have limb amputation or require a revision operation to a previous amputation. Participants must be over 18 and younger than 65, willing to begin participation within two weeks of their surgery, and be willing to travel regularly to Boston.

In this study, participants will have a modified revision procedure on their amputated limb or a modified amputation procedure, followed by a series of follow up visits in clinic and to a gait lab at Harvard. Participants will also use a wearable device on their limb at home to complete daily training tasks and games.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

10

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Studiesteder

  • Forenede Stater
    • Massachusetts
      • Boston, Massachusetts, Forenede Stater, 02115
        • Rekruttering
        • Brigham and Women's Hospital
        • Kontakt:
      • Cambridge, Massachusetts, Forenede Stater, 02138

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år til 65 år (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • Age 18-65
  • Fluent in English
  • Approved for and scheduled to undergo acute amputation or revision amputation surgery (e.g. above-knee amputation with sciatic nerve ablation) OR sciatic nerve ablation for clinical indications (e.g. persistent pain, symptomatic neuroma, soft tissue breakdown, muscle atrophy, socket-related discomfort).
  • Willing and able to initiate participation within 14 days of surgery
  • Willing to perform at home studies
  • Possess adequate cognitive and communication abilities to describe their sensorimotor recovery during follow-up assessments
  • Demonstrate appropriate motivation and reliability to comply with scheduled training and evaluation sessions throughout the postoperative period
  • Able to travel to BWH/BWFH and Harvard University for all required visits without lodging support

Exclusion Criteria:

  • • Passive or active metal implants incompatible with EMG

    • Pacemakers, deep brain stimulators, or other electronic implantables
    • Pregnancy or breastfeeding
    • Current seizure disorder or other neurologically limiting conditions
    • Cognitive or developmental disorders that limit task comprehension
    • Vascular disorders impeding regeneration
    • Known impairments in wound healing, including connective tissue disorders or under chronic systemic corticosteroid therapy
    • Extensive peripheral neuropathies that may hinder neural regeneration and functional RPNI development
    • Active smoker
    • Are unable to provide informed consent
    • Have a demonstrated history of poor protocol adherence
    • Pregnant at the time of screening

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Andet
  • Tildeling: N/A
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Surgical Intervention - RPNI Construction

Subjects undergoing the proposed operative intervention with associated follow up testing
Procedure: amputation or revision procedure with additional RPNI construction

amputation or revision procedure in which additional RPNIs (regenerative peripheral nerve interfaces) are created beyond what would be included in a standard care procedure

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Co-Contraction Interference Measure
Tidsramme: from operative intervention to 12 months postop

Degree of co-contraction interference or crosstalk between RPNIs, modeled by fitting an exponential decay fit to task error over time or repetitions
from operative intervention to 12 months postop

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Task Performance Measure - Success Rate
Tidsramme: from operative intervention to 12 months postop

Task success rate, measured by the mean squared error between intended and actual movement paths.
from operative intervention to 12 months postop
Task Performance Measure - Speed
Tidsramme: immediately post intervention to 12 months postop

Task completion speed, measured by the mean squared error between intended and actual movement
immediately post intervention to 12 months postop
Task Performance Measure - Participant Controllability
Tidsramme: immediately post intervention to 12 months postop

Participant controllability over task, measured by the mean squared error between intended and actual movement paths.
immediately post intervention to 12 months postop

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Brigham and Women's Hospital

Samarbejdspartnere

Harvard University

Efterforskere

  • Ledende efterforsker: Matthew J Carty, MD, Brigham and Women's Hospital
  • Ledende efterforsker: Shriya Srinivasan, PhD, Harvard University

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Anslået)

1. september 2026

Primær færdiggørelse (Anslået)

31. august 2028

Studieafslutning (Anslået)

31. august 2028

Datoer for studieregistrering

Først indsendt

1. september 2026

Først indsendt, der opfyldte QC-kriterier

15. september 2026

Først opslået (Faktiske)

21. september 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

21. september 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

15. september 2026

Sidst verificeret

1. september 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • 2025P002165

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ingen

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

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