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Creating a Tissue Bank of Knee Capsules

22. april 2015 opdateret af: Dr. Guy Trudel, Ottawa Hospital Research Institute

Knee Joint Contractures: Reversibility and Molecular Pathways

A contracture is a pathological condition limiting range and function of joints. Contractures of large and small joints alike will affect one's ability to independently perform daily activities such as eating, dressing or walking. Current treatments for contractures include physical stretching, the use of assistive devices or, rarely, surgery. Despite prolonged treatments, patients with contractures rarely regain complete mobility. Progress in preventing and treating contractures will be possible only through an understanding of the biological and molecular processes involved. Our group has established and validated an animal model to study the histological events and the molecular mechanisms involved in joint contractures. We have provided evidence for capsule stiffness, characterized cartilage degeneration, and identified four genes whose expression is altered in the cartilage of a knee joint with contracture. The work we propose in the current study aims at finding genes and pathways in the joint capsule associated with knee joint contractures. The results will identify new avenues for treating the large number of patients suffering from contractures.

Studieoversigt

Status

Trukket tilbage

Detaljeret beskrivelse

We propose to constitute a bank of capsule samples from people with osteoarthritis undergoing primary total knee arthroplasty. It is expected that about 1.3% of people will develop a contracture post arthroplasty. A second sample will be taken from those that require surgery for release of contracture or revision. We will study histological characteristics and compare gene expression between the primary sample and the contracture sample in the same patient. In order to determine whether intrinsic genetic factors influence the develpment of joint contractures in the osteoarthritis population, all specimens will be analyzed for differential gene expression between patients with and without knee contractures post arthroplasty.

The remaining capsule tissue not used for this study will be banked and made available to other researchers.

Undersøgelsestype

Observationel

Kontakter og lokationer

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

Studiesteder

    • Ontario
      • Ottawa, Ontario, Canada, K1H 8M2
        • The Ottawa Hospital

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 og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Prøveudtagningsmetode

Sandsynlighedsprøve

Studiebefolkning

All patients booked for a total knee arthroplasty at the Ottawa Hospital, with a primary diagnosis of osteoarthritis.

Beskrivelse

Inclusion Criteria:

  • Osteoarthritis, booked for a total knee arthroplasty

Exclusion Criteria:

  • Transmissible disease (e.g., HIV infection, hepatitis B or C)
  • Suspected neoplasia
  • Suspected infection (which can cause arthrofibrosis)
  • Hypertrophic scarring

Studieplan

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

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

Kohorter og interventioner

Gruppe / kohorte
osteoarthritis, total knee arthroplasty
The main cohort will have a total knee arthroplasty and will not develop a contracture post surgery. We will analyze differntial gene expression in all subjects.
contracture post arthroplasty
A small group (1.3%) will develop a contracture post total knee arthroplasty. A second sample will be taken at the time of corrective surgery. The 2 samples will be compared for gene expression in the same subject. This group will also be compared to the main cohort for differential gene expression.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
development of contracture post total knee arthroplasty
Tidsramme: Within 1 year
1.3% of subjects are expected to develop a contracture post toal knee arthroplasty within a year of the surgery.
Within 1 year

Samarbejdspartnere og efterforskere

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

Efterforskere

  • Ledende efterforsker: Guy Trudel, MD, University of Ottawa

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

1. marts 2011

Primær færdiggørelse (Faktiske)

1. april 2015

Studieafslutning (Faktiske)

1. april 2015

Datoer for studieregistrering

Først indsendt

18. marts 2011

Først indsendt, der opfyldte QC-kriterier

18. marts 2011

Først opslået (Skøn)

22. marts 2011

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Skøn)

23. april 2015

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

22. april 2015

Sidst verificeret

1. april 2015

Mere information

Begreber relateret til denne undersøgelse

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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