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Analgesic Benefits of Genicular Nerve Blocks of the Posterior Knee for Patients Undergoing ACL Reconstruction

8. marts 2017 opdateret af: Rohit Rahangdale, Northwestern University

Analgesic Benefits of Genicular Nerve Blocks of the Posterior Knee for Patients Undergoing Anterior Cruciate Ligament (ACL) Reconstruction

Outpatients scheduled to have ACL surgery typically receive a femoral nerve block to provide analgesia for the front of the knee. Postoperatively, these patients will often report pain in the back of the knee. Local anesthetic infiltration of the posterior aspect of the knee results in blockade of the genicular nerves of the posterior knee. These nerves originate off of the tibial and common peroneal nerves and their blockade will result in improved posterior knee pain relief and may decrease narcotic consumption compared to patients who receive the same infiltration with normal saline.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Femoral nerve blocks are commonly used to provide postoperative analgesia for ACL surgery. The limitation of these blocks is the incomplete analgesia they provide of the knee joint subjecting the patient to posterior knee pain. As a result, some of these patients receive rescue sciatic blocks in the postoperative care unit to cover posterior knee pain. The sciatic block provides excellent analgesia for the posterior knee; however its blockade invariably affects other territories of the sciatic nerve such as the lower leg and foot. For ACL surgery, the loss of sensation and/or motor strength to this area is unnecessary and may make ambulation more difficult. The ability to ambulate with minimal assistance may be more important for a patient undergoing an outpatient surgery when compared to an inpatient surgery.

At the posterior knee, the sciatic nerve branches off into the tibial and common peroneal nerves which give rise to sensory fibers that innervate the posterior knee. We propose targeting these terminal fibers in the popliteal fossa by infiltrating local anesthetic between the distal femoral shaft and popliteal artery thereby providing posterior knee analgesia without affecting the lower leg.This application of this block has not been studied in patients having ACL surgery. A single interim analysis is scheduled after the data for 50 cases are available.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

18

Fase

  • Fase 4

Kontakter og lokationer

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

Studiesteder

  • Forenede Stater
    • Illinois
      • Chicago, Illinois, Forenede Stater, 60611
        • Northwestern University Feinberg School of Medicine

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 70 år (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  1. patients who are presenting for ACL reconstruction
  2. candidates for peripheral nerve blocks patients
  3. ASA 1-3

Exclusion Criteria:

  1. Patient refusal
  2. ASA Classification of 4 or higher
  3. Pre-existing neuropathy in the femoral or sciatic distribution
  4. Coagulopathy
  5. Infection at the site
  6. Non-English speaking or non-reading patients
  7. Chronic opioid use (>3months)
  8. Pregnancy
  9. Any other contra-indication to regional anesthesia
  10. Failed femoral nerve block
  11. Sciatic nerve block placed due to severe pain not managed by intravenous and oral agents.

Studieplan

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

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Forebyggelse
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Firedobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Aktiv komparator: Study Drug
Ultrasound guided posterior genicular nerve infiltration with 30mL of Bupivicaine 0.20% with epinephrine 1:300,000 (Study Drug)
Medicin: Bupivacaine
30mL of Bupivicaine 0.20% with epinephrine 1:300,000
Andre navne:
  • Marcaine
Sham-komparator: Preservative free normal saline
Ultrasound guided posterior genicular nerve infiltration posterior knee with 30mL of preservative free normal saline
Medicin: Preservative free normal saline
Ultrasound guided posterior genicular nerve infiltration posterior knee with 30mL of preservative free normal saline
Andre navne:
  • 0,9% natriumchlorid

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Opioid Consumption
Tidsramme: 24 hours
Opioid consumption (mg morphine equivalents)
24 hours

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Pain Score
Tidsramme: Pain Burden at 24hrs
Numeric Rating Scale (NRS) (NRS pain scores; 0 = no pain,10 = excruciating pain) in the back of the knee recorded every 4 hours up to 24hrs following surgery. Pain Bruden scale ranges from 0 (no pain) to 240 (extreme pain). For example, pain burden of 120 is equivalent to a NRS score of 5 out of 10.
Pain Burden at 24hrs
Patient Satisfaction
Tidsramme: 24hr
Patient satisfaction with pain control scale ranges from 0 (no satisfaction) to 10 (very satisfied).
24hr
Quality of Recovery (QoR15)
Tidsramme: 24hrs
Quality of recovery (QoR15) is a questionnaire that asks 15 questions regarding how the participant has felt in the last 24 hours. Each question is followed by an 11-point numerical rating scale (0 = "none of the time" to 10 = "all of the time"; maximum score 150). The higher the QoR15 total score, the worse the quality of recovery reported.
24hrs

Samarbejdspartnere og efterforskere

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

Sponsor

Northwestern University

Efterforskere

  • Ledende efterforsker: Rohit Rahangdale, M.D., Northwestern University Feinberg School of Medicine

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 (Faktiske)

1. december 2013

Primær færdiggørelse (Faktiske)

1. november 2015

Studieafslutning (Faktiske)

1. december 2015

Datoer for studieregistrering

Først indsendt

6. december 2013

Først indsendt, der opfyldte QC-kriterier

10. december 2013

Først opslået (Skøn)

11. december 2013

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

19. april 2017

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

8. marts 2017

Sidst verificeret

1. marts 2017

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • STU00085894

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

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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