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Saphenous Nerve Block Versus Femoral Nerve Block for Total Knee Arthroplasty

19. april 2022 opdateret af: Hospital for Special Surgery, New York

Saphenous (Adductor Canal) Nerve Block Versus Femoral Nerve Block for Total Knee Arthroplasty: A Novel Approach for Postoperative Analgesia

Currently, the regional anesthetic standard of care for total knee replacement surgery is combined spinal/epidural, with or without a femoral nerve block, or FNB. Lasting approximately 18 hours, the FNB works by numbing the femoral nerve (and its branches), which is the major nerve controlling the knee joint. The femoral nerve also provides movement and sensation. While this regional anesthetic technique offers significant postoperative pain relief, it is possible that it may cause muscle weakness and increase patients' recovery time. Hence there is a need for an alternative technique, one that may help minimize postoperative pain as effectively as the FNB, while not causing weakness of the quadriceps muscle.

The saphenous nerve, a branch of the femoral nerve, provides sensation to the knee. Thus it is hypothesized that by "blocking" or anesthetizing the saphenous nerve with local anesthetic closer to where it branches off, the area around and below the knee will feel numb. Yet unlike with the FNB, the quadriceps muscle itself will still be able to function.

Patients will be randomized to receive FNB or saphenous nerve block. Quadriceps strength will be tested using a dynamometer before surgery (baseline), 6-8 hours following anesthesia administration, and on postoperative days 1 and 2. It is hypothesized that patients who receive FNB will experience a 50% decrease in quadriceps strength compared to baseline.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

94

Fase

  • Ikke anvendelig

Kontakter og lokationer

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

Studiesteder

  • Forenede Stater
    • New York
      • New York, New York, Forenede Stater, 10021
        • Hospital for Special Surgery

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 90 år (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • All patients ages 18-90 undergoing primary unilateral total knee arthroplasty
  • Planned use of neuraxial anesthesia
  • Ability to follow study protocol
  • American Society of Anesthesiology (ASA) Class 1-3

Exclusion Criteria:

  • Contraindication to a spinal or epidural anesthetic
  • Chronic opioid use (defined as daily or almost daily use of opioids for >3 months)
  • Hypersensitivity and/or allergy to local anesthetics
  • Intraoperative use of any volatile anesthetic
  • Patients with a pre-existing neuropathy on the operative limb
  • Contraindication to a femoral nerve block or saphenous nerve block
  • Allergy to any of the study medications
  • Non-English speaking patients

Studieplan

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

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Dobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Experimental
Saphenous (Adductor Canal) Nerve Block
Procedure: Study Group: Experimental
The study group will receive the saphenous nerve block, at the level of the adductor canal. The block will be under ultrasound guidance. The local anesthetic will be 15 ml of 0.5% bupivicaine. The study group will also receive a combined spinal epidural, with 2.5 ml of 0.5% bupivacaine as the spinal agent. Additional drugs include anti-emetics, specifically Ondansetron (4 mg).
Andre navne:
  • Saphenous (Adductor Canal) Nerve Block
Aktiv komparator: Control
Femoral Nerve Block
Procedure: Control Group
The control group will receive the femoral nerve block. The block will be under ultrasound guidance. The local anesthetic will be 30 ml of 0.25% bupivicaine. The control group will also receive a combined spinal epidural, with 2.5 ml of 0.5% bupivacaine as the spinal agent. Additional drugs include anti-emetics, specifically Ondansetron (4 mg).
Andre navne:
  • Femoral nerveblok

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Quadriceps Muscle Strength
Tidsramme: 48 hours following administration of anesthesia.
Measurements were made by a handheld dynamometer while patients perform isometric exercises. Results are presented in kilogram-force (kgF) units. One kgF is equal to 9.80665 N.
48 hours following administration of anesthesia.

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Total Opioid Usage
Tidsramme: Postoperative day 4.
Opioid consumption data were collected and converted to oral morphine equivalents.
Postoperative day 4.
NRS Pain Scores at Rest
Tidsramme: Postoperative day 4.
Patients rated pain on a scale of 0-10, with 0 representing no pain and 10 representing worst pain.
Postoperative day 4.
Patient Satisfaction With the Nerve Block.
Tidsramme: 24 hours following administration of anesthesia.
Patient satisfaction was measured on a 0-10 scale (0=not satisfied; 10=very satisfied).
24 hours following administration of anesthesia.
Incidence of Postoperative Complications.
Tidsramme: Postoperative day 4.
Postoperative day 4.
Total Length of Hospital Stay
Tidsramme: Total length of hospital stay
Total length of hospital stay

Samarbejdspartnere og efterforskere

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

Sponsor

Hospital for Special Surgery, New York

Efterforskere

  • Ledende efterforsker: David H. Kim, MD, Hospital for Special Surgery, New York

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Generelle publikationer

Hjælpsomme links

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. november 2011

Studieafslutning (Faktiske)

1. november 2011

Datoer for studieregistrering

Først indsendt

8. april 2011

Først indsendt, der opfyldte QC-kriterier

11. april 2011

Først opslået (Skøn)

12. april 2011

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

11. maj 2022

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

19. april 2022

Sidst verificeret

1. april 2022

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Andre undersøgelses-id-numre

  • 2012-031

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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Kliniske forsøg med Study Group: Experimental

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