NCT02541552

Brief Summary

Adductor canal block is commonly offered to provide pain relief following knee surgery with the hope that they cause less leg weakness than traditionally performed femoral nerve block. Infrequently, adductor canal blocks also result in leg weakness thereby potentially limiting the advantages of the technique. Investigators want to find out the effective dose for a 30% response (volume of local anesthetic which would result in clinically significant weakness of the leg)

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
26

participants targeted

Target at below P25 for phase_3 postoperative-pain

Timeline
Completed

Started Apr 2015

Shorter than P25 for phase_3 postoperative-pain

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

March 17, 2015

Completed
15 days until next milestone

Study Start

First participant enrolled

April 1, 2015

Completed
5 months until next milestone

First Posted

Study publicly available on registry

September 4, 2015

Completed
2 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

November 1, 2015

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

November 1, 2015

Completed
Last Updated

August 25, 2016

Status Verified

August 1, 2016

Enrollment Period

7 months

First QC Date

March 17, 2015

Last Update Submit

August 24, 2016

Conditions

Keywords

Knee arthroscopyQuadriceps weaknessropivacainesaphenous nerve blockAdductor canal

Outcome Measures

Primary Outcomes (1)

  • The primary outcome will be the EV50 of anesthetic volume needed to produce >30% reduction of pre-injectate quadriceps strength at 20 minutes following adductor canal block.

    Measured by handheld dynamometer

    Percentage difference before block and at 20minutes

Secondary Outcomes (2)

  • Reduced sensation to pin-prick around the anteromedial aspect of the knee

    20 minutes post-block

  • Post-operative quadriceps muscle function

    Percentage difference before block and at 4 hours following block

Study Arms (1)

Knee arthroscopic patient

EXPERIMENTAL

1\) Male and females 2) Age 16-60 years 3) Scheduled surgery 4) Knee arthroscopy 5) ASA Class I - III Volume finding study to follow up-and-down design using a single cohort of patients. Intervention of patient will be dependent on effect of previous patients dose of and response to Ropivacaine 0.5% injectate.

Drug: Ropivacaine 0.5%

Interventions

Varying volume according to motor response of previous subject

Also known as: Naropin
Knee arthroscopic patient

Eligibility Criteria

Age16 Years - 60 Years
Sexall
Healthy VolunteersYes
Age GroupsChild (0-17), Adult (18-64)

You may qualify if:

  • Male and females
  • Age 16-60 years
  • Scheduled surgery
  • Knee arthroscopy
  • ASA Class I - III

You may not qualify if:

  • Ipsi- or contralateral leg weakness
  • Preoperative neurological deficits
  • Narcotic dependent (opioid intake more than 3 months)
  • Chronic pain conditions
  • Significant cardiac and respiratory disease
  • Coexisting hematological disorder or with deranged coagulation parameters
  • Pre-existing major organ dysfunction such as hepatic and renal failure.
  • Psychiatric illnesses
  • Emergency surgery
  • Lack of informed consent
  • Allergy to any of the drugs used in the study

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

LHSC University Hospital

London, Ontario, N6G 2V4, Canada

Location

Related Publications (13)

  • Hanson NA, Derby RE, Auyong DB, Salinas FV, Delucca C, Nagy R, Yu Z, Slee AE. Ultrasound-guided adductor canal block for arthroscopic medial meniscectomy: a randomized, double-blind trial. Can J Anaesth. 2013 Sep;60(9):874-80. doi: 10.1007/s12630-013-9992-9. Epub 2013 Jul 3.

    PMID: 23820968BACKGROUND
  • Akkaya T, Ersan O, Ozkan D, Sahiner Y, Akin M, Gumus H, Ates Y. Saphenous nerve block is an effective regional technique for post-menisectomy pain. Knee Surg Sports Traumatol Arthrosc. 2008 Sep;16(9):855-8. doi: 10.1007/s00167-008-0572-4. Epub 2008 Jun 24.

    PMID: 18574578BACKGROUND
  • Rawal N. Postoperative pain treatment for ambulatory surgery. Best Pract Res Clin Anaesthesiol. 2007 Mar;21(1):129-48. doi: 10.1016/j.bpa.2006.11.005.

    PMID: 17489224BACKGROUND
  • Jaeger P, Nielsen ZJ, Henningsen MH, Hilsted KL, Mathiesen O, Dahl JB. Adductor canal block versus femoral nerve block and quadriceps strength: a randomized, double-blind, placebo-controlled, crossover study in healthy volunteers. Anesthesiology. 2013 Feb;118(2):409-15. doi: 10.1097/ALN.0b013e318279fa0b.

    PMID: 23241723BACKGROUND
  • Kim DH, Lin Y, Goytizolo EA, Kahn RL, Maalouf DB, Manohar A, Patt ML, Goon AK, Lee YY, Ma Y, Yadeau JT. Adductor canal block versus femoral nerve block for total knee arthroplasty: a prospective, randomized, controlled trial. Anesthesiology. 2014 Mar;120(3):540-50. doi: 10.1097/ALN.0000000000000119.

    PMID: 24401769BACKGROUND
  • Muraskin SI, Conrad B, Zheng N, Morey TE, Enneking FK. Falls associated with lower-extremity-nerve blocks: a pilot investigation of mechanisms. Reg Anesth Pain Med. 2007 Jan-Feb;32(1):67-72. doi: 10.1016/j.rapm.2006.08.013.

    PMID: 17196495BACKGROUND
  • Mayr HO, Entholzner E, Hube R, Hein W, Weig TG. Pre- versus postoperative intraarticular application of local anesthetics and opioids versus femoral nerve block in anterior cruciate ligament repair. Arch Orthop Trauma Surg. 2007 May;127(4):241-4. doi: 10.1007/s00402-006-0147-0. Epub 2006 May 23.

    PMID: 16721618BACKGROUND
  • Chen J, Lesser JB, Hadzic A, Reiss W, Resta-Flarer F. Adductor canal block can result in motor block of the quadriceps muscle. Reg Anesth Pain Med. 2014 Mar-Apr;39(2):170-1. doi: 10.1097/AAP.0000000000000053.

    PMID: 24553306BACKGROUND
  • Veal C, Auyong DB, Hanson NA, Allen CJ, Strodtbeck W. Delayed quadriceps weakness after continuous adductor canal block for total knee arthroplasty: a case report. Acta Anaesthesiol Scand. 2014 Mar;58(3):362-4. doi: 10.1111/aas.12244. Epub 2013 Dec 26.

    PMID: 24372058BACKGROUND
  • Holm B, Kristensen MT, Bencke J, Husted H, Kehlet H, Bandholm T. Loss of knee-extension strength is related to knee swelling after total knee arthroplasty. Arch Phys Med Rehabil. 2010 Nov;91(11):1770-6. doi: 10.1016/j.apmr.2010.07.229.

    PMID: 21044725BACKGROUND
  • Bohannon RW, Kindig J, Sabo G, Duni AE, Cram P. Isometric knee extension force measured using a handheld dynamometer with and without belt-stabilization. Physiother Theory Pract. 2012 Oct;28(7):562-8. doi: 10.3109/09593985.2011.640385. Epub 2011 Dec 22.

    PMID: 22191509BACKGROUND
  • Jaeger P, Zaric D, Fomsgaard JS, Hilsted KL, Bjerregaard J, Gyrn J, Mathiesen O, Larsen TK, Dahl JB. Adductor canal block versus femoral nerve block for analgesia after total knee arthroplasty: a randomized, double-blind study. Reg Anesth Pain Med. 2013 Nov-Dec;38(6):526-32. doi: 10.1097/AAP.0000000000000015.

    PMID: 24121608BACKGROUND
  • Johnston DF, Sondekoppam RV, Giffin R, Litchfield R, Ganapathy S. Determination of ED50 and ED95 of 0.5% Ropivacaine in Adductor Canal Block to Produce Quadriceps Weakness: A Dose-Finding Study. Reg Anesth Pain Med. 2017 Nov/Dec;42(6):731-736. doi: 10.1097/AAP.0000000000000638.

MeSH Terms

Conditions

Pain, Postoperative

Interventions

Ropivacaine

Condition Hierarchy (Ancestors)

Postoperative ComplicationsPathologic ProcessesPathological Conditions, Signs and SymptomsPainNeurologic ManifestationsSigns and Symptoms

Intervention Hierarchy (Ancestors)

AnilidesAmidesOrganic ChemicalsAniline CompoundsAmines

Study Design

Study Type
interventional
Phase
phase 3
Allocation
NA
Masking
NONE
Purpose
DIAGNOSTIC
Intervention Model
SINGLE GROUP
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

March 17, 2015

First Posted

September 4, 2015

Study Start

April 1, 2015

Primary Completion

November 1, 2015

Study Completion

November 1, 2015

Last Updated

August 25, 2016

Record last verified: 2016-08

Locations