NCT03645954

Brief Summary

This prospective, double-blinded, randomized controlled study evaluates effects of femoral triangle and adductor canal blocks in comparison with femoral nerve block for primary total knee arthroplasty. Patients undergoing primary total knee arthroplasty will be randomly assigned to receive either femoral triangle and adductor canal blocks or femoral nerve block. Comparison of these two groups of patients will be based on the effects on postoperative pain control, extent of motor blockade, ability of early ambulation, patients satisfaction rates over the time of clinical recovery and the length of hospitalization. To the investigator's knowledge, no comparison has been made between femoral triangle and adductor canal blocks and femoral nerve block or any other block. Consequently, we hypothesized that femoral triangle and adductor canal blocks and femoral nerve block provide similar effects on postoperative pain control, but femoral triangle and adductor canal blocks are superior to femoral nerve block in terms of early postoperative mobilization.

Trial Health

87
On Track

Trial Health Score

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

Enrollment
80

participants targeted

Target at P50-P75 for not_applicable

Timeline
Completed

Started Aug 2018

Shorter than P25 for not_applicable

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

August 15, 2018

Completed
9 days until next milestone

First Posted

Study publicly available on registry

August 24, 2018

Completed
4 days until next milestone

Study Start

First participant enrolled

August 28, 2018

Completed
9 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

May 31, 2019

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

May 31, 2019

Completed
1.6 years until next milestone

Results Posted

Study results publicly available

January 13, 2021

Completed
Last Updated

February 3, 2021

Status Verified

January 1, 2021

Enrollment Period

9 months

First QC Date

August 15, 2018

Results QC Date

November 23, 2020

Last Update Submit

January 13, 2021

Conditions

Keywords

Femoral triangle blockAdductor canal blockFemoral nerve blockPrimary total knee arthroplastyPain managementFunctional recovery

Outcome Measures

Primary Outcomes (2)

  • Extent of Motor Blockade

    The extent of postoperative motor blockade will be evaluated using Bromage scale: Grade I - free movement of legs and feet, Grade II - just able to flex knees with free movement of feet, Grade III - unable to flex knees, but with free movement of feet, Grade IV - unable to move legs or feet. It will be assessed at 3, 6, 24, 48 hours after surgery.

    3, 6, 24, 48 hours after primary total knee arthroplasty.

  • Postoperative Pain Intensity and Pain Control

    Postoperative pain intensity and pain control will be assessed in both groups using visual analogue scale (VAS). VAS scale is consisted of a scale from 0 (no pain) to 10 (worst imaginable pain). Pain control and pain intensity will be assessed at rest, during active and passive 45 degree knee flexion at 3, 6, 24, 48 hours after surgery.

    3, 6, 24, 48 hours after primary total knee arthroplasty.

Secondary Outcomes (4)

  • Ability of Early Ambulation After Surgery

    24, 48 hours after primary total knee arthroplasty.

  • Number of Participants Needing Additional Opioids

    3, 6, 24, 48 hours after primary total knee arthroplasty.

  • Rate of Patients Satisfaction

    3, 6, 24, 48 hours after primary total knee arthroplasty.

  • Number of Participants With Nausea or Vomiting

    3, 6, 24, 48 hours after primary total knee arthroplasty.

Study Arms (2)

Femoral Nerve Block

ACTIVE COMPARATOR

The femoral nerve block will be performed under the ultrasound guidance by a single injection of local anesthetic around all the femoral nerve branches inside the proximal part of the femoral triangle.

Procedure: Femoral Nerve Block

Femoral Triangle & Adductor Canal Blocks

ACTIVE COMPARATOR

These two blocks will be performed together. Firstly, the femoral triangle block will be performed under the ultrasound guidance by a single injection of local anesthetic at the level where the medial border of the sartorius muscle intersects the medial border of the adductor longus muscle. Local anesthetic will be injected laterally to the femoral artery. Secondly, the adductor canal block will be performed under the ultrasound guidance by a single injection of local anesthetic at the level where the femoral vessels (artery and vein) dive deeper from the sartorius muscle. Local anesthetic will be injected under the femoral artery.

Procedure: Femoral Triangle & Adductor Canal Blocks

Interventions

Procedure: Femoral Nerve Block The femoral nerve block will be performed as described in Arms section. Device: Ultrasound Linear ultrasound transducer probe (Flex Focus 400 exp, bk medical, Denmark) will be used to guide the needle placement. Device: Needle 20-gauge 50 mm Ultraplex needle (B. Braun Medical Inc., Melsungen, Germany) will be used to perform the femoral nerve block. Drug: Local anesthetic Bupivacaine 0.125% 20 mL will be used to perform the femoral nerve block.

Femoral Nerve Block

Procedure: Femoral Triangle \& Adductor Canal Blocks These two blocks will be performed as described in Arms section. Device: Ultrasound Linear ultrasound transducer probe (Flex Focus 400 exp, bk medical, Denmark) will be used to guide the needle placement. Device: Needle 20-gauge 100 mm Ultraplex needle (B. Braun Medical Inc., Melsungen, Germany) will be used to perform the femoral triangle block and adductor canal block. Drug: Local anesthetic Bupivacaine 0.125% 20 mL will be used to perform the femoral triangle block and adductor canal block (10 mL for each block).

Femoral Triangle & Adductor Canal Blocks

Eligibility Criteria

Age18 Years - 90 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Patients undergoing primary unilateral total knee arthroplasty under the spinal anesthesia.
  • Age 18 - 90 years.
  • Patients conformed to American Society of Anesthesiologists (ASA) physical status I-III in preoperative assessment.
  • Ability to follow the study protocol.

You may not qualify if:

  • Inability or refusal to follow the study protocol.
  • American Society of Anesthesiologists (ASA) physical status classification of IV or higher.
  • Coagulopathy.
  • Pre-existing lower extremity neuromuscular disorders.
  • Local infection over the injection site.
  • Allergy or contraindications to the drugs used in the study (local anesthetics, NSAIDs, opioids).
  • Chronic opioid use.
  • Other type of anesthesia.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Lithuanian University of Health Sciences Kauno Klinikos, Department of Anesthesiology

Kaunas, Lithuania

Location

Related Publications (6)

  • Bendtsen TF, Moriggl B, Chan V, Borglum J. The Optimal Analgesic Block for Total Knee Arthroplasty. Reg Anesth Pain Med. 2016 Nov/Dec;41(6):711-719. doi: 10.1097/AAP.0000000000000485.

    PMID: 27685346BACKGROUND
  • Kuang MJ, Ma JX, Fu L, He WW, Zhao J, Ma XL. Is Adductor Canal Block Better Than Femoral Nerve Block in Primary Total Knee Arthroplasty? A GRADE Analysis of the Evidence Through a Systematic Review and Meta-Analysis. J Arthroplasty. 2017 Oct;32(10):3238-3248.e3. doi: 10.1016/j.arth.2017.05.015. Epub 2017 May 17.

    PMID: 28606458BACKGROUND
  • Grevstad U, Mathiesen O, Lind T, Dahl JB. Effect of adductor canal block on pain in patients with severe pain after total knee arthroplasty: a randomized study with individual patient analysis. Br J Anaesth. 2014 May;112(5):912-9. doi: 10.1093/bja/aet441. Epub 2014 Jan 8.

    PMID: 24401802BACKGROUND
  • Seo SS, Kim OG, Seo JH, Kim DH, Kim YG, Park BY. Comparison of the Effect of Continuous Femoral Nerve Block and Adductor Canal Block after Primary Total Knee Arthroplasty. Clin Orthop Surg. 2017 Sep;9(3):303-309. doi: 10.4055/cios.2017.9.3.303. Epub 2017 Aug 4.

    PMID: 28861197BACKGROUND
  • Koh IJ, Choi YJ, Kim MS, Koh HJ, Kang MS, In Y. Femoral Nerve Block versus Adductor Canal Block for Analgesia after Total Knee Arthroplasty. Knee Surg Relat Res. 2017 Jun 1;29(2):87-95. doi: 10.5792/ksrr.16.039.

    PMID: 28545172BACKGROUND
  • Dong CC, Dong SL, He FC. Comparison of Adductor Canal Block and Femoral Nerve Block for Postoperative Pain in Total Knee Arthroplasty: A Systematic Review and Meta-analysis. Medicine (Baltimore). 2016 Mar;95(12):e2983. doi: 10.1097/MD.0000000000002983.

    PMID: 27015172BACKGROUND

MeSH Terms

Conditions

Agnosia

Condition Hierarchy (Ancestors)

Perceptual DisordersNeurobehavioral ManifestationsNeurologic ManifestationsNervous System DiseasesSigns and SymptomsPathological Conditions, Signs and Symptoms

Limitations and Caveats

There is no control group of patients who would not receive any peripheral nerve block. We were not able to measure the quadriceps muscle strenght with a dynamometer.

Results Point of Contact

Title
Principal Investigator Inna Jaremko
Organization
Lithuanian Univrsity of Health Sciences

Study Officials

  • Arunas Gelmanas, MDPhDAssProf

    Lithuanian University of Health Sciences

    STUDY CHAIR

Publication Agreements

PI is Sponsor Employee
Yes
Restrictive Agreement
No

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

August 15, 2018

First Posted

August 24, 2018

Study Start

August 28, 2018

Primary Completion

May 31, 2019

Study Completion

May 31, 2019

Last Updated

February 3, 2021

Results First Posted

January 13, 2021

Record last verified: 2021-01

Data Sharing

IPD Sharing
Will not share

Locations