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Does Interneural Local Anesthetic Spread at the Site of Sciatic Nerve Bifurcation Shorten Block Onset Time?

NCT01568476 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 88

Last updated 2017-12-05

No results posted yet for this study

Summary

Following foot and ankle surgery, ultrasound-guided sciatic nerve block (SNB) at the popliteal fossa decreases post-operative pain and opioid consumption. At the popliteal fossa, the sciatic nerve bifurcates to form the Common Peroneal Nerve (CPN) and Tibial Nerve (TN). Studies have shown that when both branches are blocked separately distal to the bifurcation site, block onset time is reduced by 30%. Through clinical observation, the investigators found that onset time is further shortened when ultrasound-guided SNB is performed at the site of bifurcation. This is because the local anesthetic spreads interneurally. The purpose of this study is to compare the block onset time of an ultrasound-guided sciatic nerve block at the site of nerve bifurcation with the blockade of each terminal nerve separately (TN and CPN) distal to sciatic nerve bifurcation.

Conditions

  • Post Operative Analgesia
  • Regional Anesthesia
  • Sciatic Nerve Block

Interventions

PROCEDURE

Distal

Blockade of both terminal branches of Sciatic nerve separately, distal to bifurcation

PROCEDURE

Interneural

Sciatic nerve blockade at the site of bifurcation

Sponsors & Collaborators

  • University Health Network, Toronto

    lead OTHER

Principal Investigators

  • Anahi Perlas, MD, FRCPC · University of Toronto

Study Design

Allocation
RANDOMIZED
Purpose
OTHER
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
85 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2011-07-31
Primary Completion
2013-06-30
Completion
2013-06-30

Countries

  • Canada

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01568476 on ClinicalTrials.gov