NCT00221910

Brief Summary

Nerve "freezing" injections of the leg are very useful in providing anesthesia and pain relief for knee and ankle surgery. However, current nerve "freezing" techniques are "blind". As a result, they are not always successful and may cause complications, albeit infrequent. The objective of the current study is to determine any advantage in performing these "freezing" injections under direct ultrasound guidance, to "visualize" the nerves. We feel that by developing this technique, it will allow us to perform these procedures with greater success and fewer complications.

Trial Health

87
On Track

Trial Health Score

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

Timeline
Completed

Started Feb 2003

Typical duration 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

Study Start

First participant enrolled

February 1, 2003

Completed
2.1 years until next milestone

Study Completion

Last participant's last visit for all outcomes

March 1, 2005

Completed
7 months until next milestone

First Submitted

Initial submission to the registry

September 20, 2005

Completed
2 days until next milestone

First Posted

Study publicly available on registry

September 22, 2005

Completed
Last Updated

December 5, 2008

Status Verified

March 1, 2005

First QC Date

September 20, 2005

Last Update Submit

December 4, 2008

Conditions

Regional Anesthesia

Interventions

UltrasoundPROCEDURE

Eligibility Criteria

Age18 Years - 85 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • English-speaking
  • ASA physical status I-III
  • years of age, inclusive
  • kg, inclusive
  • cm of height or grater
  • Scheduled for elective foot or ankle surgery

You may not qualify if:

  • Contraindications to sciatic nerve block (e.g., allergy to local anesthetics, coagulopathy, malignancy or infection in the popliteal area)
  • Significant peripheral neuropathy or neurologic disorder affecting the lower extremity
  • Pregnancy
  • Contraindications to, allergies to, and/or past adverse reactions to local anesthetics
  • History of alcohol or drug dependency/abuse

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University Health Network

Toronto, Ontario, M5T2S8, Canada

Location

MeSH Terms

Interventions

High-Energy Shock Waves

Intervention Hierarchy (Ancestors)

Ultrasonic WavesSoundRadiation, NonionizingRadiationPhysical Phenomena

Study Officials

  • Anahi Perlas, MD

    University Health Network, Toronto

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Intervention Model
PARALLEL
Sponsor Type
OTHER

Study Record Dates

First Submitted

September 20, 2005

First Posted

September 22, 2005

Study Start

February 1, 2003

Study Completion

March 1, 2005

Last Updated

December 5, 2008

Record last verified: 2005-03

Locations

CA(1)