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The Effect of Leg Position on the Sciatic Nerve on Sonogram

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ClinicalTrials.gov Identifier: NCT03678961
Recruitment Status : Recruiting
First Posted : September 20, 2018
Last Update Posted : September 20, 2018
Sponsor:
Information provided by (Responsible Party):
Hajung Kim, Asan Medical Center

Brief Summary:
Little is known about which posture of lower extremity makes it easier to access to the sciatic nerve. In this study, the investigators aimed to identify the most appropriate positioning of the lower extremity during anterior-approach ultrasound-guided sciatic nerve block.

Condition or disease Intervention/treatment
Sciatic Nerve Block Behavioral: external rotation of leg Behavioral: hip flexion and knee flexion

Study Type : Observational
Estimated Enrollment : 40 participants
Observational Model: Case-Crossover
Time Perspective: Prospective
Official Title: Influence of Lower Extremity Positioning During Anterior-approach Ultrasound-guided Sciatic Nerve Block: Depth and Visibility
Actual Study Start Date : August 30, 2018
Estimated Primary Completion Date : December 31, 2018
Estimated Study Completion Date : December 31, 2018

Group/Cohort Intervention/treatment
Group N
Neutral position
Group E
External rotation of leg by 45 degrees
Behavioral: external rotation of leg
external rotation of leg by 45 degrees

Group EF45
External rotation of leg by 45 degrees, hip flexion by 45 degrees, and knee flexion by 45 degrees
Behavioral: external rotation of leg
external rotation of leg by 45 degrees

Behavioral: hip flexion and knee flexion
hip flexion by 15/45 degrees and knee flexion by 15/45 degrees

Group EF15
External rotation of leg by 45 degrees, hip flexion by 15 degrees, and knee flexion by 15 degrees
Behavioral: external rotation of leg
external rotation of leg by 45 degrees

Behavioral: hip flexion and knee flexion
hip flexion by 15/45 degrees and knee flexion by 15/45 degrees




Primary Outcome Measures :
  1. Depth of sciatic nerve [ Time Frame: during 10 minutes of anesthesia induction ]
    Distance from skin to sciatic nerve at each position


Secondary Outcome Measures :
  1. Visibility of sciatic nerve [ Time Frame: during 10 minutes of anesthesia induction ]
    Visibility of sciatic nerve at each position



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Ages Eligible for Study:   18 Years to 80 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Probability Sample
Study Population
Patients undergoing knee surgery requiring peripheral nerve block
Criteria

Inclusion Criteria:

  • ASA PS 1-3
  • patients undergoing knee surgery requiring peripheral nerve block

Exclusion Criteria:

  • patients who refuse to participate in the study
  • BMI > 40 kg/m2
  • patients who have congenital abnormality on leg
  • patients who have surgery or trauma on hip/knee
  • patients who cannot move freely due to the contracture
  • patients who are judged ineligible by the medical staff to participate in the study for other reasons

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03678961


Contacts
Contact: Hajung Kim, M.D., Ph.D. 82-2-3010-0338 alexakim06@gmail.com

Locations
Korea, Republic of
Asan Medical Center Recruiting
Seoul, Korea, Republic of, 05505
Contact: Won Uk Koh, M.D., Ph.D.         
Sponsors and Collaborators
Asan Medical Center
Investigators
Principal Investigator: Won Uk Koh, M.D., Ph.D. University of Ulsan, College of Medicine, Asan Medical Center

Responsible Party: Hajung Kim, Clinical Instructor, Asan Medical Center
ClinicalTrials.gov Identifier: NCT03678961     History of Changes
Other Study ID Numbers: 2018-0970
First Posted: September 20, 2018    Key Record Dates
Last Update Posted: September 20, 2018
Last Verified: September 2018

Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No