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Adductor Canal Block Ultrasound Anatomy in Volunteers

NCT03008564 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 60

Last updated 2017-12-07

No results posted yet for this study

Summary

There has been dispute about the location at which the adductor canal block should be performed (3-6). Two Common approaches have been used for ultrasound guided adductor canal blocks with the 'point of entry' being:

1. Point A: midway point between the ASIS and base of patella
2. Point B: Point which is 2-3 cm proximal to the site where the femoral artery becomes the popliteal artery as it traverses away from the sartorius muscle towards the femur at the adductor hiatus (2)

We want to determine ultrasound anatomy in healthy volunteers by:

1. Measuring the distance between Point A and Point B
2. Studying the ultrasound anatomy at Point A and B - Determine their location with respect to the adductor canal and femoral triangle.

This will allow us to determine which is the best site for performing an adductor canal block

Conditions

  • Adductor Canal Block
  • Postop Analgesia for Knee

Interventions

OTHER

Ultrasound scanning of the lower limb in volunteers

Several reference points will be marked by anatomical landmarks and/or ultrasound: the anterior superior iliac spine; base of patella; apex of the femoral triangle A measuring tape will be used to measure the anterior superior iliac spine (landmark); the base of the patella (landmark); apex of femoral triangle (ultrasound); and distal most portion of adductor canal (Point B described earlier; ultrasound). We will then measure the ASIS to: 1) base of patella; 2) apex of femoral triangle; and 3) Point B. We will repeat the same procedure on the opposite leg. Once complete, the volunteer will be allowed to dress and leave. The procedure should take approximately 10-20 minutes for each volunteer. The following things will be recorded for each subject: * Age * Gender * Weight * Height * BMI * Distance of ASIS to base of patella * Distance of Point A to base of patella * Distance of Point B to base of patella * Distance of apex of femoral triangle to base of patella

Sponsors & Collaborators

  • University of Iowa

    lead OTHER

Principal Investigators

  • Amanda Yap, MBBS · 319-356-1616

Eligibility

Min Age
18 Years
Max Age
75 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2017-05-01
Primary Completion
2017-06-16
Completion
2017-06-16

Countries

  • United States

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 NCT03008564 on ClinicalTrials.gov