Adductor Canal Block Ultrasound Anatomy in Volunteers

NCT03008564 | Completed

• 1 other identifier: 201612345
• Study Type: observational
• Target: 60
• Locations: 1 country
• Sites: 1

Brief 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. 1.Point A: midway point between the ASIS and base of patella
2. 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)
3. 3.Measuring the distance between Point A and Point B
4. 4.Studying the ultrasound anatomy at Point A and B - Determine their location with respect to the adductor canal and femoral triangle.

Conditions

Adductor Canal Block; Postop Analgesia for Knee

Outcome Measures

Primary Outcomes (1)

• Measurement 1

  The distance in cm between Point A and Point B

  One time assessment done during Ultrasound scanning of the lower extremity

Secondary Outcomes (3)

• Measurement 2

  One time assessment done during Ultrasound scanning of the lower extremity

• Measurement 3

  One time assessment done during Ultrasound scanning of the lower extremity

• Measurement 4

  One time assessment done during Ultrasound scanning of the lower extremity

Interventions

Ultrasound scanning of the lower limb in volunteers OTHER

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

Eligibility Criteria

• Age: 18 Years - 75 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

We aim to recruit volunteers who principally are healthcare employees at UIHC who mainly work in the Main Operating Rooms and Ambulatory Surgical Center Operating Rooms, mainly due to ease of access to ultrasonographic equipment. The subjects include anesthesiologists, certified registered nurse anesthetists, residents, interns, nurses, volunteers, technicians, administrative staff and other members of staff working in these areas.

You may qualify if:

• age 18-75 years, body mass index 18-35 kg/m2

You may not qualify if:

• no previous surgery or complaints from the lower extremity region

Sponsors & Collaborators

• University of Iowa: lead

Study Sites (1)

University Of Iowa Hospitals and Clinics

Iowa City, Iowa, 52246, United States

Location

Related Publications (6)

• Bendtsen TF, Moriggl B, Chan V, Pedersen EM, Borglum J. Defining adductor canal block. Reg Anesth Pain Med. 2014 May-Jun;39(3):253-4. doi: 10.1097/AAP.0000000000000052. No abstract available.

  PMID: 24747312 BACKGROUND

• Tubbs RS, Loukas M, Shoja MM, Apaydin N, Oakes WJ, Salter EG. Anatomy and potential clinical significance of the vastoadductor membrane. Surg Radiol Anat. 2007 Oct;29(7):569-73. doi: 10.1007/s00276-007-0230-4. Epub 2007 Jul 7.

  PMID: 17618402 BACKGROUND

• Jaeger P, Zaric D, Fomsgaard JS, Hilsted KL, Bjerregaard J, Gyrn J, Mathiesen O, Larsen TK, Dahl JB. Adductor canal block versus femoral nerve block for analgesia after total knee arthroplasty: a randomized, double-blind study. Reg Anesth Pain Med. 2013 Nov-Dec;38(6):526-32. doi: 10.1097/AAP.0000000000000015.

  PMID: 24121608 BACKGROUND

• Bendtsen TF, Moriggl B, Chan V, Pedersen EM, Borglum J. Redefining the adductor canal block. Reg Anesth Pain Med. 2014 Sep-Oct;39(5):442-3. doi: 10.1097/AAP.0000000000000119. No abstract available.

  PMID: 25140514 BACKGROUND

• Bendtsen TF, Moriggl B, Chan V, Borglum J. Basic Topography of the Saphenous Nerve in the Femoral Triangle and the Adductor Canal. Reg Anesth Pain Med. 2015 Jul-Aug;40(4):391-2. doi: 10.1097/AAP.0000000000000261. No abstract available.

  PMID: 26079358 BACKGROUND

• Manickam B, Perlas A, Duggan E, Brull R, Chan VW, Ramlogan R. Feasibility and efficacy of ultrasound-guided block of the saphenous nerve in the adductor canal. Reg Anesth Pain Med. 2009 Nov-Dec;34(6):578-80. doi: 10.1097/aap.0b013e3181bfbf84.

  PMID: 19916251 BACKGROUND

Study Officials

• Amanda Yap, MBBS

  319-356-1616

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: observational
• Observational Model: CASE ONLY
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Clinical Assistant Professor

Study Record Dates

• First Submitted: December 28, 2016
• First Posted: January 2, 2017
• Study Start: May 1, 2017
• Primary Completion: June 16, 2017
• Study Completion: June 16, 2017
• Last Updated: December 7, 2017

Record last verified: 2017-11

Data Sharing

• IPD Sharing: Will not share

Locations

US (1)