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The Musculocutaneous Nerve in a High Resolution MRI

NCT02305875 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 54

Last updated 2015-05-18

No results posted yet for this study

Summary

The investigators have made a favourable experience with the in 2006 published transarterial triple injection method \[4\]. This classic method combines the block effect of an axillary catheter injection (median nerve position) with a double transarterial injection at terminal nerve level in the axilla.

The investigators experience after a recent published MRI study \[3\], confirms that a proximal axillary local anesthetic injection via an axillary catheter, guided by nerve stimulator, is beneficial for the block effect. The MRI study was conducted using nerve stimulation and a transarterial technique. The proximal injection with an effect at cord level, combined with axillary injections at terminal nerve level, produce an effective block distal to the elbow.

The proximal injection has obviously an effect to the lateral cord and the musculocutaneous nerve (mcn) \[3\]. Recent studies have advocated that a double axillary injection method is sufficient for the axillary block \[5, 6\]. Their block techniques included a selective block of the mcn at terminal nerve level. The investigators MRI study \[3\] demonstrated a successful block effect (analgesia or anaesthesia) of the mcn nerve in all patients (15 of 15 patients) in the triple injection group without a selective block of this nerve. In the 1- deposit (catheter injection) and 2-deposit (transarterial injections) group, 11 of 15 patients (73%) had the mcn successful blocked.

The objective in this study (Article 4) is to examine the mean position of the mcn nerve and its relationship to the coracobrachial muscle. Can MRI indicate / predict that a proximal directed axillary catheter in median nerve position is beneficial in order to provide a successful mcn blockade? Is a selective injection to the mcn at terminal nerve level superfluous when a catheter is used?

Conditions

  • Brachial Plexus Block

Interventions

OTHER

MCN scoring

Mcn's distance from top of the humeral head. Mcn's distance to the catheters insertion point. Mcn's distance and position in relationship to the axillary artery.

Sponsors & Collaborators

  • Diakonhjemmet Hospital

    lead OTHER

Principal Investigators

  • Per Kr Hol, PhD · University of Oslo, The Intervention Centre

Study Design

Allocation
NA
Purpose
BASIC_SCIENCE
Masking
NONE
Model
SINGLE_GROUP

Eligibility

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

Timeline & Regulatory

Start
2014-10-31
Primary Completion
2015-04-30
Completion
2015-05-31

Countries

  • Norway

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 NCT02305875 on ClinicalTrials.gov