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Thoracic Outlet Syndrome: Case Reports and Analysis With Ultrasound Imaging

NCT ID: NCT01196637

Last Updated: 2010-09-09

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

6 participants

Study Classification

OBSERVATIONAL

Study Start Date

2010-06-30

Study Completion Date

2010-09-30

Brief Summary

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Thoracic outlet syndrome is caused by compression of the brachial plexus, in most cases under the pectoralis minor muscle in the infraclavicular region of the shoulder. The hypothesis is that ultrasound imaging can be used to visualize brachial plexus compression and distortion of the pectoralis muscle during arm activity, such as abduction, and that normal subjects will not demonstrate any plexus compression or muscle distortion.

Detailed Description

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Four patients with thoracic outlet syndrome (TOS) underwent clinical exam and nerve testing to prove that they had TOS and no other nerve abnormality. They subsequently had ultrasound imaging of the shoulder (infraclavicular region) at rest and during arm abduction stress testing. Two control subjects had similar clinical exams and nerve testing to prove they did not have TOS, and then underwent similar ultrasound stress testing. The TOS patients demonstrated brachial plexus compression and pectoralis minor muscle distortion during the stress tests, and the normal subjects showed no plexus compression or muscle distortion.

Conditions

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Thoracic Outlet Syndrome

Study Design

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Observational Model Type

CASE_CONTROL

Study Time Perspective

PROSPECTIVE

Study Groups

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Thoracic outlet syndrome

These patients have documented thoracic outlet syndrome

No interventions assigned to this group

Normal Subjects

These patients have no thoracic outlet syndrome

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

Thoracic outlet patients must have:

* symptoms consistent with thoracic outlet syndrome, and
* no electrical testing abnormality, and
* positive arm abduction stress tests.

Normal subjects must have:

* no upper limb symptoms, or
* normal nerve testing, and
* negative arm abduction stress test

Exclusion Criteria

Thoracic outlet patients excluded if they have:

* nerve test abnormalities, or
* negative arm abduction stress test

Normals excluded if they have:

* abnormalities on nerve testing, or
* positive arm abduction stress tests
Minimum Eligible Age

18 Years

Maximum Eligible Age

70 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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EMG Labs of Arizona Arthritis & Rheumatology Associates

OTHER

Sponsor Role lead

Responsible Party

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EMG Labs of AARA

Principal Investigators

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Benjamin M Sucher, D.O.

Role: PRINCIPAL_INVESTIGATOR

EMG Labs of AARA

Locations

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EMG Labs of AARA

Paradise Valley, Arizona, United States

Site Status

Countries

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United States

Other Identifiers

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TOS-US BP JAOA

Identifier Type: -

Identifier Source: org_study_id