Thoracic Outlet Syndrome: Case Reports and Analysis With Ultrasound Imaging

Completed

Conditions studied: Thoracic Outlet Syndrome

In brief

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.

Key facts

Study ID

NCT01196637

Run by

EMG Labs of Arizona Arthritis & Rheumatology Associates

People needed

6

Starts

2010-06-01

Expected to finish

2010-09-01

Last updated by the study team

2010-09-09

Who can join

Age: 18 and older, up to 70. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• 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

You may not qualify if…

• 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

Where it is running

• EMG Labs of AARA — Paradise Valley, Arizona, United States

Full record on ClinicalTrials.gov

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