NCT01196637

Thoracic Outlet Syndrome: Case Reports and Analysis With Ultrasound Imaging

Thoracic Outlet Syndrome: Case Reports and Analysis - Ultrasound Imaging and Pathomechanics of Brachial Plexus Compression

• Status: Completed
• Phase: —
• Study type: Observational
• Enrollment: 6 (actual)
• Sponsor: EMG Labs of Arizona Arthritis & Rheumatology Associates · Academic / Other
• Sex: All
• Age: 18 Years – 70 Years
• Healthy volunteers: Accepted

Summary

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

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

• Thoracic Outlet Syndrome

Timeline

• Start date: 2010-06-01
• Primary completion: 2010-09-01
• Completion: 2010-09-01
• First posted: 2010-09-08
• Last updated: 2010-09-09

Locations

1 site across 1 country: United States