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What Neural Elements of The Brachial Plexus Make Up The “Stoplight Sign” at The Interscalene Groove ? : A Volunteer Study

What Neural Elements of The Brachial Plexus Make Up The “Stoplight Sign” at The Interscalene Groove ? : A Volunteer Study

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
TCTR
Registry ID
TCTR20190720003
Enrollment
50
Registered
2019-07-20
Start date
2019-08-19
Completion date
Unknown
Last updated
2026-08-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

The neural element that make up the “stoplight sign” at the interscalene groove Any variation in the anatomy of the C5&#44

Interventions

50 healthy volunteers will be recruited for this prospective and observational study.
Volunteer

Sponsors

Ramathibodi Hospital
Lead Sponsor

Eligibility

Sex/Gender
All
Age
20 Years to 45 Years

Inclusion criteria

Inclusion criteria: healthy young volunteers both male and female, who are between 20-45 years of age, of American Society of Anesthesiologist physical status 1 to 2.

Exclusion criteria

Exclusion criteria: Subjects with a body mass index > 35 kg.m-2 Clinically obvious C-spine deformities or limited range of motion of the neck. History of surgery at the neck or supraclavicular area.

Design outcomes

Primary

MeasureTime frame
Determine the neural element that make up the “stoplight sign” at the interscalene groove after ultrasound examination systematic ultrasound examination

Secondary

MeasureTime frame
The cross sectional area and diameter of the C5, C6, C7 nerve root after ultrasound examination systematic ultrasound examination ,The presence of intra-root splitting after ultrasound examination systematic ultrasound examination ,The course of C5, C6, C7 nerve root after ultrasound examination systematic ultrasound examination ,Any variation in the anatomy of the C5, C6, C7 nerve root after ultrasound examination systematic ultrasound examination

Countries

Thailand

Contacts

Public ContactPornpatra Areeruk

Ramathibodi Hospital

pornpatra@yahoo.com0944495966

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026