Cervicalgia Clinical Trial
Official title:
Could Cervical Postural Changes Affect the Long Thoracic Nerve Electromyographic Findings?
This study investigates one of the mechanism factors of neck pain. Cervical lordotic angle alterations affect the tension of serratus anterior muscle. Expected result that the long thoracic nerve can be affected in this situation, and could be observed the functional changes of the nerve with serratus anterior electromyographic findings.
Different methods exist in order to evaluate muscle function. For the neck pain, the most
commonly used method by researchers and clinicians are spot radiography and surface
electromyography (sEMG). Radiographs can be used for the kyphotic angle or cervical lordotic
angle measurements. Parameters that can be studied by EMG are amplitude, timing, conduction
velocity, fatigability and characteristic frequencies/patterns.
The long thoracic nerve innervates the serratus anterior muscle. This nerve arises from the
anterior rami of three spinal nerve roots: the fifth, sixth, and seventh cervical nerves
(C5-C7) The nerve descends through the cervicoaxillary canal behind (posterior to) the
brachial plexus and the axillary artery and vein, resting on the outer surface of the
serratus anterior. The Serratus anterior electromyography, the needle can be inserted into
the muscle superficially to the fourth to sixth rib in the medial or posterior axillary
line. The usual nerve latency time is between 2.6-4 ms.
In this study, the results of serratus anterior muscle EMG activity and postural cervical
angle alterations (lateral radiography) in patients with chronic mechanical neck pain will
be compared with healthy volunteers without neck pain.
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Allocation: Non-Randomized, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Diagnostic
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