Cadaver evaluation of EMG needle insertion techniques used to target muscles of the thorax

Measure the accuracy of needle insertion in thoracic muscles of human cadavers. Evaluate the effectiveness of known EMG techniques for sampling thoracic innervated muscles. The evaluation of thoracic radiculopathies requires accurate electrodiagnostic techniques for evaluating the thoracic myotomes....

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Bibliographic Details
Published in:Spine (Philadelphia, Pa. 1976) Pa. 1976), 2006-04, Vol.31 (9), p.E241-E243
Main Authors: Chiodo, Anthony, Goodmurphy, Craig, Haig, Andrew
Format: Article
Language:English
Subjects:
Adult
Aged
Aged, 80 and over
Electrodes, Implanted - standards
Electromyography - instrumentation
Electromyography - methods
Female
Humans
Intercostal Muscles - physiology
Male
Middle Aged
Muscle, Skeletal - innervation
Muscle, Skeletal - physiology
Needles
Polyradiculopathy - diagnosis
Rectus Abdominis - physiology
Reproducibility of Results
Single-Blind Method
Thorax - physiology
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Summary:Measure the accuracy of needle insertion in thoracic muscles of human cadavers. Evaluate the effectiveness of known EMG techniques for sampling thoracic innervated muscles. The evaluation of thoracic radiculopathies requires accurate electrodiagnostic techniques for evaluating the thoracic myotomes. An American Board of Electrodiagnostic Medicine certified physician placed needles into pertinent muscles of the thorax and an anatomist serving as a blinded dissector recorded the path and accuracy of needle. Needle examination of thoracic muscles was as accurate as limb needle examination. No notable risks are noted in multifidus sampling. However, in the cadaver, some risks were noted in association with placements in the intercostal muscles. The target muscle was reliably sampled, but the rib or vertebral level was difficult to landmark in the cadaver. Needle examination of the thoracic multifidus and intercostals is reliable, although further confirmation is needed to accurately verify the appropriate vertebral or rib level being sampled.
ISSN:0362-2436
1528-1159
DOI:10.1097/01.brs.0000214941.46628.1c