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Original ArticleOpen Access
Precision of a Needle Localization Technic in the Lumbosacral Multifidus Muscles for Segmental Specific Needle Electromyographic Study : A Cadaveric Study
Chinsethagij K 
,
Wongphaet P ,
Suarchawaratana S ,
Dangprasert T
,
Wongphaet P ,
Suarchawaratana S ,
Dangprasert T PARIT WONGPHAET, MD**,
TANYARAT DANGPRASERT, PhD*
The authors studied 14 cadavers to evaluate the claimed precision of needle placement into
segment specific multifidus fascicles when using the "paraspinal mapping" electromyographic technic.
Injection of acrylic dye was made according to landmarks proposed by Haig. The dissection showed
86.6 per cent of the injected dye in the correct fascicles. Only 1.4 per cent of the dye was lost. Spinous
process level misidentification was the cause of the other 11.8 per cent incorrect injection. The authors
expected that in living humans, in which the spinous processes are move identificable than embalmed
cadavers, the precisions may be as high as 98.5 per cent. This remains to be studied in a further
"in
vivo"
study
Key word : EMG, Needle, Electromyography, Paraspinal, Multifidus
TANYARAT DANGPRASERT, PhD*
The authors studied 14 cadavers to evaluate the claimed precision of needle placement into
segment specific multifidus fascicles when using the "paraspinal mapping" electromyographic technic.
Injection of acrylic dye was made according to landmarks proposed by Haig. The dissection showed
86.6 per cent of the injected dye in the correct fascicles. Only 1.4 per cent of the dye was lost. Spinous
process level misidentification was the cause of the other 11.8 per cent incorrect injection. The authors
expected that in living humans, in which the spinous processes are move identificable than embalmed
cadavers, the precisions may be as high as 98.5 per cent. This remains to be studied in a further
"in
vivo"
study
Key word : EMG, Needle, Electromyography, Paraspinal, Multifidus
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