Sensitivity and efficacy of intraoperative electromyography monitoring in combination with 3D imaging modality during complex lumbosacral procedures / 中国组织工程研究
Chinese Journal of Tissue Engineering Research
;
(53): 7613-7618, 2009.
Article
in Chinese
| WPRIM
| ID: wpr-405781
ABSTRACT
MAIN OUTCOME MEASURES:
Free running EMG and stimulus triggered EMG, including time, frequency, amplitude, muscle group were observed and recorded simultaneously. Never root functional injury and restoration after surgery were detected.RESULTS:
378 pedicle screws in 74 patients were monitored intraoperatively, and only 3 pedicle screw malposition (2 of L_4, 1 of L_5) was detected and then replaced with the help of C-arm fluoroscopic examination. Myoelectricity appeared when the current intensity was less than 10 mA. The correct rate of implantation was 99.2%. Nerve root impingement was found in two cases during laminectomy for L_5 and S_1 decompression and never root solution, which alerted the surgical team of critical neural structures. Nerve symptoms of the lower limb were aggravated after surgery and restored following 2-4 weeks of conventional treatment. The error injury rate of nerve root was 2.7%. In all reported cases, no irreversible neurological deficit was observed 2-4 weeks after operation.CONCLUSION:
Intraoperative EMG monitoring can find improperly placed screws and detect impending nerve root injury promptly. Combined EMG and 3-D imaging modality monitoring is a reliable and practicable method that can be used to protect neural structures during complex lumbosacral surgery.
Full text:
Available
Index:
WPRIM (Western Pacific)
Type of study:
Diagnostic study
Language:
Chinese
Journal:
Chinese Journal of Tissue Engineering Research
Year:
2009
Type:
Article
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