Cervical foraminotomy is used to treat recalcitrant foraminal stenosis in the cervical region. This foraminotomy can be performed under endoscopy. The irrigation pressure used to allow adequate visualization of the anatomical structures is usually between 40 and 50 mmHg. This pressure has no adverse effect intraoperatively on motor evoked potentials but its effect on somesthetic evoked potentials has not yet been studied. The purpose of this study is to validate the absence of disruption of somatosensory evoked potentials by endoscopic cervical foraminotomy
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Influence of the endoscopic irrigation pressure on somatosensory evoked potentials.
Timeframe: Through surgery completion, from electrodes placement until their removal. An average of two hours.
Influence of the endoscopic irrigation pressure on motor evoked potentials.
Timeframe: Through surgery completion, from electrodes placement until their removal. An average of two hours.