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Diagnosis Meningioma at the level of 8 thoracic vertebra body with spinal cord compression Surgical operation Vertebral hemilaminectomy GOP 7-9 and macroscopic complete tumor extirpation (Simpson II) using constant electrophysiological monitoring IOM installation Somatosensory evoked potentials Median nerve left/rightTibial nerve left/right Motor evoked potentials Muscle abductor of the V finger of the footAnterior tibial muscle Graphs of the motor evoked potentials measurement var htmlDiv = document.getElementById("rs-plugin-settings-inline-css"); var htmlDivCss=""; if(htmlDiv) { htmlDiv.innerHTML = htmlDiv.innerHTML + htmlDivCss; }else{ var htmlDiv = document.createElement("div"); htmlDiv.innerHTML = "" + htmlDivCss + ""; document.getElementsByTagName("head")[0].appendChild(htmlDiv.childNodes[0]); } var htmlDiv = document.getElementById("rs-plugin-settings-inline-css"); var htmlDivCss=""; if(htmlDiv) { htmlDiv.innerHTML = htmlDiv.innerHTML

Diagnosis Radicular schwannoma L5 (8 x 40mm) with compression of cauda equina Surgical operation Dorsal access to the lumbar vertebral body 4-5, hemilaminectomy POP4 and POP5 on the left side and microscopic complete tumor resection up to the place of application to the L5 radices using constant intraoperative monitoring and imaging IOM installation Somatosensory evoked potentials Tibial nerve left/right Motor evoked potentials Anterior tibial muscle – deep peroneal nerve, common peroneal nerve, sciatic nerve, lumbar plexus L4, L5Biceps femoris – long head: tibial nerve, short head:

Diagnosis Intervertebral disc hernia C5/C6 with compressive myelopathy. Surgical operation Decompression C5/6, prosthesis C5/6 IOM installation Somatosensory evoked potentials Median nerve left/rightTibial nerve left/right Motor evoked potentials Deltoid muscle – axillary nerve, the bundle of the brachial plexus, C5, C6Biceps of the shoulder – musculocutaneous nerve, the lateral bundle of the brachial plexus C5, C6Abductor of the V finger of the foot – ulnar nerve, the deep branch, the brachial plexus, C8, T1 Initial data and final measurements of motor evoked potentials and somatosensory evoked potentials

Diagnosis: Cervical canal stenosis C5/C6 and C6/7 with compressive myelopathy. Surgical operation: Decompression/spinal fusion (previous interbody fusion of the cervical part of the spine (ACIF) C5/6 and C6/C7 IONM installation: Somatosensory evoked potentials Median nerve left/right Tibial nerve left/right Motor evoked potentials DeltoidBicepsTricepsAbductor of the V finger of the foot Motor evoked potentials-improvement Before decompression (biceps, abductor of the I finger of the foot) After decompression (biceps, abductor of the I finger of the foot)