Rating of intra-operative neuro-monitoring results in operative correction of the spinal deformities

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Abstract

Purpose of the work was filing the electrophysiological phenomena observed in the process of intra-operative neuromonitoring followed by development of the results’ scale of intra-operative neuro-physiological testing of the pyramidal tract. Materials and мethods. The selection for evaluation included data of 147 protocols of intra-operative neuromonitoring in 135 patients (53 males, 82 females), aged from 1 y. 5 m. to 52 years (14,1±0,7 years) with spinal deformities of different etiology who underwent instrumentation spinal correction followed by fixation of thoracic / thoracolumbar spine segments using various variants of internal systems of trans-pedicular fixation. Intra-operative neuro-monitoring was performed using system «ISIS IOM» (Inomed Medizintechnik GmbH, Germany). The changes of motor evoked potentials were evaluated according to this scale. Results. Five types of pyramidal system reaction to operative invasion were revealed. According to neurophysiological criteria three grades of the risk of neurological disorders development during operative spinal deformity correction and, correspondingly, three levels of anxiety for the surgeon were defined. Conclusion. Intra-operative neurophysiological monitoring is the effective highly technological instrument to prevent neurological disorders in the spinal deformity. Offered rating scale of the risk of neurological complications gives the possibility to highlight three levels of anxiety during operative invasion.

About the authors

A. A. Skripnikov

Ilizarov Russian Scientific Center «Restorative Traumatology and Orthopedics»

Author for correspondence.
Email: skripnikov2007@mail.ru
researcher of the laboratory of axial skeleton pathology and neurosurgery Russian Federation

M. S. Saiphutdinov

Ilizarov Russian Scientific Center «Restorative Traumatology and Orthopedics»

Email: fake@neicon.ru
leading researcher of laboratory of axial skeleton pathology and neurosurgery Russian Federation

S. O. Ryabykh

Ilizarov Russian Scientific Center «Restorative Traumatology and Orthopedics»

Email: fake@neicon.ru
head of laboratory of axial skeleton pathology and neurosurgery Russian Federation

G. A. Krivoruchko

Ilizarov Russian Scientific Center «Restorative Traumatology and Orthopedics»

Email: fake@neicon.ru
senior researcher of laboratory of axial skeleton pathology and neurosurgery, Russian Federation

A. P. Shein

Ilizarov Russian Scientific Center «Restorative Traumatology and Orthopedics»

Email: fake@neicon.ru
professor leading researcher of laboratory of axial skeleton pathology and neurosurgery Russian Federation

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