Identification of injury type using somatosensory and motor evoked potentials in a rat spinal cord injury model  

作　　者：Rong Li Han-Lei Li Hong-Yan Cui Yong-Can Huang Yong Hu 

机构地区：[1]Department of Orthopedics and Traumatology,The University of Hong Kong-Shenzhen Hospital,Shenzhen,Guangdong Provinve,China [2]Department of Neurosurgery,Neuroscience Center,Integrated Hospital of Traditional Chinese Medicine,Southern Medical University,Guangzhou,Guangdong Provinve,China [3]Institute of Biomedical Engineering,Chinese Academy of Medical Sciences and Peking Union Medical College,Tianjin,China [4]Shenzhen Engineering Laboratory of Orthopedic Regenerative Technologies,Department of Spine Surgery,Peking University Shenzhen Hospital,Shenzhen,Guangdong Provinve,China [5]Department of Orthopedics and Traumatology,The University of Hong Kong,Pokfulam,Hong Kong Special Administrative Region,China

出　　处：《Neural Regeneration Research》2023年第2期422-427,共6页中国神经再生研究（英文版）

基　　金：supported by the National Natural Science Foundation of China,No.81871768(to YH);Natural Science Foundation of Tianjin,China,No.18JCYBJC29600(to HYC);High Level-Hospital Program,Health Commission of Guangdong Province,China,No.HKUSZH201902011(to YH)。

摘　　要：The spinal cord is at risk of injury during spinal surgery.If intraoperative spinal co rd injury is identified early,irreve rsible impairment or loss of neurological function can be prevented.Different types of spinal cord injury result in damage to diffe rent spinal cord regions,which may cause diffe rent somatosensory and motor evoked potential signal res ponses.In this study,we examined electrophysiological and histopathological changes between contusion,distra ction,and dislocation spinal cord injuries in a rat model.We found that contusion led to the most severe dorsal white matter injury and caused considerable attenuation of both somatosensory and motor evoked potentials.Dislocation resulted in loss of myelinated axons in the lateral region of the injured spinal cord along the rostrocaudal axis.The amplitude of attenuation in motor evoked potential responses caused by dislocation was greater than that caused by contusion.After distraction injury,extracellular spaces were slightly but not significantly enlarged;somatosensory evoked potential res ponses slightly decreased and motor evoked potential responses were lost.Correlation analysis showed that histological and electrophysiological findings we re significantly correlated and related to injury type.Intraope rative monitoring of both somatosensory and motor evoked potentials has the potential to identify iatrogenic spinal cord injury type during surgery.

关 键 词：contusion injury dislocation injury distraction injury electropnysiology heterogeneity HISTOPATHOLOGY injury mechanism motor evoked potential somatosensory evoked potential spinal cord injury 

分 类 号：R651.2[医药卫生—外科学]