Motor recovery in a patient with an infarct in the medullary pyramid via the corticospinal tract passing through the small spared area within the infarcted medullary pyramid  

作　　者：Hyeok Gyu Kwon Sung Ho Jang 

机构地区：[1]Department of Physical Therapy,Graduate School of Rehabilitation Science,Daegu University [2]Department of Physical Medicine and Rehabilitation,College of Medicine,Yeungnam University

出　　处：《Neural Regeneration Research》2011年第15期1185-1188,共4页中国神经再生研究（英文版）

基　　金：a grant from Daegu Metropolitan City R&D Project

摘　　要：The present study reported a 58-year-old male patient who exhibited complete paralysis of the right extremities at stroke onset.Brain MR images showed an infarct in the left medullary pyramid and a small spared area on the medial side of the infarct.He gained the ability to extend the affected fingers against gravity and to dorsiflex the affected ankle without gravity at 3 months after stroke onset.Diffusion tensor imaging results showed that at 6 months after stroke onset,the corticospinal tract of the affected（left） hemisphere descended through the small spared area of the infarcted medullary pyramid.No motor-evoked potential was elicited from the affected（left） hemisphere at 2 weeks after stroke onset; however,motor-evoked potential was elicited at 6 months as shown by transcranial magnetic stimulation results.The motor function of the affected side of this patient appears to have been recovered via the corticospinal tract that passed through the small spared area within the infarcted medullary pyramid.The present study reported a 58-year-old male patient who exhibited complete paralysis of the right extremities at stroke onset.Brain MR images showed an infarct in the left medullary pyramid and a small spared area on the medial side of the infarct.He gained the ability to extend the affected fingers against gravity and to dorsiflex the affected ankle without gravity at 3 months after stroke onset.Diffusion tensor imaging results showed that at 6 months after stroke onset,the corticospinal tract of the affected（left） hemisphere descended through the small spared area of the infarcted medullary pyramid.No motor-evoked potential was elicited from the affected（left） hemisphere at 2 weeks after stroke onset; however,motor-evoked potential was elicited at 6 months as shown by transcranial magnetic stimulation results.The motor function of the affected side of this patient appears to have been recovered via the corticospinal tract that passed through the small spared area within the infarcted medullary pyramid.

关 键 词：diffusion tensor tractography diffusion tensor imaging corticospinal tract stroke MEDULLA 

分 类 号：R743.3[医药卫生—神经病学与精神病学]