RÉSUMÉ
@#To summarize the clinical and imaging features of ipsilateral limb weakness caused by cerebral infarction，and to explore the possible physiological mechanism of the disease. Methods The clinical data of patients with ipside-limb weakness caused by acute cerebral infarction hospitalized in our department from January 1，2016 to December 30，2016 were collected，and the neurological symptoms and signs，magnetic resonance imaging （MRI） and other examination results of the patients were analyzed descriptively. Results 8 cases of ipsilateral hemiparesis （0.18%） were found in 4495 patients with acute cerebral infarction，all 8 patients were lacunar cerebral infarction，4 cases with previous medical history of cerebral infarction，3 cases have old infarcts in Contralateral cerebral hemisphere，DTI of 1 case showed pyramidal tract was not cross，the lesions of 2 cases were in the brain stem，2 cases in centrum semiovale，3 cases in capsule，One was in the putamen and one in the frontal cortex. Conclusion Most of the patients with ipside hemiparesis caused by cerebral infarction had a history of previous pyramidal tract injury，which was mostly lacunar lesions，mostly located in the configuration area of ipside-pyramidal tract.