Article

Several studies have reported on injury of the corticoreticular
pathway in patients with stroke and traumatic brain injury.
However, little is
known about injury of the corticoreticular pathway in patients with subarachnoid
haemorrhage. The aim of the current study was to investigate corticoreticular
pathway injury in patients with subarachnoid haemorrhage. DESIGN: Comparative study. SUBJECTS: Among 137 patients with subarachnoid haemorrhage, 17 patients
with motor weakness who showed intact integrity of the corticospinal tract were recruited. METHODS: Motricity Index was used for measurement of motor function.
The fractional anisotropy value, apparent diffusion coefficient value, fibre
volume, and integrity of the corticoreticular pathway were used for the diffusion
tensor imaging parameters. RESULTS: Twelve (70.6%) of 17 patients and 18 (52.9%)
of 34 hemispheres showed a discontinuation of the corticoreticular pathway at the
midbrain level. The contralateral shoulder, hip, and lower extremity of the
discontinued corticoreticular pathway showed lower motor functions, in comparison
with those of the contralateral side of the intact corticoreticular pathway (p <
0.05). By contrast, the Motricity Index for distal joint, upper and total
Motricity Index were not different irrespective of the state of the
corticoreticular pathway (p > 0.05). CONCLUSION: Corticoreticular pathway injury
is common in patients with motor weakness after subarachnoid haemorrhage, and it
appears to be related to weakness in the contralateral shoulder, hip and lower
extremity.

Langue : ANGLAIS