Motor recovery via aberrant pyramidal tract in a patient with traumatic brain injuryA diffusion tensor tractography study

doi:10.3969/j.issn.1673-5374.2013.01.012

Abstract

Abstract:

The aberrant pyramidal tract is the collateral pathway of the pyramidal tract through the medial lemniscus in the brainstem. A 21-year-old man presented with right hemiparesis due to a traumatic intracerebral hemorrhage in the left corona radiata. His motor function recovered almost to the normal state at 10 months after onset. Through diffusion tensor tractography, the pyramidal tract in the affected (left) hemisphere showed discontinuation at the pontine level at 13 months after onset. An aberrant pyramidal tract was observed, which originated from the primary motor cortex and the supplementary motor area and descended through the corona radiata, then through the posterior limb of the internal capsule and the medial lemniscus pathway from the midbrain to the pons, finally entered into the pyramidal tract area at the pontomedullary junction. It suggests that the motor functions of the right extremities in this patient had recovered by this aberrant pyramidal tract.

Key words: neural regeneration, neuroimaging, diffusion tensor imaging, diffusion tensor tractography, transcranial magnetic stimulation, pyramidal tract, aberrant pyramidal tract, motor paralysis, motor recovery, traumatic brain injury, head trauma, intracerebral hemorrhage, grant-supported paper, photographs-containing paper, neuroregeneration

Sang Seok Yeo, Sung Ho Jang. Motor recovery via aberrant pyramidal tract in a patient with traumatic brain injuryA diffusion tensor tractography study[J]. Neural Regeneration Research, 2013, 8(1): 90-94.

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