The corticospinal tract, also known as the pyramidal tract, is the central descending nerve pathway for voluntary motor function, particularly fine motor control of the extremities. It originates in the precentralis, crosses predominantly (approx. 90 %) to the contralateral side in the Medulla oblongata, and descends as the lateral corticospinal tract to the spinal cord, where it innervates motor neurons[^1].
Anatomy
The lateral corticospinal tract contains the majority of the fibers of the Tractus corticospinalisspinal cord, comprising the fibers that crossed to the contralateral side at the level of the Decussatio pyramidum.
