Schematic representation of hindlimb CST remodeling following SCI.

<p>Scheme illustrating the formation of cervical collaterals derived from the main CST (upper row) and the minor dorsolateral (2^nd row) and ventral (3^rd row) CST components at 10 days (blue), 3–4 weeks (green) and 12 weeks (red) after SCI. Bottom row illustrates the refinement over time of the contacts between CST collaterals and cervical interneurons.