The most anterior is the pyramid or motor tract, the decussation of which has been seen.
Physicians are not without the use of this decussation in several operations, in ligatures and union of dissolved continuities.
This arrangement is termed the decussation of the anterior columns of the medulla.
decussation dec·us·sa·tion (děk'ə-sā'shən, dē'kə-)
A crossing in the shape of an X.
An X-shaped crossing, especially of homonymous nerves or bands of nerve fibers, connecting corresponding parts on opposite sides of the brain or spinal cord.