My sister has a brain tumor. They attempted to surgically remove the tumor, it rests at the base cerebellum, where it meets the spinal cord. In order to do thi

My sister has a brain tumor. They attempted to surgically remove the tumor, it rests at the base cerebellum, where it meets the spinal cord. In order to do this surgery, they had to cut a piece of her spine and in the process cut some nerve pathways. Post surgery, she still has trouble walking and other general motor skills. The brain is the software and hardware, any changes to it will alter its software.