Poliosclerosis is a medical term used to describe a condition characterized by the hardening of tissue in the spinal cord, often associated with polio or poliomyelitis. It typically results from the damage caused by the poliovirus, leading to the degeneration of motor neurons and subsequent scarring. This can result in muscle weakness and atrophy, impacting mobility and overall function. The condition can also be referred to in the context of post-polio syndrome, where individuals experience new or worsening symptoms years after recovery from polio.