<qa>  What is the average Ashworth Scale score in the lower extremities?To demonstrate that Intrathecal Baclofen ITB Therapy, compared to Best Medical Treatment BMT, has superior efficacy in the treatment of severe spasticity in adult post-stroke patients with generalized spastic hypertonia who have not reached their therapy goal with other treatment interventions assessed by a decrease in the average Ashworth Scale AS score in the lower extremities. 