Suggest Treatment For Increasing Spasticity In Leg

I HAD BRAIN SURGERY 8 YEARS AGO FOR A BENIGN TUMOR - SINCE THE SURGERY I HAVE A DROP FOOT SO WALK WITH A LIMP. LATELY I HAV BEEN NOTICING INCREASED SPASTICITY IN THIS LEG - I AM WONDERING IF THERE IS ANYTHING I CAN DO TO DECREASE THIS. I STRETCH EVERY DAY AND WORK OUT AT THE GYM 2-3 TIMES PER WEEK - I ALSO GO TO THE POOL AND WORK OUT THERE. IT IS ANNOYING AND I AM WONDERING IF THERE IS ANYTHING APART FROM DRUGS THAT WILL HELP ME. KAREN