I Am A Male 52 Years Old.before Getting My Ankle

i am a male 52 years old.before getting my ankle ligaments torn i was able to walk long distances.Doctors gave me oxycodine for a year and a half before insurance would let me have ankle reconstruction surgery.After recovery i have soreness in stomach area when bending and moving.Leg are heavy and stay tired even after resting.I am 80 lbs over weight,cant lose weight since taking meds for pain so long.Before getting hurt i was able to walk long distance and lose weight.Please give advice.