How To Treat Degenerative Disease In Tendons Accompanied With Numbness And Hurting Feeling?

I have had 2 surgeries on the outside of my left foot. The first was in June, 2013, and was to remove an extra bone that was lodged in the middle of tendons and muscles, /It was the size of a half-dollar. The second was in Dec, 2013 and it was to remove part of the peroneal tendon, and he tied part of a tendon to another tendon, I am getting electrical surges in my foot like someone is shocking me. Dr said I have degenerative disease in my tendons. /i am 8 weeks out from surgery and still hurtng, numbness and loss of feeling on the outer side if my left foot and getting electrical zaps that last 3-5 minutes. What can I do to get better? One of his diagnosis codes it 726.90 - could you explain this?