muscles cramps in some part of the body maybe because of over fatigue.. if you are going the same things everyday i suggest lessen the activity.. you can also drink vitamins..
sorry to hear you story.. but life is so unfair, shit happens for no reason.. maybe god gave that kind of situation for you to learn something.. but lets not doubt god believe that one day you will be well and can be able to drive again, and not depend others..god will do everything for us...
mostly when we are talking about tendon damage the only thing we could to treat it is that we need a lot of rest. if the injury is caused by over used, i suggest change in work habits that is to prevent recurrence of the problem..