I have had some tendon trouble (tibial) and the podiatrist suggested surgery after PT.  Only shoe I could wear with comfort was FitFlop sandals.  Found a new PT, got great orthotics and  I am humming along wearing these this winter.  Fit Flops are the answer, no wonder they are endorsed by orthopedists.  Great looking with grey or black slacks.  Like the little bit of bling.  My 22 year old granddaughter even commented that they are cute!  Thought of using them for aerobics but haven't tried that.  Need to order some other colors.