What does the evidence say is the best treatment (other than a total knee replacement) for knee osteoarthritis?

Dr. Harriet Hall just did an excellent review of The American Academy of Orthopaedic Surgeons (AAOS) new report evaluating the evidence on what is the best treatment for knee osteoarthritis (OA)!  You may be surprised at what has good and bad evidence to support its usage for the treatment of knee OA!  HINT:  you can do one of these at physical therapy!