Walking is something you learned to do before you were out of diapers, but learning a new way to walk decades later could be a step in the right direction if you have osteoarthritis (OA) of the knee. So-called gait retraining may slow the progression of knee OA, enabling people to continue walking longer and delay the need for knee replacement surgery, saysPete Shull, PhD, assistant professor in the school of mechanical engineering at Shanghai Jiao Tong University and a leader in gait retraining research.

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