University of North Carolina School of Medicine found that knee or hip arthritis may be caused by your shoes. Almost 20% of those with hip arthritis and 16% of those with severe knee osteoarthritis had about a 3/4 inch greater length in one leg. Neither the individual nor their doctors were aware of the discrepancy.
The simple solution is to get shoe lifts to correct the difference in leg length. Wouldn't it be great if everything were solved so easily.