Hi I have come across two perthes disease patients. one is around 10 years age and other is 4 years. Orthopaedician adviced them to not bear weight for a year or two (???!!!!). It is impossible for them to be not to put weight for that much time. So I have decided to give a weight reliving KAFO (Ischial weight bearing) for them and went ahead. I have to yet see the present Xrays to see any change in the growth of the head of femur.
But after 3 months I found the muscle of that side wasted for the 1st patient. Now I am giving him non weight bearing resisted exercises to regain the wasting.
Once I see the result of growth I will reply you
Cheers
Arun