Hi Michel

I am sure you know what you mean in your description but younhave not conveyed it very well:

what do you mean you "bounce"when you walk? What actually happens?

And what do you mean your shoulders rotate?

A picture speaks a thousand words so if you could get someone to take a movie of your walking and put it up on a site where we could look at it we may be able to help. However To be frank you may be better off spending the money and going to see a physio.

BTW I can't see how orthopedic can claim That it definitely is due to some neurological impairment of the peripheral nerves from your brief description so I wouldn't take that to heart just yet.