Create multiple path to the same node?

Hello,

Is it possible to create automatically multiple path to the same node?

Explanation :
I have a multilingual web site French/English.
And I use Themekey to change template depending on the path.

The matter is :

• I have to create a simple theme that respects accessibility rules available for any pages in any language.
• It must be available in one click.
• It must work like translation, i.e : Standard French or English page - click - Same Page in the same language but with the accessibility theme.

Creating an accessibility theme is easy, but I don't know how to put in in my website without duplicating every pages.

What I thought :

• Create a dummy path that will only load the accessibility theme.

Example :
http://mywebsite/fr/academie => load the academy page in french with academic theme .
http://mywebsite/en/academy => load the academy page in english with academic theme .
http://mywebsite/fr/recherche => load the research page in french with search theme.
http://mywebsite/en/research => load the research page in english with search theme.

http://mywebsite/accessibility/fr/academie => load the academy page in french with accessibility theme .
http://mywebsite/accessibility/en/research => load the research page in english with accessibility theme .

Does some one knows how to do that?

Thanks in advance !