Link between buccal extostoses and Dupuytrens constricture?

I have buccal extostoses. I also have Dupuytren’s contracture. I am wondering if there is any relationship between the two conditions. Might whatever is causing the lumps in my hand also be manifesting itself as growths on my jawbones? My Web search hasn’t turned up anything but maybe I have not asked the question of the search engine properly.