They actually say in the article that they have had similar results with tendon repair (in the section where they're talking about bone repair). I'm not sure about other soft tissues.

Its unfortunate that because of the laws against the uses human stem cells we already miss out on a bunch of very valid and useful soft-tissue treatments!

There's actually a company that is already doing soft-tissue regeneration (specifically tendons) using autologous stem cells for dogs, very cool stuff! I'll post the link to the article if I can find it! Maybe this could be a viable alternative though!