Sorry to hear the diagnosis Lissa.........All the hope i can give you is that I am involved with a lot of Newfie people in the USA and it seems to bet the way (stemcell) a lot of them are going with good results. I also give my dogs all the preventatives or in your case assisting natural stuff. Such as cold fish oil, Vit C (very important for puppies) Glucosamine/chondroitin, sardines and kelp. If your dog is a puppy also check what he is eating. Lower the protein level. Go from puppy food to giant if you feed dry food. And even though people used to in the past do not feed added Calcium products, it seems to cause more problems. Get calcium naturally from meaty bones and sardines. We also keep our dogs on what some say is "the light side".......Lean and mean.
Keep us up to date. Just remember that things have changed a lot and sometimes you need second or even third opinions, good luck