I would start with PROMAXOL. It helps to decrease pain and inflammation and stimulates healing. Initially I would give a half dose with breakfast and supper. After improvement is seen you can decrease to a whole dose once daily. For longer term management you can switch to ARTHRO-IONX. In addition I find it helpful to follow a holistic approach by giving some nutritional supplements to accompany the homeopathic. I would use MSM, vitamin C, probiotics, and Omega 3,6,9. What type of food and water are you giving?
I would also suggest an evaluation by a veterinary chiropractor. If a correction is needed, that can help with better movement. If there is misalignment proximal to the knee it will stress out the knee. Please keep
us updated and we can help guide you. Also I would avoid any vaccinations with Lepto in it. Berners seem to have more problems than other breeds with that part of the distemper DHLPP vaccination. You can request DHPP be given instead. Until the knee is stable you might want to delay any more distemper vaccinations for a while especially since the Rabies vaccination will probably be given soon.