Whenever there is pain due to loss of bone integrity, I think of Symphytum officinale, the western herb. If the dog has no liver issues, this herb should be well tolerated given orally at a dose of 0.2 ml per 5 lbs dd BID. If you are in the US, you probably won't be able to find it, but the homeopathic version will work well.
Hoxsey and Boneset is also a good option, given its content of Boneset, which is a powerful analgesic for deep-seated bone pain and inflammation. If the dog has strong digestion and appetite, the formula should be well-tolerated. Give up to double the dose quoted above for the Symphytum.
Hope that helps you out,
Steve