
Hi Jo
The cost of total hip replacement was £1750 per hip, when I had my (now departed) GSD's done. How early it is done IF it proves to be necessary depends on dog. The preference is to do them later, so that the implants 'last' the whole of the dogs life. If however a dog is suffering terribly, they can be done earlier.
In the meantime, definitely follow the other posters advice on supplements, also I found Cortaflex can help. The vet may prescribe Metacam if pain becomes evident. This can help too. My old GSD had awful hips, but was like a pup again after the hip replacements. She had both done, but that is rare. More frequently it is only a case of having the worst one done, and this compensates for the poorer hip. Having the ops for my girl was the best thing I ever did.
The difficulty with insurance is that if you have a company that excludes after 12 months, they will not pay for an op beyond that time after clinical diagnosis. If you have a company that doesn't limit you're OK. Otherwise, start saving just in case! There are also alternative surgeries to Hip replacement, FHO, where the ball joint is removed, and triple pelvic osteotomy, where the pelvis is resituated so the ball sits in the socket in a better position. You can find loads of info on the ops on the web.
Once you have the x-rays, you/they should be referred to an orthopaedic specialist for advice.
In terms of exercise. Little and often is best, swimming is brilliant as it exercises the legs and joint without trauma of weight. I personally don't believe that it's worth taking the joy out of a dogs life, by stopping doing everything they love.
If you ever want to chat about it feel free to e-mail me.
Good luck, and remember, it isnt the end of the world - it can be overcome.
Kat