I am sorry to hear about Josh's hips.
The only real treatments for HD are surgery and prevention/maintenance. We chose not to do surgery for two main reasons. 1. zoey would have had to go through two surgeries (one per hip) each with a long painful 3 month recovery with a lot of confinement. we felt like this was too much to put her through. 2. It is extremely expensive and more than we can really afford anyway. We chose prevention/maintenance instead. There are many things that you can do to help the hips. Here are a few things you can do right now to try and help ease his pain:
1. Reduce his weight. The more weight on the hips, the more the pressure. So putting him on a diet to make him lean is one of the most important things you can do.
2. Do not allow him to jump. If you take him in the car, buy a ramp so that he can walk up.
3. Make sure that he has lots of good cushy beds to lay on. Hard floors are tough on sore hips.
4. Try a glucosamine/chondroitin/msm supplement. I find the liquid ones to be best. Many people swear by cosequine, but when I switched to it I could see the difference.
5. If you can afford it, check to see if anyone in your area offers theraputic dog massage or hydrotherapy.
6. Prescription anti-inflammatories or pain reducers can also help.
If you ever need to talk, you can pm me. I know how you feel it feels to deal with HD - I cried for an entire day when I learned my Zoey has hip dysplacia.