I have not formally met you, but I was at the San Mateo ISE when Talladega made her comeback. What an inspiration to see her jump as far as she did on 3 legs. It was incredible. I am sorry to hear that she has developed arthritis in one of her back legs.
I have a 12 year old female golden retriever that was limping pretty bad on her back right leg and was diagnosed with hip dysplasia over 2 years ago. My vet wanted me to put her on Rimadyl, but I had heard that Rimadyl can cause death in some dogs, so I chose not to go that route. After doing some research on the web I found a product called Nyzmes. It is a antioxident and has proven to help arthritis and hip dysplasia, not to mention a lot of other health ailments in dogs, cats, horses and people. After about 4 weeks on the tablets, I started to see an improvement and to this day she no longer limps. You can go to their website - nzymes.com to check out the product. I also have her on Drs. Foster and Smith Joint 2 supplements which contain the Chrondroitin, Glucosamine and MSM.
I also have had some friends try accupuncture for their dogs arthritis, which also seems to help.
There seems to be some different approaches to arthritis. It might just be trial and error until you can find something that works for her.
I am sure you will find something that will help her.
Hope to see you again in one of the upcoming Splash Dog events.
Skyy SRD - B 6/20/09 PB 18'
Roxy SPD - B 7/17/10 PB 10'5"
Teal - PB 19' 2"
Shasta Splash Dogs