Rick,
Went through this with Billabong approx. 15 years ago.
Happened during a "romp" with Winkipop at a nursery while I was there to pick up plants. I always let the girls out to tear around in the back areas, which of course they loved. Billabong came up limping. She and Winkipop both lived to almost 17 and Winkipop never blew hers out.
After I had Billabong's done it was about a year later the other side went, as the vet had predicted. So we had that one fixed. Both repairs took and things went just fine for the rest of her days....which was about 10 more years.
I was very fortunate to find the right vet who was familiar enough to do the particular procedure I wanted. The Arthrex Tightrope. I had done my own research and discovered this procedure and so set about making phone calls trying to find a vet who knew about and could perform it. And I did - and he was great! In fact he had already done a bunch of them and even had consultations over time with the vet at the University of Missouri Vet School, who was one of the nation's authorities on it.
The product is actually produced by a company in Naples, FL:
https://www.arthrex.com/corporate
This procedure is not recommended for animals over 40 lbs. And the vet will first need to shoot some xrays to determine if it is the right approach for your dog.
The cost (back then) was under $2K and since this is minimally invasive the recovery time was shorter.
Here is a couple videos showing how it works......good luck and please keep us posted!