The probability of injuring the other side afterward? We had a golden retriever that had that surgery twice.
Yep, 60%. We asked him to get well practiced on the first side. Wonder if they offer package deals?
Mocha had this surgery when she was 5 but she was lucky that her 2nd knee stayed healthy.
Good. I only heard about it afterward. Not that it would have changed my decision.
It's not so much the surgery that causes the 2nd knee to go. A dog who tears one canine cruciate ligament (CCL) has a higher-than-average probability of tearing his other one because genetics play a big role, i.e. some dogs are just born to tear their CCLs. We learned yesterday that Labs typically have weaker cruciate ligaments than German Shepherds so it's been an expensive decision to fall in love with Labs. :)
The surgeon told us about some newer research suggesting that inflammatory thingies (I missed the noun) from one knee can affect a healthy knee and make the 2nd ligament more likely to tear. If that turns out to be true, then earlier treatment could reduce the probability of a second tear.
Maybe cytokines (unless you're speaking French). I didn't think that's what he said but it would fit.