My Rottweiler tore his. The vet recommended that we DON'T do the surgery though because he was a big boy and weighed a lot (not fat, just a freak of nature!). Vet said that his weight would not support the surgery and the dog would end up favoring his other leg in which the same thing could then happen. He told us that eventually it would tear completely off, which it did.
A couple of years later his back-end gave out on him, as the vet told us it would, and we did have to put him down (that and a combination of really bad arthritis)....he was 6.
A couple of years later his back-end gave out on him, as the vet told us it would, and we did have to put him down (that and a combination of really bad arthritis)....he was 6.