Vets vote with their wallets open
I know of one vet who operated on a 5 month old pup I bred - said it had slipping patella, so did a supposed repair on both knees - an insurance job
I didn't find out until afterwards, so didn't get the chance to explain that it is a hereditary condition and couldn't possibly be in those lines. The pup had been limping for
three days!!! That's all! He said it had to be done as it was a working dog. Lots of pups bang themselves from time to time especially my breed - they take life at the gallop! But they don't need operations usually! I was so mad, that poor little thing went through a huge op for nothing. My own vet would never do that.