There are two methods for this surgery, my Tawny has had both, the first time was about 5 years ago. on one knee, she had theis method iwhich completley changed the shape of the knee so, there would be any movement back and forth. This is very serious surgery and take a long time for recovery but it was worth it and should only be done by an orthopedic surgeon. The second time we just didn't have the $1400 cdn and our vet used a wire method. She bore holes and tied wire around the joint, Tawny has developed arthitis in this knee but she is using Medicam (no steroids) daily and get around really well. She is 13 going on 2. Both methods require about 6-8 weeks of being very careful, no walks for the first while even to get her pee mail. It was well worth it. Don't wait too long as they are in pain.