A few months ago, we took our limping dog to the vet (he started limping after playing ball in the park)-the vet said slight HD. So for the past few months we had her on glucosamine-now she improved, but would have bad days and never completely healed. Now yesterday she was turning the corner in our kitchen, let out a huge yelp and the same leg was up in the air-we rushed her to the vet-now is says tear in acl-and a chipped fracture, we need to call a surgeon on Monday!!! First does it seem weird one time HD another time ACL, second does anyone know costs of surgery for ACL? We want to get this done as soon as possible, she is in sooo much pain and has not moved since yesterday, just lays there!!!-But at the same time, we are concerned about what it really is-how is the acl diagnosed (she had an x-ray)-and if we get the surgery, will the torn acl just come back??? Sorry for all the questions!!