I have a three year old Jack Russell mix. He has played with a dog we got from the shelter when he was just a pup and at the time thw same size. For the last year and a half that have played nonstop. I noticed a couple weeks ago he was carrying his right rear leg up a sleep walking on three legs. I took him in and was told he had a torn ACL. From what I've heard it's a $3000 operation, but I have seen an alternative; a fitted brace. Does anyone have any experience or thoughts on the topic?