Actually - we have changed our mind and now think it is achilles tendon. That was my original thought yesterday, but she wasn't walking at all so I went with knee. So now instead of knee braces does anyone know anything about Achilles braces? Anyone have any experience with dog knee braces? I have looked at websites for ATraC (woundwear) and MuttKneeBrace. I am always hesitate to believe any testimonials. I have a 13 1/2 yr old collie/Chow/GoldenLab/Golden Retriever mix. She had CCL surgery 2 1/2 years ago. I think this is the opposite leg. It has been bothering her, but I thought it was arthritis. I never even thought about the CCL. Today when we came home she wasn't walking on it at all. I called the vet, but they were already gone. I just wanted to get her some pain meds. I gave her an aspirin. At 13 1/2 I don't think surgery is a good option and would like to go with a conservative route. Last week I ordered Canine Complete Joint Mobility (http://www.smartpakequine.com/canine-complete-joint-mobility-2935p.aspx) and DGP (http://www.smartpakequine.com/dgp-5746p.aspx). It is due to arrive on Friday. Suggestions? Thanks!