Do you have a dog that is limping in the hind leg, worried that it might be a torn cruciate ligament which could lead to a TPLO? These are 5 tips for determining if it is a cruciate ligament injury (CCL). Perhaps you have been to the vet and they were not sure, or maybe today you realized that your dog is not really weight bearing on a hind leg. This video could help you down the path of figuring out what is wrong.