Hello, Dogs knuckle for one of two reasons: muscle loss or weakness from atrophy (chronic non-ambulatory use of a muscle causes it to shrink), or inability to innervate the muscle because the nerves can’t talk to them. I don’t know which one your dog has but your vet can help identify these. It is important to keep placing the feet correctly and encouraging your pup to stand so they don’t lose muscle and can hopefully regain walking as hopefully heal from their spinal injury. Physical therapy is a key part of recovery and lots of dogs knuckle with this disease.… Read more »