Funny enough there was an elderly boxer outside the vet waiting to go in & when she sat down it was aparent she had exactly the same problem on the same leg as Cass, they were both doing a lazy sit – they looked like a pair of bookends.
I know that I don’t post often just read others advice, lol, but I have a very soft spot for cass, shes a lovely dog. sending big healing hugs to Cassie and to you Mark, you must be worried sick.