The ligament is definitely torn/ruptured or whatever they want to call it. Dog is not supposed to run, jump, climb stairs, or otherwise be active. Poor guy. All his favorite things. And his brother can’t figure out why he’s not being more playful. Surgery is scheduled for next Weds. I’ll take him up on Tuesday and hopefully pick him up on Thursday. This is going to be very spendy. Help a dog, buy books. Sigh.