What are you thinking? Just cause I am curious he run and moves and the veterinarian said that is joints and and everything look good so I am just wondering what I need to ask my vet and or look for
He's young at least. You stand a better chance of fixing this t because of that. Personally I get the feeling he's healthy but a quick check for a UTI won't hurt.
I really think the issue is that the dogs natural instincts to not sit in their own filth has been basically overridden out of necessity. It's very hard to house break a dog when you can't harness their natural denning instincts.
Usually you start with a small space like a kennel so they hold it for a short time because they don't want to mess themselves. And you slowly increase the time and expand they space you expect them not to mess in
First a kennel, then a small room, then eventually they see the whole house as their den. First for an hour, then for a little more and a little more, until they can hold it for a few hours.
I really think getting with a trainer will be your best bet. Like I said, you aren't starting from scratch. The dog has already been trained that they have to sit in their filth. You have to untrain that and then retrain.
Also, this is a big thing. You can correct then for potting In the house if you catch them in the act. Just a quick "ahah! Not that!" And usher them outside. Punishing a dog after the fact does not work. Dogs don't have human logic. If you come upon an accident after the fact and you fuss at them all you did is fuss at them for going to the bathroom (making it more difficult to get them to go in front of you outside) NOT for going to the bathroom in the house. They simply don't have that logic.
I worked as a dog trainer for years and I could give a 1 hour seminar on potty training lol. I could go on and on. So I think getting with a trainer who can walk you through all of this will just be much less of a headache than trying to do this on your own. You've clearly potty trained dogs before without issue. This is a different case than normal.