Dante very, very rarely stands up 'straight' He's always hunched in the front and down low. I probably wouldn't notice it as much if it weren't for Mina. They're built nearly the exact same, and pretty much the same weight, too - but he holds his front end much lower than hers. His shoulder blade is almost always up above his back when he stands. From looking at pictures of other front leg amputees this doesn't seem to be the normal way they hold themselves. He also turns his remaining front leg completely sideways when he's standing and often when he sits. 

I'm mostly concerned because he's still growing - we do stretches and give massages. He's got some massive muscles on and around his remaining front leg.  Will this cause any long term damage to his joints and bones? Is there something we can do beyond what we're already doing, or anything we need to watch for?