Pretty cute!!! We have this guy - Tank - he is well over 20, and he is indeed, over in the knee. I have no full knowledge of if that can be completely altered via any specific approach, but any attempt to help, is certainly worth a go. IF it does not change - I guess that will affect certain levels he could reach in a show ring, but in terms of ability to be a very successful driving horse - well, little Tank is a pretty successful driving horse! Only caveat is on just how much one can work him. We use him for an introduction to driving horse, a therapy horse, and we introduce folks to skijoring with him. He excels at all of these things!! Good luck with your little cutie!! This is him giving a client a skijoring lesson!!