I am looking at buying a Tennessee Walking horse. This will be my first horse. I have a question about its hips. When I first went to see it you could see the hips, I don't think they were showing terribly bad. It still concerned me. The owner said it was due to him being so big, 16.1 hands. Is it a real concern for him to be showing his hip bones? I have tried to research this problem but seem to find not a whole lot of information.