Being newer to horse ownership and all, I really failed to look into this earlier but these look like a sacroiliac injury of some sort. I'm disappointed that the seller (a reputable nice lady) knew I was a young beginner and failed to notify me about something like this, but I've surely learned from experience and mistakes in the past. Should I have a vet see my horse? I just wanted some other opinions. She doesn't seem to be in pain and happily bucks, canters, jumps, whatever horses usually do in the pastures. She's from the Amish so I don't have a background on her. I only trail ride so it's mainly walk and little trot. She has no problem getting around, shows no reaction to pressure in that area, but she does place her left hind hoof slightly inward. Buying an Ex-Racehorse: Can You Spot the Major Physical Issues? - The Horse's Back Referencing off of this article, it really seems like she did have an injury with all of the symptoms and photos. Does anyone else have experience with this, are there ways to correct it or perhaps relieve it if there's pain?