My pony has been lame for about 5 months now and we don't know what is wrong! She went dead lame at a show after a jumping course. So we put her on stall rest and called the farrier. He couldn't find anything wrong that could have caused the problem. So we called the vet to take x-rays and couldn't find anything. We also blocked below the fetlock and she was fine. But we don't find anything wrong down there. My trainer thinks she might have torn a muscle on her shoulder. She has been on stall rest and limited time outside in a round ring. She got better and we rode her some and she was perfectly fine. Wasn't off one time. But then this weekend she walked just fine but couldn't trot at all. So do you have any ideas on what it could be? Or what we could do to help her? And should I get a chiropractor to come out and check her?