can anyone give any advice our 17yr old loan pony is lame but only on tight circles.we've had him about 7 weeks. He hadnt done any ridden work for about a year and now my daughter is hacking him out regularly. He was shod by our farrier first week he came. when having a lesson we noticed he was hopping lame on the right fore leg on tight circles fine when going large. Physio carnt spot anything, farrier is going to have a look this friday just wondered if anyone has any other ideas on why he could be lame.