I acquired a 12 year old Palomino Appaloosa gelding a few months ago. I was told he sustained a stifle injury about 9 months ago and was rested for a few months. He is still "hitchy" off and on but doesn't seem painful and I have watched him canter and frolic in the pasture.
He is about 15'2, is very quiet and loves attention. Has comfortable gaits. Lives on air! He is out of shape. I put front shoes on him but would probably do fine barefoot. He loves trail riding and is not spooky. I think he would make a good beginning lesson horse or a therapeutic riding horse.