Make sure he knows what he's doing. They can make things worse. That said, I have a horse that was short stepping in the hind end. The first vet thought it was in his hocks and after 800 dollars in bills we saw no improvements. He stayed off for an entire year, couldn't ride him, until my daughter convinced me to try the chiropractor. After two weeks and two sessions he was back in the show pen winning Western Pleasure again. I was amazed! He had one adjustment last year (just maintenance, was not off at all) and didn't need one this year.