I bought an arc machine for my thoroughbred. He was scanned by my vet as was lame, the scan showed a large hole which was the cause of the lameness a damaged tendon. After 6 weeks of box rest and wearing the machine daily for the whole 6 weeks he was rescanned and the vet was shocked, she thought we scanned the wrong horse as there should have been some sign of the injury but there was nothing. The horse was sound again and continued his career. I have also used the machine on myself when had a bad back and again, amazed by the results! A MUST for any equestrian!