You used 20 minutes a day it help you in your fracture. You can used this machine at home. Your orthopedic Dr or physiotherapy give training for how you can use Exogen. Uses low intensity pulsed ultrasound to help simulate the body's natural bone healing process and promote fracture healing. It has an 86% heal rate for fractures not healing on their own 1 and provides 38% faster healing of indicated fresh fractures 2,3. You can use for external or internal fracture fixation hardware present. Undergoing treatment for infection at the fracture site. Believed to have diminished bone quality. My father used oxigen for 6 months in his hip fracture. He is walking good now. I bough it for 5000 dollars. It make look new.