The four major nerves, which used to go down Jesse's arms, were dissected from his shoulder and transferred on to his chest muscles.
The nerves grew into the muscles, which then allowed him to direct his senses through his own brain impulses.
He can now raise his elbow, open and close his hand and rotate his hand and lower it.
I didn't realize the technology was that advanced. It's needed:
There are thought to be over 500 service men and women who have returned to the US from Iraq and Afghanistan as amputees and Dr Kuiken said he hoped that the groundbreaking technology could be used to help them.