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<h1>Amputee climbs 103 floors of Chicago skyscraper using thought-controlled prosthetic leg</h1>
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By Associated Press, <span class="timestamp updated processed">Published: November 4 | </span>
<span class="timestamp updated processed">Updated: Monday, November 5, <span class="time special">10:28 AM</span></span>
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<p>CHICAGO — The metal on Zac Vawter’s bionic leg gleamed as he climbed
the 103 floors of Chicago’s iconic Willis Tower, becoming the first
person ever to complete the task wearing a mind-controlled prosthetic
limb.</p>
<p>Vawter, who lost his right leg in a motorcycle accident, put the
smart limb on public display for the first time during an annual
stair-climbing charity event called “SkyRise Chicago” hosted by the
Rehabilitation Institute of Chicago, where he is receiving treatment.</p><p> “Everything went great,” said Vawter at the event’s end. “The prosthetic leg did its part, and I did my part.”</p><p>The
leg is designed to respond to electrical impulses from muscles in his
hamstring. When Vawter thought about climbing the stairs, the motors,
belts and chains in his leg synchronized the movements of its ankle and
knee.</p><p>The computerized prosthetic limb, like something from a sci-fi film, weighs about 10 pounds and holds two motors.</p><p>Bionic
— or thought-controlled — prosthetic arms have been available for a few
years, thanks to pioneering work done at the Rehabilitation Institute.
Knowing leg amputees outnumber people who have lost arms and hands, the
Chicago researchers are focusing more on lower limbs. If a bionic hand
fails, a person drops a glass of water. If a bionic leg fails, a person
falls down stairs.</p><p>This event was a research project for us, said Joanne Smith, the Rehabilitation Institute’s CEO.</p><p>
“We were testing the leg under extreme conditions. Very few patients
who will use the leg in the future will be using it for this purpose.
>From that perspective, its performance was beyond measure,” Smith added.</p><p>To
prepare for his pioneering climb, Vawter said, he practiced on a small
escalator at a gym, while researchers spent months adjusting the
technical aspects of the leg to ensure that it would respond to his
thoughts.</p><p>When Vawter goes home to Yelm, Wash., where he lives
with his wife and two children, the experimental leg will stay behind in
Chicago. Researchers will continue to refine its steering. Taking it to
the market is still years away.</p><p> “We’ve come a long way, but we
have a long way to go,” said lead researcher Levi Hargrove of the
institute’s Center for Bionic Medicine. “We need to make rock solid
devices, more than a research prototype.”</p><p>The $8 million project
is funded by the U.S. Department of Defense and involves Vanderbilt
University, the Massachusetts Institute of Technology, the University of
Rhode Island and the University of New Brunswick.</p><p> “A lot of
people say that losing a leg is like losing a loved one,” said Vawter.
“You go through a grieving process. You establish a new normal in your
life and move on. Today was a big event. It’s just neat to be a part of
the research and be a part of RIC.”</p><p>Nearly, 3,000 climbers
participated in the annual charity event. Participants climbed about
2,100 steps to the Willis Tower’s SkyDeck level to raise money for the
institute’s rehabilitation care and research.</p><p><br></p></div><br clear="all"><br>-- <br>Art Deco (Wayne A. Fox)<br><a href="mailto:art.deco.studios@gmail.com" target="_blank">art.deco.studios@gmail.com</a><br><br><img src="http://users.moscow.com/waf/WP%20Fox%2001.jpg"><br>
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