Two years ago, George Wolf was injured in a hang-gliding accident. His left leg was amputated below the knee.
He now has an artificial limb, but he longs to walk with fluid movement.
When he heard that fellow Arizona State Universityprofessor Thomas Sugar was looking for candidates to test a new spring-loaded robotic ankle that his team was developing, Wolf couldn't wait to volunteer.
The Arizona Republic... http://ow.ly/PTKG...
