MOFFETT FIELD, Calif.--(BUSINESS WIRE)--Tibion, a leader in the development of bionic devices for the mobility impaired, today announced that its product, the PowerKnee, was selected as the winner of the prestigious Silicon Valley/San Jose Business Journal Emerging Technology Award (ETA) for Medical Devices. The PowerKnee is a wearable bionic device for the leg which actively and transparently supplements muscle strength.