Best Inventions of 2009: The $20 Knee
Now a team of Stanford engineering students has designed a knee that’s not only dirt cheap — just $20 — but also mimics the natural joint’s movements. Developed with the Jaipur Foot group, the JaipurKnee is made of self-lubricating, oil-filled nylon and is both flexible and stable, even on irregular terrain.
The device is being tested in India; more than 300 people have been fitted so far. via @danec