Technology has been instrumental in creating realistic and lifelike prosthetic limbs over the past several years. One of the most impressive examples yet comes from Hugh Herr, an associate professor of media arts and sciences at MIT.

A double amputee himself, Herr has created a bionic ankle packing two microprocessors and six environmental sensors. The device is able to adjust ankle stiffness, power, position and damping thousands of times each second to provide the wearer with a more natural gait – something that could go a long way in helping to prevent osteoarthritis as a patient gets older.

In the clip above (starts around 17 minutes in), you’ll see professional dancer Adrianne Haslet-Davis dance the rumba after losing part of her leg during the Boston Marathon bombing last year. As you’ll see, the fluidity of the limb is certainly impressive and you’d be hard pressed to notice anything out of the ordinary if it were under a pair of jeans, etc.

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