Using a new combination of the BiOM ankle/foot from iWalk and Ottobock’s X2 knee, retired Marine William Gadsby successfully hikes mountain trails and sand dunes. The BiOM has an active push-off when climbing stairs, and the X2 knee is able to anticipate and adjust for the user’s next step. Both use microprocessor systems to offer real-time adaptation to the environment. Pairing the two devices is a relatively new development, so more study is needed, say VA clinical care providers Dr. Joseph Webster and Dr. Joseph Miller.

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