Aim for the hand, thumb to index finger.

Johns Hopkins University engineers have developed a pioneering prosthetic hand that can grip plush toys, water bottles, and other everyday objects like a human, carefully conforming and adjusting its ...

In fact, more than three-quarters of infants suck their thumbs or fingers through the first year of life. A child usually turns to the thumb when bored, tired, or upset. It is not uncommon to see ...