Earlier this year, we heard about a proposed arm- and leg-powered bicycle known as the 4StrikeBike. At the time, we knew that if it were to reach production, it would be facing some competition ...

After an amputation, many choose to use a prosthetic arm, hand, leg, or foot. Learn more from WebMD about these devices and how to use them.

Lyric Mariah has two prosthetic legs — one named Bertha, for sneakers, and the other, Tina, for high heels. Now a model in London, Mariah has amassed more than 300,000 followers on TikTok and ...