Eight small bones in your wrist give it flexibility and the necessary range of movements. These bones, arranged in two rows, include the scaphoid and lunate bones in the upper row, close to the ...

Mirror hand syndrome, also known as ulnar dimelia, is an extremely rare congenital (meaning it's there from the time you're born) birth defect that affects your hand. In some cases, your forearm and ...

Prosthetic hands have come a long way, but many are still too unwieldy and impractical for everyday use. Beyond being incapable of a natural hand’s dexterity, most prosthetics can’t offer neurological ...