Flexy Hand and Flexy Hand 2. WRIST DRIVEN: User must have a functional wrist and enough palm to push against the device to force the fingers closed when wrist is bent. The Flexy Hand 2, designed by Steve Wood, is a wearable prosthetic device made using flexible hinges. Using flexible filament for the hinges means that no elastic cords are necessary to return the fingers to their outstretched position. The Flexy Hand 2 is shared under the Attribution â Non-Commercial â Share Alike license.
Metacarpals. The metacarpals are long bones within the hand that are connected to the carpals, or wrist bones, and to the phalanges, or finger bones. The metacarpals together are referred to as the metacarpus ..The tops of the metacarpals form the knuckles where they join to the wrist.etacarpals. The metacarpals are long bones within the hand that are connected to the carpals, or wrist bones, and to the phalanges, or finger bones. The metacarpals together are referred to as the metacarpus ..
From Wikipedia, the free encyclopedia. The first metacarpal bone or the metacarpal bone of the thumb is the first bone of the thumb. It is connected to the trapezium of the carpus at the first carpometacarpal joint and to the proximal thumb phalanx at the first metacarpophalangeal joint.he metacarpal bone of the thumb has two centres of ossification: a primary centre in the shaft and a secondary centre in the base. This contrasts to the other four metacarpal bones where the secondary centre is found in the head.