On the other hand, palmar venous return could also performed to the dorsal venous community through perforating branches from the palmar metacarpal arteries in order to avoid restriction for the duration of gripping steps from the hand. The most crucial veins of your hand are: Boutonniere Deformity: The MCP (metacarpophalangeal) joints https://www.theorthopaedicandpainpractice.com/what-are-the-different-bones-found-in-my-hand/