Ulnar Claw Hand (Claw Hand): this is due to a lesion of your ulnar nerve. The MCP joints are hyperextended for the ring and little fingers because of the lack of the third and fourth lumbrical muscles due to a lesion with the deep department from the ulnar nerve. Due to https://www.theorthopaedicandpainpractice.com/what-are-the-different-bones-found-in-my-hand/