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