The thumb is especially substantial One of the fingers resulting from its thickness and pivotal part in securely grasping objects. The thumb completes the grip when holding a pen, a paintbrush, or a bodyweight at the gym. Boutonniere Deformity: The MCP (metacarpophalangeal) joints and also the DIP (distal interphalangeal) joints are https://www.theorthopaedicandpainpractice.com/what-are-the-different-bones-found-in-my-hand/