We can easily understand the setting in real-time due to the fact neurons convey messages that shift through the nerves at a unprecedented pace. Boutonniere Deformity: The MCP (metacarpophalangeal) joints and the DIP (distal interphalangeal) joints are affected.  The main destruction is to flexion of the proximal interphalangeal joints as a https://www.theorthopaedicandpainpractice.com/what-are-the-different-bones-found-in-my-hand/