Electrical power grip: This grip employs the power of bigger hand muscles to carry or move significant objects, like when you’re lifting weights or twisting open a tight jar lid. It’s all about power and stability. Boutonniere Deformity: The MCP (metacarpophalangeal) joints as well as DIP (distal interphalangeal) joints are impacted.  https://www.theorthopaedicandpainpractice.com/what-are-the-different-bones-found-in-my-hand/