The third metacarpal is one of the five long bones in the human hand, located between the wrist and the fingers. It connects the wrist to the middle finger, playing a crucial role in hand movement and grip. This bone is often referred to as the "middle metacarpal" because it is positioned in the center of the hand. Anatomically, the third metacarpal is characterized by a head, neck, and base. It articulates with the second metacarpal and fourth metacarpal at its sides and connects to the proximal phalanx of the middle finger at its head. Its structure provides stability and support for various hand functions.