The third metacarpal is one of the five long bones in the hand, located between the wrist and the fingers. It connects to the carpals at the wrist and supports the middle finger. This bone plays a crucial role in hand movement and grip strength. Anatomically, the third metacarpal is positioned in the center of the hand, making it essential for balance and coordination. It has a head, body, and base, with the head articulating with the proximal phalanx of the middle finger. Injuries to this bone can affect hand function significantly.