A digit includes the hand bones but these bones are not separated into individual appendages like a finger. Instead it is contained within a single structure – the hand. Tendons attached to muscles within the hand and forearm are responsible for the different movements of the fingers.

Fingers are one of the most used appendages, and the most delicate, so they are prone to injury. Finger injuries have the potential to slow down anyone. Fingers have a complex anatomy. Each finger has 3 phalanges (bones) and 3 hinged joints; the thumb has two of each.

The thumb, and the rest of the fingers, are appendages or digits of the hand. While the thumb is distinctly different from the other four fingers, many medical professionals consider it a finger due to differences in size, bones, joints, and function.