Is Thumb a Finger or Not?

A thumb is a digit, but not technically a finger. Many people don't make the distinction between thumbs and other digits.

What is a thumb if it's not a finger?

It's therefore more accurate to describe a thumb as one of five digits that we have on each hand, rather than as a finger. ... However, the thumb only consists of one joint and two phalanges(bones), whereas the other four digits have two joints and three phalanges.

Is a thumb a finger or a joint?

Thumb. The thumb digit has only two phalanges (bones) so it only has one joint. The thumb interphalangeal (IP) joint is similar to the distal interphalangeal (DIP) joint in the fingers. The IP joint in thumb is located at the tip of the finger just before the fingernail starts.

Maya Lin-Takahashi

Maya Lin-Takahashi

Consumer Tech & Gadget Reviewer

Maya is a hardware enthusiast who tests and reviews smart home devices, smartphones, wearables, and audio gear. She focuses on practical consumer value and build quality.