Thumb - Wikipedia - with a finger and a thumb

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Trigger Finger - Trigger Thumb - OrthoInfo - AAOS with a finger and a thumb


A thumb is a digit, but not technically a finger. Let’s look into whether or not you can accurately call your thumb a finger. Thumb refers to the first digit of the human hand, set apart and opposable to the other four digits of the hand.

The thumb has a very different muscular apparatus without multi-digit, multi- tendon muscles that are involved in finger action (Moore, ).

Finger-like appearance. Specialty · Medical genetics, plastic surgery. Triphalangeal thumb (TPT) is a congenital malformation where the thumb has three phalanges.