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A 46-year-old male asked:

Does the thumb technically count as a finger?

4 doctor answers4 doctors weighed in
Dr. Shabbir Hossain
Internal Medicine 17 years experience
Yes!: I would argue its the most important finger. The opposable thumb was a critical evolutionary leap for humans!
Dr. Vance Harris
Family Medicine 38 years experience
Digit: The thumb counts as a digit but not a finger in the strict sense.
Dr. Keegan Duchicela
family medicine 15 years experience
According to NLM: The national library of medicine (which is closely involved in the naming of scientific and medical terms) classifies "thumb" under the term "fingers" in its hierarchy. But it was important enough to give it its own term, where the other 4 digits were not. So i guess thats where it stands. And who am i to argue with the national library of medicine?
Dr. Yash Khanna
Family Medicine 58 years experience
Thumb is first finge: Yes thumb is counted as a finger and, in medicine it is counted as first finger, and others are numbered accordingly.

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