What does "Third and fourth digit" mean in a report or doctor's letter? In our medical dictionary, you will find a patient-friendly explanation of the meaning of this medical term.
"Third and fourth digit" in the context of medicine typically refers to the fingers on a person's hand. The first digit is the thumb, the second is the index finger, the third is the middle finger, and the fourth is the ring finger. So, if a doctor mentions the "third and fourth digit", they are usually talking about the middle and ring fingers.
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