February 2, 2010
The word ‘dermatoglyphics‘ was introduced in 1926 by Harold Cummins – the word refers directly to the study of the patterns & characteristics of the skin ridges in the human hand (and foot). What are the basic characteristics of the dermatoglyphics in the human hand?
In most populations around the world is the ‘ulnar loop’ the most observed fingerprint pattern (see: the fingerprint of the pinky finger in the picture above). Loops are most frequently found on the little finger (and middle finger); loops are least frequently found on the pointer finger.
The variations in the dermatoglyphics of the handpalm are much more complex than the variations in the fingerprints. An important element concerns the presence of the ‘palmar triradii’ (see: a, b, c, d, and t in the picture above): normally each finger is featured with a palmar triradius – triradius t belongs to the thumb (the thumb mouse – a.k.a. as the ‘thenar’, or in palmistry: ‘mount of Venus’ could be recognized as the third phalange of the thumb).
T = L + D – 1
More details available via:
Picture: example of the most common patterns in the dermatoglypics of the palm and fingers.
[NOTICE: The picture below includes a small mistake: the hand palm usually has 1 single palmar ‘loop’ featured with 5 palmar triradii – this implicate that ‘c-line’ (which starts in the triradius below the ring finger) should have ended between the pinky finger and the end of the heart line – and not between the ring finger and middle finger as indicated by the picture]
What if a person has no fingerprints? Likely there are 2 options: (1) the person was born without fingerprints (due to a genetic disorders), or (2) the person has ‘lost’ his/her fingerprints during a chemotherapy (in a cancer treatment) – a missing fingerprint is often featured with the ‘hand-foot syndrome’.
|By the way, having no fingerprints used to be no big deal. But the situation is changing rapidly due to the evolving applications of biometric fingerprint readers. In many countries fingerprints are required to: pass the nation’s border, and to get a drivers licence and/or passport!
TWO ANECDOTES FROM THE PAST FEW YEARS:
“Last month (april, 2009) a Singapore-based medical oncologist reported a letter that was presented online in the journal ‘Annals of Oncology’, titled: Travel warning with capecitabine. The trade name fot the cancer medicine capecitabine is ‘Xeloda’ – a medicine that is often prescribed in patients with breast cancer and colorectal cancer. But the oncologist’s patient had been using the drug to treat his nasopharyngeal cancer.
Two years ago, Spanish cancer doctors reported a likewise story about the 39-year-old flight attendant Cheryl Maynard detained for several hours at a U.S. airport until her doctor faxed an explanation that the capecitabine she’d been taking for breast cancer had erased her fingerprints.”
MORE FASCINATING ‘FINGER’ STORIES: