Simplified family tree of (aberrant) palmar transverse creases: Sydney crease, simian crease & Suwon crease.

MAY 9, 2017

Family tree of (aberrant) palmar transverse crease variations!

Most hands have two palmar transverse creases, the so-called 'distal transverse crease' (a.k.a. heart line) and 'proximal transverse crease' (a.k.a. head line). After Korean researchers presented in 2011 the very first model focussed on palmar transverse crease assessment, a more advanced more is presented here - including multiple variations for the simian crease, Sydney crease & Suwon crease (the latter concept was introduced in the Korean publication).

The innovative aspect in this model e.g. involves the introduction of 'vertical groups', where all variants can represent a variation on a specific constellation (each constellation can be recognized by a specific set of colors used in the picture below).

NOTICE:The significance of the groups & specific variants will be explored in the near future; also, combinations with other factors such as the dermatoglyphics wil be explored (an earlier report involving the Big Five dimension Neuroticism is available HERE).

Family tree of (aberrant) palmar transverse crease variations.

Simian lines, Sydney lines & Suwon lines are always required to have a '(complete) transversing constellation' that crosses the full palm. Only in Sydney lines and Suwon lines there is also another accessory line present - which should not make not any direct connections with 'transversing constellation'. In Sydney lines the accessory line is usually a normal heart line located independently above the 'transversing constellation', and in Suwon lines the accessory line is usually a normal head line located independently below the 'transversing constellation'.

Finally, one should als be aware that a crease can only be recognized to represent a 'transverse crease' when it has the appropriate location, enough length (at least half of the palm), and enough width (at least two times of the epidermal groove width). Remnants are found in the right location but usually do not have enough length.

I = thenar crease [life line] | II = proximal transverse crease [head line] | III = distal transverse crease [heart line]

Palmar transverse crease variations: normal - double - Suwon crease - Sydney crease - simian crease.

More about the PALMAR CREASES

Martijn van Mensvoort - Hand Research

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