The Sydney Line & the Simian Crease are like ‘Fraternal Twins’!
Many people are fimiliar with the concept of a simian crease, but there is a likewise fascinating line that has a likewise significance: the Sydney line. In modern medical science both the simian crease & the Sydney line became known as a ‘minor physical anomaly’!
In a 1967 Belgian study Vrydagh-Laoureux pointed out that next to the well-known simian crease (or ‘simian line’ - which became well-known for it’s significance in Down syndrome), there is actually another hand line variant that is associated with related to Down’s syndrome. In the Belgian study this line was described as an ‘extended proximal palmar crease’.
NOTICE: In the traditional palmistry vocabulary this line is often described as: an ‘extended’ or very long head line.
Interestingly, only one year later Australian researchers (Purvis-Smith & Menser, 1968) found that this fascinating palmar line is also frequently found in the hands of patients with congenital rubella – and from that point this ‘fraternal twins line’ of the simian crease has been named: the Sydney line (or sometimes named: ‘Sydney crease’). This twin-analogy could become valuable because many people often find it difficult to discriminate a simian line from a Sydney line!
Purvis-Smith defined the Sydney line as follows:
“A sydney line occurs where the proximal transverse crease extends beyond the midline axis of the fifth finger towards the ulnar border of the palm the ulnar border of the palm.” (Purvis-Smith, 1972)
MINOR PHYSICAL ANOMALIES:
At the end of 20 century a new trend became appearant within the medical scientific community. Researchers began study so-called ‘minor physical anomalies‘ - which concern typically harmless inborn physical markers (that are typically associated with a specific prenatal period) – that have been associated in various disorders.
MULTI-PERSPECTIVE PALM READING:
Multi-Perspective Palm Reading demonstrates how the Sydney line & simian crease can be understood as a likewise hand line markers. Because (so far) a wide range of studies indicates that in far most diseases & syndromes where the simian crease has been recognized as a significant body marker… the Sydney line became recognized as a likewise significant body marker.
This pattern is seen e.g. in: diabetes mellitus, Down syndrome, fragile-X syndrome, rheumatoid arthritis, and schizophrenia!
Finally, discussion in the Modern Hand Reading Forum have shown that – despite the fact that a Sydney line and a simian line can never be observed in one hand - for many people it quite hard to discriminate a Sydney line from a simian crease. The picture below presents a few fundamental clues which could become helpful to understand the essential components of both lines.
NOTICE: A ‘common hand’ is featured with a life line [I], a head line [II], and a heart line [III]; and various hand line variations can be summarized with the following formulas [IIx = extended head line; II+III = simian crease]:
• COMMON HAND = I + II + III
• SYDNEY LINE = I + IIx + III
• SIMIAN LINE = I + II-III
Obviously, there is a fundamental difference between the Sydney line and simian crease – therefore it appears more appropriate to describe them as ’fraternal twin lines’ instead of ‘identical twin lines’; because while they have a common nature… their manifestion shape is definitiely not identical.
More details are discussed in the following discussion: