摘要
The Simian and Sydney creases are variant palmar creases which have now drawn medical attention as their presence correlates strongly with numerous chromosomal anomalies and diseases. Works on these creases have been done on several human communities, racial and ethnic but no specific study is focussed out on the Indian populations. In this study 1000 Central Indian subjects (500 males and 500 females) aged between 5 to 70 years were randomly selected and examined by the authors. We found the prevalence of Simian, Sydney and Suwon creases in studied population of Central India is 14.4%, 3.6% and 2.4% respectively, which is a little higher than the figures for Asians and Caucasians claimed by earlier studies. There is no any association between these creases. The Simian crease is predominantly unilateral right side and associated with handedness. It is more common in males. The Sydney crease does not have unilateral or bilateral predominance and association with handedness but it is more common in females. The Suwon crease does not have unilateral or bilateral predominance and association with handedness but it is more common in males. There is no association of these creases with anomalies/diseases/syndromes. Conclusively this work draws attention to the importance of undertaking parallel investigations on every socio-cultural human group or population wherever possible. Los pliegues simiescos y de Sydney, son pliegues palmares variantes que en la actualidad han llamado la atenci車n m谷dica, ya que su presencia se relaciona estrechamente con numerosas anomal赤as cromos車micas y enfermedades. Investigaciones sobre estos pliegues se han realizado en diferentes comunidades humanas, raciales y 谷tnicas, pero ning迆n estudio espec赤fico se centra sobre las poblaciones ind赤genas. En este estudio 1000 sujetos de la India central (500 hombres y mujeres 500) entre 5 y 70 a os fueron seleccionados al azar y examinados. Se encontr車 que la prevalencia de los pliegues Simiescos, de Sydney y de Suwon de la poblaci車n estudiada es de 14,4%, 3,6% y 2,4% respectivamente, mayor que los porcentajes en asi芍ticos y cauc芍sicos. No hay ninguna asociaci車n entre estos pliegues. El pliegue simiesco es predominantemente unilateral derecho y se asocia con dominancia manual. Es m芍s com迆n en los hombres. El pliegue de Sydney no tiene predominio unilateral o bilateral, ni asociaci車n con dominancia manual, pero es m芍s com迆n en las mujeres. El pliegue de Suwon no tiene predominio unilateral o bilateral, ni asociaci車n con dominancia manual, pero es m芍s com迆n en los hombres. No existe ninguna as