Symmetry measurement study of dermatoglyphic and minutiae patterns in the thumb of the right and left leg in Fars persons of special schools in Birjand

Dermatoglyphic is a science that study the lines in the skin of the palms and fingertips properly. There are some certain points at these lines that called minutiae. In some studies, the relationship between dermatoglyphic patterns with some diseases has been proven IQ is one of the important tools of development. The aim of the present study is to easily use the characteristics of the hand for the early recognition of IQ.

In this observational analytical study that was conducted in 2022, 50 Intellectual Disabilities students, 60 intelligent students and 100 normal students in the age group of 7 to 18 years living in Birjand city were investigated. The fingerprint was recorded by the scanner. Then dermatoglyphic and minutia patterns were determined. Data were processed with Excel and spss software.

According to the results, the maximum frequency of dermatoglyphic patterns in both legs was related to the loop type. Examining the frequency of minutia patterns in the thumb of the right and left leg in three intelligent, Intellectual Disabilities and normal groups showed the difference between them. The variety of minutiae patterns was further in intelligent student than in other student. Also, in all three groups, the average line count of the left hand was lower than of the right hand.