Finger and Palm Dermal Ridge Patterns in Normal and Mongoloid Individuals (The Down Syndrome)

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Abstract
The finger and palm dermal ridge patterns in a sample of Swedish mongoloids show distinct differences from those of normal Swedes. Compared to normals, mongoloids were found to have an increase of ulnar loops and a decrease of the other finger-print patterns. In the mongoloids the frequency of pattern occurrence is high in the hypothenar and 3d interdigital areas and low in the 4th interdigital area. With regard to both the dermatoglyphic patterns and the atd angle there is, in general, a good agreement between the results of this study and those of previous investigations. In mongoloid males the frequency of typical four finger line is significantly higher than in mongoloid females.

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