Palmar and digital dermatoglyphic patterns in Malawian subjects

Area of Science:

• Anthropology
• Genetics
• Forensic Science

Background:

• Dermatoglyphics, the study of skin patterns, offers insights into human variation.
• Establishing population-specific dermatoglyphic data is crucial for anthropological and forensic applications.

Purpose of the Study:

• To determine and document the normal palmar and digital dermatoglyphic patterns in a black Malawian population.
• To investigate potential sex differences and compare findings with other populations.

Main Methods:

• A cross-sectional study was conducted on randomly selected black Malawian subjects.
• Key dermatoglyphic parameters measured included total finger ridge count (TFRC), atd angle, a-b ridge counts, and pattern intensity index (PII).

Main Results:

• Arches were the most common digital pattern; radial loops predominated in males and whorls in females, though not statistically significant.
• Females exhibited higher TFRC and atd angles, while males had higher pattern intensity index (PII) and a-b ridge counts.
• Malawians showed significantly lower TFRC, atd angle, and a-b ridge counts compared to Nigerians, with a lower mean PII.

Conclusions:

• This study provides the first baseline data on dermatoglyphic patterns for Malawians.
• The findings highlight population-specific variations and potential sex-based differences in dermatoglyphic traits within Malawi.