Reliability of palmar flexion crease identification
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Authors
Grijalva, Delania A.
Issue Date
2006
Type
Thesis
Language
en
Keywords
Forensic sciences
Alternative Title
Abstract
Palmar flexion creases are a suitable method of forensic identification due to their properties of uniqueness and persistency. Ashbaugh (1991) compared twin palm prints and found that major flexion crease configurations were found to be similar more often than minor or secondary crease configurations. In a comparison test of palm prints of unrelated individuals, the percentage of similar major creases decreased. Thus, as the genetic relationship of individuals moves farther apart, the influence of heredity on crease path of major creases and minor finger creases decreases. Minor and secondary creases always differentiated between palms with similar major crease paths. Upon comparison of palm prints taken from the same individuals at different times, all flexion creases were found in agreement. Based on the results of both comparison tests, minor and secondary creases are unique and persistent enough to individualize. Furthermore, flexion creases can be used together with fingerprints to identify individuals.