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Application of ischium‐pubis index for sex determination using ihree‐dimensional models (919.13)
Author(s) -
Kim DongHo,
Jung GoUn,
Kim YiSuk,
Lee UYoung
Publication year - 2014
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.28.1_supplement.919.13
Subject(s) - ischium , pubic symphysis , acetabulum , ischial tuberosity , pelvis , anatomy , medicine
For sex estimation with the pelvis, ischium‐pubis index is commonly chosen along the greater sciatic notch. This index is the percentage value of the pubic length divided by the ischium length and known that female has greater value than male. The pubic length is a distance from the upper edge of the pubic symphysis to the acetabulum, and the ischium length is the distance from the most distinct point on the ischial tuberosity to the acetabulum. The point in the acetabulum is customarily marked on the point where the three parts of the pubic bone meet, however, due to irregular shape of the acetabulum; there is possibility to be marked differently due to observer. Thus, we studied a landmark which is more objectively to be marked and ischium‐pubis index applicable to Korean population. We studied 103 sides (52 female and 51 male) of the Digital Korean Database stored in the Catholic Institute for Applied Anatomy. Landmarks chosen near the acetabulum to measure the pubis length and ischium length were those: the point where the pubis, the ilium and the ischium meet, the deepest point of the acetabulum, and a point on the acetabular border. Mimics (ver. 15, Materialise, Belgium) was used to enable three‐dimensional measurement by a template programmed for this study. There were nine measurement items related to the distance and angle between each point. Discriminant analysis for sex determination was done by SPSS (ver. 20.0, IBM, USA). The method using the deepest point of the acetabulum showed the highest accuracy of sex estimation compared to the traditional method using the contacting point of the three innomiates and another method of upper border of the acetabulum. Therefore, we suggest through this study that utilising the deepest point of the acetabulum is suitable for calculating the ischium‐pubis index. For this study, mean the ischium‐pubis index of male was 98 and of female was 114, and the demarking point of both sexes was 106. Grant Funding Source : Supported by Basic Science Research Program through the National Research Foundation of Korea (NRF)