Anogenital distance and anal position index in cadaveric human fetuses

Taşkınlar, Hakan | Elvan, Özlem | İsbir, Caner | Kıllı, İsa | Naycı, Ali

The aim of this study is to contribute to the determination of the normal values of human anogenital distance (AGD) and anal position index (API) in the antenatal period. 59 formalin-fixed human fetuses were examined. AGD was measured by the distance between the center of the anus and the posterior fourchette in females, and the distance between the center of the anus and the posterior scrotal raphe in males. API in female fetuses was determined with the formula API = fourchette-center of anus/fourchette-coccyx formula, and API = posterior scrotal raphe-center of anus/posterior scrotal raphe-coccyx in males. The mean AGDs of the female and male fetuses in the second trimester were 5.60 ± 1.60 mm and 9.64 ± 2.75 mm and 12.88 ± 4.14 mm and 17.26 ± 5.55 mm in the third trimester, respectively...