Sexual assault of child, hymen is not ruptured due to -
Ref: Synopsis of forensic medicine and toxicology (K.S.Narayan Reddy) 28th edition, page no.225 The hymen is deeply situated, and as the vagina is very small, it is impossible for penetration of adult organ to take place. Usually, the penis is placed either within the vulva or between the thighs. As such, the hymen is usually intact, and there may be little redness and tendernes of the vulva.
Deep seated
Underdeveloped
Too tough to rupture
Distensible
Sexual offences and infanticide