Pelvic floor
The idea that riding a horse astride could injure a woman's sex organs is a historic, but sometimes popular even today, misunderstanding or misconception, particularly that riding astride can damage the hymen. Evidence of injury to any female sex organs is scant. In female high-level athletes, trauma to the perineum is rare and is associated with certain sports (see Pelvic floor#Clinical significance). The type of trauma associated with equestrian sports has been termed "horse riders' perineum". A case series of 4 female mountain bike riders and 2 female horse riders found both patient-reported perineal pain and evidence of sub-clinical changes in the clitoris; the relevance of these findings to horse riding is unknown.