The nulliparous female may have scarring, the multiparous female may have none, and males also can exhibit pelvic scarring. Thus, the hypothesis that fertility can be determined by skeletal pelvic analysis is rejected. The results of this study show that pelvic flexibility and sex are significantly associated with pelvic scarring. Females have a significantly greater range of motion, rotation of the sacrum and expansion of the pelvic articulations, than do males. Tightly articulated pelvic girdles show significantly less scarring than the more loosely articulated pelves.
Males have tighter pelves and show less scarring than females.
Relaxation or stretching of the supporting soft tissue may allow excessive movement for pelvic articulation not tightly maintained by bone. It is determined that sex and flexibility of the bony pelvis are most important in pelvic scarring and that parity is not a significant factor.