Investigations of the relation between birth trauma and pelvic size in females from a medieval gravesite from Lübeck.

Abstract

This study proposes that female pelvises showing no birth traumata may have had ideal child-bearing bone constitutions, differing significantly in size and shape from those with severe traumata, resulting in advantages during parturition. Based on this assumption, the female pelvises of a late medieval mass grave from Lübeck have been examined in terms of pelvic osteometric standards in obstetrics, morphological aspects, the degree of birth trauma lesions, and the possible effect of age at death on trauma mark severity. The results imply much wider pelvises (up to 1 cm) in the historical population and a shift in pelvic shape appearances from gynaecoid and platypelloid forms toward android and anthropoid shapes, compared with modern European populations. Furthermore, a significant relation between the appearances of lesions and the age at death was found, while the relations between pelvic size and shape and birth trauma appearances is not significant in this historical skeletal series.