Details

Autor(en) / Beteiligte

• Flander, Louisa Beyer
• Corruccini, Robert S.

Titel

Shape differences in the sacral alae

Ist Teil von

• American journal of physical anthropology, 1980-03, Vol.52 (3), p.399-403

Ort / Verlag

New York: Wiley Subscription Services, Inc., A Wiley Company

Erscheinungsjahr

1980

Quelle

Wiley-Blackwell Full Collection

Beschreibungen/Notizen

• The great variability and complexity of sacral morphology has led to some confusion over the separate influences of phylogeny, population differences, and sexual dimorphism. Principal component analysis of Cartesian coordinates taken on the alae of one hundred human sacra reveals that allometric growth accounts for most variation in the extent and orientation of this region (termed basality). Sex differences related to functional contribution of the alae to the pelvic cavity account for the remainder of the variability. The requirement for extrastability in this region to support the large individual may obscure sexual dimorphism in the sacrum. This, in turn, may have influenced past observations on the sex criteria for this bone.