Research supported by United States Public Health Service grant HD-AM 02771-01, 02, National Institute of Child Health and Human Development.
Roentgenographic and direct measurement of femoral cortical involution in a prehistoric Mississippian population†
Article first published online: 2 MAY 2005
Copyright © 1969 Wiley-Liss, Inc., A Wiley Company
American Journal of Physical Anthropology
Volume 31, Issue 1, pages 23–38, July 1969
How to Cite
van Gerven, D. P., Armelagos, G. J. and Bartley, M. H. (1969), Roentgenographic and direct measurement of femoral cortical involution in a prehistoric Mississippian population. Am. J. Phys. Anthropol., 31: 23–38. doi: 10.1002/ajpa.1330310105
- Issue published online: 2 MAY 2005
- Article first published online: 2 MAY 2005
Recent roentgenographic studies suggest that periosteal apposition adds femoral cortical bone faster than it is lost by endosteal involution, so that cortical bone area increases with age. A comparison was made of direct and roentgenographic measurements of femoral cortical bone using femora from 23 females and 20 males of a prehistoric Mississippian population dated at A.D. 1540–1700. The comparison revealed that significant errors existed in the technique of radiographic measurement (p<0.000001), in estimating male and female cortical thickness (p<0.000001), and the changes in thickness with age (p<0.000001). There was no significant interaction of the variables: age, sex, and method.
The errors arose partly from the inability of the roentgenograph to reveal clearly endosteal porosity, and partly in the assumption that the medial and lateral cortical wall thickness would be representative of the mean cortical thickness.
The reduction in cortical thickness (11.3% males and 29.3% females) with age as measured directly is comparable with loss in modern populations.