| Autor: |
Armelagos, George J., Mielke, James H., Owen, Kipling H., Van Gerven, Dennis P., Dewey, John R., Mahler, Paul Emil |
| Zdroj: |
Journal of Human Evolution; January 1972, Vol. 1 Issue: 1 p89,IN10,11-118,IN11,1, 112p |
| Abstrakt: |
The analysis of a large sample of skeletons from a number of Sudanese Nubian cemeteries demonstrates the usefulness of this material in the study of bone growth and development. A skeletal series from the Meroitic (B.C. 350-A.D. 350), X-Group (A.D. 350–550), and Christian (A.D. 550–1400) period were utilized in determining the rate of bone development and age related changes in the internal structure of the femur. Specifically, we have been able to demonstrate the following: 1.(i) The growth velocity determined from the long bones in the Nubian sample was similar but somewhat more irregular than the growth velocity of long bones in American boys studied longitudinally.2.(2) Growth symmetry of long bones determined by the ratio of lengths shows a greater stability than that which occurs in American boys.3.(3) Decrease in femoral cortical thickness with age was significant in Nubian females (P< 0·001), while the decrease in males was not significant. The loss of cortical bone tissue in Nubian females appears to begin earlier than similar changes in modern females.4.(4) The density of femoral head trabecular bone organ volume decreases with age at similar rates in both males and females, but the females lose a larger percentage of density since they enter the age period (17 years) with a lower density.5.(5) The average thickness of femoral head trabeculae decrease with age in males, while in females there is an increase in thickness. It appears that as cross-members decrease in thickness with age, struts increase in thickness.6.(6) Microradiographic analysis of archeological material may provide an additional dimension to the study of bone turnover rates. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
