The 89th Annual Meeting of the American Association of Physical Anthropologists (2020)


Exploring age related changes in cortical bone in indiviudals over 50 using radiographs

JACOB M. COOK M.A. and NICHOLAS P. HERRMANN PHD.

Anthropology, Texas State University

April 16, 2020 , Platinum Ballroom Add to calendar

Accurate age estimation is an important tool in both reducing the candidate pool for individual identification and for reconstructing the demographic parameters of past populations. In this study, we explored the relationship between the bone volume ratio (MV:BV) using linear measures of medullary cavity breadth and cortical bone thickness at three areas of the femoral shaft as a proxy for age. In addition, we document changes in shaft shape with age using a Generalized Procrustes Analysis (GPA). Digital radiographs of 164 non-pathological left femora from the Texas State University Donated Skeletal Collection (TXSTDSC) were taken and analyzed. The results of this study indicate that the overall MV:BV is moderately correlated with age (r=0.38) and that this relationship is stronger in females (r=0.49) versus males (r=0.28). The GPA revealed that there is site specific bone remodeling with consistent rates of cortical bone loss throughout the aging process with slightly different patterns for males and females . The most significant changes in shape are along the anterior and posterior sides of the bone at midshaft. These results reinforce previous findings that cortical bone thinning is correlated with age and that there are areas of the femur that are more affected by this process than others. The findings of this study have the potential to be applied in both forensic and bioarchaeological settings for individual identification and paleodemographic reconstructions, respectively.


Slides/Poster (pdf)