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Methods and theory in bone modeling drift: comparing spatial analyses of primary bone distributions in the human
Corey M Maggiano1,2, Isabel S Maggiano1,3, Vera G Tiesler4
1Department of Anthropology, University of West Georgia, Carrollton, GA, USA.
Journal of Anatomy
|October 17, 2015
Summary
Two new methods quantify bone tissue distribution, revealing significant posteromedial drift and rotation in human humerus growth. This aids anthropological and anatomical research into bone modeling and microstructural variation.
Area of Science:
- Paleoanthropology
- Human Anatomy
- Skeletal Biology
Background:
- Bone microstructural variation reflects developmental and adaptive processes.
- Understanding bone modeling is crucial for interpreting growth, health, and activity.
- Quantitative methods for analyzing bone modeling drift are limited.
Purpose of the Study:
- To compare two novel methods for quantifying bone shaft tissue distributions.
- To analyze human humeral growth patterns using these new techniques.
- To investigate the role of bone modeling drift in microstructural variation.
Main Methods:
- Starburst point-count method for bone tissue analysis.
- 45° cross-polarization hand-drawn histomorphometry.
- Analysis of pooled archaeological and modern human skeletal samples.
Main Results:
- Both novel methods provide similar, statistically robust results.
- Extreme asymmetry in bone modeling significantly influences diaphyseal microstructural variation.
- The human humerus exhibits significant posteromedial drift and rotational trends.
Conclusions:
- The proposed methods enable quantitative analysis of bone modeling drift.
- Endocortical primary bone distributions serve as reliable indicators of bone modeling.
- Findings advance anthropological and anatomical research on skeletal growth and adaptation.
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