Angel Zeininger- Trabecular Bone Research

Juvenile Foot Bones
I investigated trabecular bone remodeling in the foot bones of juvenile and adult humans, African apes (chimpanzees, bonobos, and gorillas). In particular, I am interested in how evidence of the absence/presence of heel-strike and a propulsive hallucal toe-off is preserved in the talus, calcaneus, first metatarsal head, and hallucal distal phalanx.

Metacarpal Head Biomechanics
In collaboration with Brian Richmond and Gideon Hartman, I analyzed gray levels in backscattered electron images of trabecular bone within the third metacarpal head of humans, chimpanzees, and orangutans. We found that gray level patterns (representative of bone mineral density) differed between the three species in accordance with known variance in metacarpophalangeal joint loading. 

Digital Morphology

Using VG Studio Max, I created a 3D model of the Monodelphis domestica foot for the University of Texas at Austin's DigiMorph website.

Natal Line Remodeling
I studied remodeling of the hatcling line in Trachemys scripta elegans (red-eared sliders) via histological sections of hatchling and juvenile humeri. This project sought to answer two main questions: 1) does the hatchling (natal) line exist in turtles? and 2) if so, to what degree is it remodeled throughout ontogeny? The purpose of this study was to clarify a major concern in turtle ecology regarding the estimation of age using skeletochronology. This project was part of a larger study by Gideon Hartman.