This work focuses on quantifying and comparing skeletal structures in primates and other mammals to address questions related to the functional significance of morphological variation. The approach we generally employ focuses on structural variation in cortical and trabecular bone in the postcranial skeleton of primates. This work has relevance not only for understanding the relationship between form and function in living species but also can be useful for reconstructing past behaviors in fossil hominins and nonhuman primates. Examples of recent work in this area include analysis of trabecular bone in the hip joint of extant and extinct hominoids, comparison of structural variation in the knee joint in relation to locomotor and positional behavior in catarrhine primates, and ongoing analyses of trabecular bone structural variation in canids and primates.      

Publications

2020

Sukhdeo, S., Parsons, J., Niu, X. M., Ryan, T.M. Trabecular bone structure in the distal femur of humans, apes, and baboons. Anatomical Record 303: 129-149.

2018

Ryan, T. M., Carlson, K. J., Gordon, A. D., Jablonski, N. G., Shaw, C. N., & Stock, J. T. Human-like bipedal gait in Australopithecus africanus and Paranthropus robustus. Journal of Human Evolution 121, 12-24.

2017

Frelat, M.A., Shaw, C.N., Sukhdeo, S., Hublin, J.J., Benazzi, S., Ryan, T. M. Evolution of the hominin ankle and knee. Journal of Human Evolution 108, 147-160.

2013

Ryan, T. M., & Shaw, C. N. Trabecular bone microstructure scales allometrically in the primate humerus and femur. Proceedings of the Royal Society B: Biological Sciences 280, 20130172.