An ontogenetic framework linking locomotion and trabecular bone architecture with applications for reconstructing hominin life history

Journal of Human Evolution
David A RaichlenTimothy M Ryan

Abstract

The ontogeny of bipedal walking is considered uniquely challenging, due in part to the balance requirements of single limb support. Thus, locomotor development in humans and our bipedal ancestors may track developmental milestones including the maturation of the neuromuscular control system. Here, we examined the ontogeny of locomotor mechanics in children aged 1-8, and bone growth and development in an age-matched skeletal sample to identify bony markers of locomotor development. We show that step-to-step variation in mediolateral tibia angle relative to the vertical decreases with age, an indication that older children increase stability. Analyses of trabecular bone architecture in the distal tibia of an age-matched skeletal sample (the Norris Farms #36 archaeological skeletal collection) show a bony signal of this shift in locomotor stability. Using a grid of eleven cubic volumes of interest (VOI) in the distal metaphysis of each tibia, we show that the degree of anisotropy (DA) of trabecular struts changes with age. Intra-individual variation in DA across these VOIs is generally high at young ages, likely reflecting variation in loading due to kinematic instability. With increasing age, mean DA converges on higher values an...Continue Reading

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Citations

Nov 6, 2015·American Journal of Physical Anthropology·Jason A Nadell, Colin N Shaw
Mar 19, 2016·Journal of Human Evolution·Shannon C McFarlinTimothy G Bromage
Jul 28, 2016·Journal of Human Evolution·Jaap P P SaersTimothy M Ryan
Jan 12, 2017·American Journal of Physical Anthropology·Abigail C Nishimura, Gabrielle A Russo
May 26, 2017·American Journal of Physical Anthropology·Zewdi J TsegaiTracy L Kivell
Mar 25, 2018·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Susan Coiner-CollierRobert S Scott
Oct 23, 2017·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Bernadette PerchalskiTimothy M Ryan
Aug 31, 2018·American Journal of Physical Anthropology·Zewdi J TsegaiTracy L Kivell
Apr 12, 2020·American Journal of Physical Anthropology·Bram MulderJohn E Robb
Jul 14, 2018·PeerJ·Leoni GeorgiouMatthew M Skinner
Jul 14, 2020·American Journal of Physical Anthropology·Karen R SwanLouise T Humphrey
Jun 9, 2020·Frontiers in Bioengineering and Biotechnology·Arthur Henri DewolfYury Ivanenko
Mar 5, 2020·The Journal of Experimental Biology·Claire E TerhuneMatthew J Ravosa
Dec 15, 2018·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Simone SukhdeoTimothy M Ryan
May 1, 2018·Journal of Human Evolution·Timothy M RyanJay T Stock
Jun 12, 2019·Journal of Human Evolution·Klara Komza, Matthew M Skinner
Sep 10, 2019·Journal of Human Evolution·Marine CazenaveRoberto Macchiarelli

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