This article was published online on 10 December 2013. An error was subsequently identified. This notice is included in the online and print versions to indicate that both have been corrected 15 April 2014.
Trabecular bone structure in the primate wrist
Article first published online: 10 DEC 2013
Copyright © 2013 Wiley Periodicals, Inc.
Journal of Morphology
Volume 275, Issue 5, pages 572–585, May 2014
How to Cite
Schilling, A.-M., Tofanelli, S., Hublin, J.-J. and Kivell, T. L. (2014), Trabecular bone structure in the primate wrist. J. Morphol., 275: 572–585. doi: 10.1002/jmor.20238
- Issue published online: 10 APR 2014
- Article first published online: 10 DEC 2013
- Manuscript Accepted: 1 NOV 2013
- Manuscript Revised: 28 OCT 2013
- Manuscript Received: 22 MAY 2013
- Max Planck Society
- cancellous bone;
- functional morphology;
Trabecular (or cancellous) bone has been shown to respond to mechanical loading throughout ontogeny and thus can provide unique insight into skeletal function and locomotion in comparative studies of living and fossil mammalian morphology. Trabecular bone of the hand may be particularly functionally informative because the hand has more direct contact with the substrate compared with the remainder of the forelimb during locomotion in quadrupedal mammals. This study investigates the trabecular structure within the wrist across a sample of haplorhine primates that vary in locomotor behaviour (and thus hand use) and body size. High-resolution microtomographic scans were collected of the lunate, scaphoid, and capitate in 41 individuals and eight genera (Homo, Gorilla, Pan, Papio, Pongo, Symphalangus, Hylobates, and Ateles). We predicted that particular trabecular parameters would 1) vary across suspensory, quadrupedal, and bipedal primates based on differences in hand use and load, and 2) scale with carpal size following similar allometric patterns found previously in other skeletal elements across a larger sample of mammals and primates. Analyses of variance (trabecular parameters analysed separately) and principal component analyses (trabecular parameters analysed together) revealed no clear functional signal in the trabecular structure of any of the three wrist bones. Instead, there was a large degree of variation within suspensory and quadrupedal locomotor groups, as well as high intrageneric variation within some taxa, particularly Pongo and Gorilla. However, as predicted, Homo sapiens, which rarely use their hands for locomotion and weight support, were unique in showing lower relative bone volume (BV/TV) compared with all other taxa. Furthermore, parameters used to quantify trabecular structure within the wrist scale with size generally following similar allometric patterns found in trabeculae of other mammalian skeletal elements. We discuss the challenges associated with quantifying and interpreting trabecular bone within the wrist. J. Morphol. 275:572–585, 2014. © 2013 Wiley Periodicals, Inc.