title: Textural characteristics of the iliac-femoral trabecular pattern in a bipedally trained Japanese macaque.
abstract: Previous research has revealed that Japanese macaques (Macaca fuscata) trained in bipedal performance (Saru-mawashi) display a number of functionally related external skeletal changes, as well as some site-specific endostructural cortical and cancellous adaptations. Through radiography assisted by digital image processing, we investigated the trabecular pattern of the ilium and femoral neck of Sansuke, a macaque habitually bipedally trained for 8 years. A set of eight regions of interest on Sansuke were recorded for subtle structural characterization of the cancellous network and compared to a sample of 5 ilia and 23 femurs from 26 adult wild Japanese macaques. The measured variables include trabecular thickness, trabecular bone volume, and degree of anisotropy. As a whole, the site-specific textural characteristics of the cancellous network detected on the ilium and proximal femur of the bipedally trained macaque can be interpreted as functional adaptive responses to more compressive loads dissipated along the axis from the sacro-iliac to the coxo-femoral joint, and back.
authors.affiliation: Laboratoire de Planétologie et Géodynamique, UMR CNRS 6112, Université de Nantes, 2 rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France. virginie.volpato@univ-nantes.fr
authors.forename: Virginie
authors.initials: V
authors.lastname: Volpato
authors.forename: Thomas B
authors.initials: TB
authors.lastname: Viola
authors.forename: Masato
authors.initials: M
authors.lastname: Nakatsukasa
authors.forename: Luca
authors.initials: L
authors.lastname: Bondioli
authors.forename: Roberto
authors.initials: R
authors.lastname: Macchiarelli
mesh_terms: D000367:Age Factors; D000818:Animals; D016880:Anisotropy; D001857:Bone Matrix / Q000000981:diagnostic imaging; D005269:Femur / Q000000981:diagnostic imaging*; D007085:Ilium / Q000000981:diagnostic imaging*; D007091:Image Processing, Computer-Assisted; D008251:Macaca / Q000033:anatomy & histology*; D011859:Radiography; D016138:Walking