Sex‐specific functional adaptation of the femoral diaphysis to body composition

Bibliographic Data

ID19459005
AuthorsAlizé Lacoste Jeanson (0000-0002-2909-9505, Department of Anthropology and Human Genetics, Faculty of Natural Sciences Charles University – Viničná 7 128 43 Prague 2 Czech Republic, corresponding author), Frédéric Santos (0000-0003-1445-3871, PACEA, UMR 5199, CNRS, Université de Bordeaux – Bâtiment B8, Allée Geoffroy Saint Hilaire, CS 50023 F‐33 400 Talence France), Ján Dupej (0000-0002-8808-7977, Department of Anthropology and Human Genetics, Faculty of Natural Sciences Charles University – Viničná 7 128 43 Prague 2 Czech Republic), Jana Velemínská (0000-0002-5213-951X, Department of Anthropology and Human Genetics, Faculty of Natural Sciences Charles University – Viničná 7 128 43 Prague 2 Czech Republic), Jaroslav Brůžek (0000-0002-2478-9662, Department of Anthropology and Human Genetics, Faculty of Natural Sciences Charles University – Viničná 7 128 43 Prague 2 Czech Republic)
Year2018
Volume30
Issue4
Pagese23123-e23123
Publication date2018-07-01
Peer ReviewedYes
Open AccessYes
TypeARTICLE
VenueAmerican Journal of Human Biology (JOURNAL)
Journal identifiersISSN: 1042-0533 • E-ISSN: 1520-6300
PublisherWiley (PUBLISHER • GB)
DOI10.1002/ajhb.23123
PMID29575561
OpenAlexW2791039364
LanguageEN
Citations received5
References cited58

OBJECTIVES: The human femoral diaphysis is often used to reconstruct loading histories (mobility, activity, body mass). The proximal femur is known to be differentially affected by changes in total fat-mass (FM), fat-free mass (FFM), and body fat percentage (BF%), but the adaptation of the entire diaphysis to body composition has not been thoroughly characterized to date. Understanding how the femoral diaphysis adapts to body components would benefit biomechanical interpretations of the femoral variation and nutrition-related studies. METHODS: Combining various methods from clinical nutrition, biological anthropology, and geometric morphometrics, we evaluated the correlation of measures taken on the entire femoral diaphysis with estimated FM, FFM, and BF% from 61 CT scans (17 females, 44 males). The sample was predominantly composed of people with obesity. RESULTS: Cortical area of the cross-sections and local cortical thickness showed high correlation with BF% in particular, in females only. The curvature significantly decreased with FM and BF% in both sexes. The lowest correlations are found with FFM. CONCLUSIONS: The observed sexual dimorphism is consistent with differing aging processes; cortical bone decreases in females through endosteal resorption while it remains almost constant in males who compensate for endosteal resorption by periosteal apposition on the diaphyseal surface. The functional adaptation to compressive forces indicates a systemic endosteal apposition of bone material with increased BF% and FM in females only. FM and BF% are linked to a straighter femur in both sexes, suggesting an optimization of the resistance to compressive loads by distributing them more linearly along the entire diaphysis

Apposition · Biology · Body weight · Bone mass · Cortical bone · Diaphysis · Fat mass · Femur · Lean body mass · Obesity · Osteoporosis · Resorption · Sexual dimorphism · Bone health and osteoporosis research · Forensic Anthropology and Bioarchaeology Studies · Hip disorders and treatments · Medicine · Anatomy · Endocrinology · Surgery

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