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Title: Bone Geometric Properties of the Femoral Neck in Underweight Eumenorrheic Women
Authors: Al Rassy, Nathalie
Matta, Joseph
Frenn, Fabienne
Maalouf, Ghassan
Rizkallah, Maroun
Bachour, Falah
Sebaaly, Amer
Hardouin , Pierre
Chauveau, Christophe
Hage, Rawad El 
Affiliations: Department of Physical Education 
Keywords: Bone geometry
Low body weight
Peak bone mass
Issue Date: 2019
Part of: Journal of clinical densitometry
Volume: 22
Issue: 2
Start page: 272
End page: 278
The aim of this study was to describe femoral neck (FN) geometry among eumenorrheic underweight women around the age of peak bone mass. Proximal femur geometry and body composition were assessed in 12 underweight women and in 24 healthy controls using dual-energy X-ray absorptiometry. The Hip Structural Analysis program was used to determine bone geometry at the FN. The cross-sectional area (CSA) and the cross-sectional moment of inertia (CSMI) were significantly lower in underweight women than in controls (p < 0.05). There was a trend toward lower sectional modulus (Z) and strength index in underweight women (p < 0.15). Body weight, body mass index, and lean mass (LM) were positively correlated with CSA, CSMI, Z, and neck-shaft angle (r = 0.428–0.611, p < 0.05). After controlling for body weight, body mass index, and LM, the differences in CSA, CSMI, Z, and neck-shaft angle were no more statistically significant between the 2 groups. The multivariate analysis retained LM as the main predictor of CSA, CSMI, and Z in the whole population. The present study suggests that thinness is associated with low resistance to axial forces (CSA) and bending load (Z and CSMI) in adult eumenorrheic women. LM seems to be a key determinant of FN geometry in underweight women.
Ezproxy URL: Link to full text
Type: Journal Article
Appears in Collections:Department of Physical Education

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