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Ducher, G ; Courteix, D ; Meme, S ; Magni, C ; Viala, JF ; Benhamou, CL

Bone geometry in response to long-term tennis playing and its relationship with muscle volume : A quantitative magnetic resonance imaging study in tennis players

Bone 37 (4) 457-466

par Administrateur - publié le

Abstract :

The benefit of impact-loading activity for bone strength depends on whether the additional bone mineral content (BMC) accrued at loaded sites is due to an increased bone size, volumetric bone mineral density (vBMD) or both. Using magnetic resonance imaging (MRI) and dual energy X-ray absorptiometry (DXA), the airn of this study was to characterize the geometric changes of the dominant radius in response to long-term tennis playing and to assess the influence of muscle forces on bone tissue by investigating the muscle-bone relationship. Twenty tennis players (10 men and 10 women, mean age : 23.1 +/- 4.7 years, with 14.3 +/- 3.4 years of playing) were recruited. The total bone volume, cortical volume, sub-cortical volume and muscle volume were measured at both distal radii by MRI. BMC was assessed by DXA and was divided by the total bone volume to derive vBMD.