Human proximal femur bone adaptation to variations in hip geometry.
作者： M.M. Machado , P.R. Fernandes , V. Zymbal , F. Baptista
DOI: 10.1016/J.BONE.2014.07.001
关键词:
摘要: The study of bone mass distribution at proximal femur may contribute to understand the role hip geometry on fracture risk. We examined how mineral density (BMD) adapts inter individual variations in femoral neck length (FNL), width (FNW) and shaft angle (NSA). A parameterized dimensionally scalable 3-D finite element model a reference was incrementally adjusted adopt physiological ranges FNL (3.90-6.90cm), FNW (2.90-3.46cm), NSA (109-141o), yielding set femora with different geometries. for each obtained suitable remodelling model. BMDs integral (FN) intertrochanteric (ITR) region, as well BMD ratio inferomedial superolateral (IM:SL) regions FN FN:ITR were used represent distribution. Results revealed that longer FNLs present greater (g/cm(3)) FN, mainly SL ITR region. Wider FNs associated reduced particularly Larger NSAs up 129° diminutions increases IM:SL while larger than resulted decrease ratio. These findings suggest moderator mechanical loading influence higher favoring having opposite effect. Augmented values seem also favor more
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