Aged 1 Aged, 80 and over 1 Anisotropy 1 Article 1 Bone 1 Compression strength 1 Compressive Strength 1 Compressive strength 1 Computerized tomography 1 Cortical Bone 1 Cortical bone tissues 1 Female 1 Femur 1 Humans 1 In-vivo measurement 1 Linear regression models 1 Male 1 Mechanical qualities 1 Mechanical testing 1 Microcomputed tomography 1 Porosity 1 Regression analysis 1 Resonant Ultrasound Spectroscopy 1 Resonant ultrasound spectroscopy Shear 1 Shear flow 1 Strength 1 Strength values 1 Tibia 1 Ultrasonic Waves 1