Hip Fractures and the Contribution of Cortical Versus Trabecular Bone to Femoral Neck Strength

• DOI: 10.1359/jbmr.081108
• Publication Date: 2008-11-18T14:32:29Z
• Authors: Gerold Holzer; Gobert von Skrbensky; Lukas A Holzer; Wolfgang Pichl
• Keywords: Biomechanics

Osteoporotic fractures are caused by both cortical thinning and trabecular bone loss. Both seen to be important for fragility. The relative contributions of versus have not been established. aim this study was test the contribution femoral neck stability in strength. In one femur from each pair 18 human cadaver femurs (5 female; 4 male), completely removed neck, providing with intact other without any structure neck. Geometrical, X-ray, DXA measurements were carried out before biomechanical testing (forces fracture). Femoral necks osteotomized, slices analyzed cross-sectional area (CSA) moment inertia (CSMI), results compared data. Differences between forces needed fracture excavated (DeltaF/F mean) 7.0% on average (range, 4.6-17.3%). CSA spongiosa did correlate difference load mean), nor BMD. respect strength seems marginal explain subordinate role its changes risk effects treatment options preventing fractures.