The effects of body mass index and age on cross‐sectional properties of the femoral neck

摘要: Research on the relationship between body mass index (BMI) and cross-sectional geometry of long bone diaphyses demonstrates that strength properties are significantly greater in obese versus normal BMI individuals. However, articular dimensions do not differ appreciably. If femoral head size remains constant, we hypothesize neck remodels to accommodate loads associated with increased BMI. High-resolution CT scans (n = 170 males) were divided into three groups (normal, overweight, obese) two age (21-50 >50). OsiriX software was used obtain a slice at waist neck. Cortical area (CA), total (TA), percent cortical (%CA), circularity (Imax /Imin ), section modulus (Zpol second moment (J) measured ImageJ software. The effects evaluated statistically. Pairwise comparisons younger group only detected significant differences males (P = 0.022). older cohort showed CA (P < 0.001), %CA (P = 0.004), Zpol (P = 0.007), J (P < 0.001) groups. This study shows obesity more pronounced relative males. Older have males, thus making less susceptible fractures