Karakaş Hakki Muammer, Harma Ahmet
Department of Radiology, Inönü University School of Medicine, Malatya, Turkey.
Diagn Interv Radiol. 2008 Mar;14(1):29-32.
To determine the dimensions of the femoral shaft and their relationship to age in Anatolian Caucasian men and women.
Maximum femoral length (MFL), mid-shaft transverse diameter (MTD), and anterior bowing (AB) were studied in a sample of 104 adults. The linear dimensions and AB of the femoral shafts were measured on digital images.
In males, mean MFL, MTD, and AB were 448.2 mm, 26.5 mm, and 759.3 mm, respectively. In females these measurements were 419.0 mm, 25.6 mm, and 779.5 mm. Males had longer MFL (P < 0.0001) and there was no difference between males and females regarding the other parameters. MFL and age were correlated in females (r = -0.374, P < 0.005), whereas they were not correlated in males. In females, MFL decreased until about 45 years of age and stabilized thereafter. MTD was correlated with age in males (r = 0.428, P < 0.002), increasing from adolescence to maturity. This correlation was insignificant in females and there was only a slight increase in diameter after about 30 years of age. AB and age were significantly correlated in females (r = -0.401, P < 0.003), with AB continuously increasing with age. The correlation between AB and age was insignificant in males.
The increase in bone cross-sectional area in aging males may contribute to the maintenance of adequate mechanical competence throughout adulthood. In females this compensatory mechanism appears to be much less efficient and, accordingly, the end result of this process is AB of the femur and inevitable shortening of the bone.
确定安纳托利亚高加索男性和女性股骨干的尺寸及其与年龄的关系。
对104名成年人的样本进行最大股骨长度（MFL）、骨干中段横径（MTD）和前弓（AB）的研究。在数字图像上测量股骨干的线性尺寸和AB。
男性的平均MFL、MTD和AB分别为448.2毫米、26.5毫米和759.3毫米。女性的这些测量值分别为419.0毫米、25.6毫米和779.5毫米。男性的MFL更长（P < 0.0001），而在其他参数方面，男性和女性之间没有差异。女性的MFL与年龄相关（r = -0.374，P < 0.005），而男性则不相关。在女性中，MFL在约45岁之前下降，此后稳定。男性的MTD与年龄相关（r = 0.428，P < 0.002），从青春期到成年期逐渐增加。这种相关性在女性中不显著，且在约30岁之后直径仅略有增加。女性的AB与年龄显著相关（r = -0.401，P < 0.003），AB随年龄持续增加。男性中AB与年龄的相关性不显著。
老年男性骨横截面积的增加可能有助于在整个成年期维持足够的机械能力。在女性中，这种补偿机制似乎效率低得多，因此，这个过程的最终结果是股骨前弓和骨骼不可避免的缩短。
