Ferrario V F, Sforza C, Randelli F, Miani A, Pizzini G
Functional Anatomy Research Center (FARC), LAFAS, Facoltà di Medicina e Chirurgia, Università degli Studi, Milano, Italy.
Ital J Anat Embryol. 1998 Apr-Jun;103(2):95-105.
Morphology (both size and shape) of paired structures differ in the left and right sides of body. Size and shape characteristics should be analyzed separately to supply information about the normal variations of human organs. In the present study, the within-subject size and shape asymmetries of normal human femur were analyzed from a mathematical standpoint. On the standardized frontal computerized tomographic scout views of both thighs of 14 healthy adults (7 women and 7 men aged 22-26 years), the outline of the femur was identified, and its size and shape were separately quantified. The left and right femur of each subject were compared, and size and shape asymmetry separately quantified on an intra-subject basis. Subjects were also grouped for sex, and mean values computed. Within-subject symmetry in femoral size and shape was high, with coefficients of superimposition ranging between 91% and 96.5%. In women, a slightly higher symmetry (up to 99.9%) was observed when the femoral outlines were standardize for size. Moreover, in the same group the asymmetry in the form of femoral outline seemed to be partly related to the asymmetry in femoral length. Conversely, no similar relations were found in men.
成对结构的形态（包括大小和形状）在身体的左右两侧存在差异。大小和形状特征应分别进行分析，以提供有关人体器官正常变异的信息。在本研究中，从数学角度分析了正常人类股骨的个体内大小和形状不对称性。在14名健康成年人（7名女性和7名男性，年龄在22 - 26岁之间）双侧大腿的标准化正位计算机断层扫描定位像上，确定股骨轮廓，并分别对其大小和形状进行量化。比较每个受试者的左右股骨，并在个体内基础上分别量化大小和形状不对称性。受试者还按性别分组，并计算平均值。股骨大小和形状的个体内对称性较高，叠加系数在91%至96.5%之间。在女性中，当股骨轮廓按大小标准化时，观察到稍高的对称性（高达99.9%）。此外，在同一组中，股骨轮廓形式的不对称似乎部分与股骨长度的不对称有关。相反，在男性中未发现类似关系。
