Kameyama T, Hashizume Y, Ando T, Takahashi A
Department of Neurology, Nagoya University School of Medicine.
Rinsho Shinkeigaku. 1992 Nov;32(11):1203-7.
We measured the cross-sectional area and diameters of the C7 segment in 80 cadaveric specimens obtained from patients without spinal cord lesions died at 60 to 79 years of age. We found considerable individual variation in the spinal cord size. The transverse area of the C7 segment varied from 33.3 mm2 to 67.7 mm2 (mean 48.4 +/- 6.9 mm2). The size of the cord had no correlation with body weight, and had some correlation with body height. But the individual variation in the cord size was considerably large even among the cases of the same height. This large variation in the cord size should be under consideration in morphometric analysis of the spinal cord. We showed the morphometric data based on the measurements of the cross-sectional area and diameters in each segment from C2 to Th1 in 14 cases. Although the size of the spinal cord varied markedly from case to case, the relative ratio of cross-sectional area in each segment to that of C3 was similar among the cases (C2; 1.01 +/- 0.04, C4; 1.02 +/- 0.03, C5; 1.09 +/- 0.04, C6; 1.09 +/- 0.06, C7; 1.07 +/- 0.06, C8; 0.98 +/- 0.05. Th1; 0.80 +/- 0.04). Based on our data, the proper cross-sectional area of each segment and of each individual may be calculable from measurement of a given single segment.
我们测量了80例60至79岁无脊髓损伤患者死亡后获取的尸体标本中C7节段的横截面积和直径。我们发现脊髓大小存在相当大的个体差异。C7节段的横截面积在33.3平方毫米至67.7平方毫米之间变化（平均48.4±6.9平方毫米）。脊髓大小与体重无相关性，与身高有一定相关性。但即使在身高相同的病例中，脊髓大小的个体差异也相当大。在脊髓形态测量分析中应考虑到这种脊髓大小的巨大差异。我们展示了14例从C2到Th1各节段横截面积和直径测量的形态测量数据。尽管不同病例之间脊髓大小差异显著，但各节段横截面积与C3横截面积的相对比值在病例之间相似（C2；1.01±0.04，C4；1.02±0.03，C5；1.09±0.04，C6；1.09±0.06，C7；1.07±0.06，C8；0.98±0.05，Th1；0.80±0.04）。根据我们的数据，通过测量给定的单个节段，可能计算出每个节段以及每个个体的合适横截面积。
