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1.观察1600个成人颅骨,顶间骨出现率为2.94%,顶间骨的数目为1～3个,出现的顶间骨中27.69%的顶间骨与最上项线交叉,全部顶间骨在上项线上方。2.本文65块顶间骨横径为±S=5.18±2.08cm(XG±SG=4.80±1.48cm),纵径±S=4.28±0.86cm,周径±S=14.88±3.79 cm(XG±SG=14.48±1.25cm)。3.观察60个不同周龄胎颅枕鳞骨化过程,枕鳞上部为两个骨化中心,于胚胎第8周显现后以较快的速度进行膜内化骨。4.出现三个或三个以上异常骨化中心的枕鳞上部,可由顶间骨的数目及位置表现出来,为枕鳞上部骨化异常的反映,而不表明正常枕鳞上部的骨化过程。5.枕鳞上、下两部间的融合线位于上项线以上,上项线和最上项线均不应认作是枕鳞上、下两部的融合线,而是后天形成的肌肉附着线。
1. The observation of 1600 adult skull, the rate of the apical bone was 2.94%, the number of the apical bone was 1 to 3, and 27.69% of the apical bone in the apical bone was found to cross the top line. All the apical bone Above the line. The transverse diameter of 65 vertebrae was ± S = 5.18 ± 2.08cm (XG ± SG = 4.80 ± 1.48cm), the longitudinal diameter ± S was 4.28 ± 0.86cm, the circumference ± S was 14.88 ± 3.79 cm (XG ± SG = 14.48 ± 1.25 cm). 3. Observe 60 different age fetal cranial pillow scale ossification process, the upper part of the occipital scale for two ossification center, in the embryo after the first 8 weeks of rapid internalization of the membrane bone. 4. The presence of three or more abnormal ossicular center of the upper part of the occipital scale may be the number and location of the interproximal bone as a reflection of the upper occipital scale ossification abnormalities without indicating the normal ossification of the upper occipital scale . 5. Pillow scales, the next two lines between the fusion line is located above the line, the upper line and the line should not be considered as the top of the occipital scale, the next two lines of fusion, but the acquired form of muscle attachment line.