Silau A M, Fischer Hansen B, Kjaer I
Department of Orthodontics, School of Dentistry, Faculty of Health Sciences, University of Copenhagen, Denmark.
J Craniofac Genet Dev Biol. 1995 Apr-Jun;15(2):81-6.
This study describes the prenatal human parietal bone development and interparietal suture morphology under normal conditions. The human fetal material consisted of 15 normal specimens, derived from spontaneous and therapeutically induced abortions. The study was based upon a radiographic analysis of the calvariae. Special attention was paid to the parietal tuber area, the interparietal (sagittal) suture and the frontal-parietal bone edge. The osseous morphology of these regions showed a well-defined primary ossification center at the tuber region from where bone trabeculae of uniform size and radiopacity radiated. The uniform trabeculae radiate at nearly right angles to the long axis of the sagittal suture. The bony trabeculae radiate uniformly towards the anterior fontanelle where at the peripheral border of the parietal bone radiopaque, transverse ossification corpora were observed. In the small fetuses, these corpora were located anterior to the trabeculae and in the larger fetuses close to the trabeculae. Insight into the morphological pattern in normal suture formation is essential for the further description of pathological suture morphology and for understanding normal and pathological suture development.
本研究描述了正常情况下人类产前顶骨的发育及顶间缝形态。人类胎儿材料由15个正常标本组成，取自自然流产和治疗性引产。该研究基于对颅盖骨的影像学分析。特别关注了顶结节区域、顶间（矢状）缝以及额顶骨边缘。这些区域的骨质形态在结节区域显示出一个界限清晰的初级骨化中心，大小和不透射线性一致的骨小梁从这里呈放射状分布。均匀的骨小梁几乎与矢状缝的长轴成直角放射状分布。骨小梁朝着前囟均匀放射状分布，在顶骨周边边界处可见不透射线性的横向骨化体。在较小的胎儿中，这些骨化体位于骨小梁前方，而在较大的胎儿中则靠近骨小梁。深入了解正常缝形成的形态模式对于进一步描述病理性缝形态以及理解正常和病理性缝的发育至关重要。
