Farman A G, Nortjé C J, Joubert J J
J Anat. 1979 May;128(Pt 3):595-600.
Lateral cephalographs from 220 normal adolescent white orthodontic patients, and of individuals with craniofacial dysostosis and oculodento-osseous dysplasia were studied. Variations were observed in the morphology of the posterior margins of the superior articular processes, vertebral artery canals being present in 8%. Posterior arch dehiscence was found in eight individuals, including seven cases in the midline. Three patients had accessory ossicles above the posterior arch of the atlas, and two showed evidence of fusion of the second and third cervical vertebrae. The profile of the atlas was well outside the normal range in both syndromes studied.
对220名正常青春期白人正畸患者以及患有颅面骨发育不全和眼牙骨发育异常的个体的头颅侧位片进行了研究。观察到上位关节突后缘形态存在变异，8%的个体存在椎动脉管。在8名个体中发现了后弓裂开，其中7例位于中线。3例患者在寰椎后弓上方有副骨，2例显示第二和第三颈椎融合的迹象。在所研究的两种综合征中，寰椎的轮廓均明显超出正常范围。
