摘要
目的 :对胎儿脊柱发育进行X线研究 ,为诊治脊柱先天性疾病提供形态学依据。方法 :用X线摄片的方法 ,在正位片上 ,选择存在于整个胎生期内椎弓两个骨化中心间的距离为标志 ,对 12 0例正常胎儿 (胎龄 12周 6 0例 ,2 4周 6 0例 )脊柱宽度的发育进行了观测。结果 :两组脊柱宽度发育的形式表明 ,在 12周内 ,与胸、骶段椎骨宽度相比较 ,颈椎和腰椎的增大不明显 ;至 2 4周 ,胎儿颈椎和腰椎宽度发生了明显的增大。两组C1椎弓两个骨化中心间的距离 ,总是比其它椎骨大。在第12周 ,脊柱的宽度自C2 ～T7有一个逐减的趋势 ,而T8～L1宽度逐增 ,直至L1宽度约达与T2 等值的水平 ,从L1～S1宽度大致保持不变。在第 2 4周 ,脊柱的宽度有一完全不同的形态 ,C2 比C1的宽度大为减小 ,C3～C6 迅速增宽 ,T1较C7有明显减小 ,T2 ～T7逐减 ,T8～S1逐增 ,宽度几乎恢复到T1水平 ,自S2 开始 ,宽度又迅速降低 ,至S5成为最窄部分。结论 :某些椎骨有着相似的生长类型 。
Objective: Study the width of fetus vertebral colomn . Methods: This dissertation selected the distance between two occified center of neural arches, which existed through the whole fetal phase, as labels on anteroposterior x-ray films, and measured 120 cases of normal fetal vertebral width of spine (one group includes 60 cases with fetal age of 12 weeks, the other includes 60 cases with fetal age of 24 weeks ). Results: the widths of cervical and lumbar vertebae column didn't increase clearly within 12 weeks; but by the end of the 24 th week, they increased clearly. Every width of C 1 in the two groups was the maximum. At the 12 th week, the widths of vertebral column decreased from C 2 to T 7, however, increased from T 8 to L 1, and the width of L 1 was almost close to that of T 2, the widths were approximately the same from L 1 to S 1. In the 24 th week, the widths of C 2 were far less than that of C 1, the widths increased quickly from C 3 to C 6, the widths of T 1 were far more larger than that of C 7, the widths from T 2 to T 7 decreased in sequence, the widths from T 8 to S 1 increased in sequence, and the width of S 1 was equals to that of T 1, from S 2, the widths decreased quickly, width of S 5 became minimum. Conclusions: We divided fetus vertebral column into five groups, and provide data for clinic practice.
出处
《大连医科大学学报》
CAS
2002年第2期97-99,共3页
Journal of Dalian Medical University
关键词
胎儿
脊柱发育
宽度
X线照相
fetus
vertebral column development
width
radiograph
