结论常规超声检查对胎儿成骨发育不全的筛检有着重要意义，为产前诊断胎儿骨骼发育异常的首选方法。
Conclusion: Conventional ultrasound plays an important role in checking fetal dysostosis and is the first method in diagnosing the fetal dysostosis before birth.
结果28例成骨发育不全患者，均有四肢短小并多发骨折，其中16例胎儿羊水在正常范围，12例羊水较多。
Results: Limb shortness and multiple fractures were presented in all cases. Among them, fetal amniotic fluid of 16 cases were normal and 12 cases with excessive fetal amniotic fluid.
目的：初步研究和评价内置式牵引器牵引成骨治疗上颌发育不全术后的稳定性。
Objective: to investigate the stability of internal midface distraction in correction of severe maxillary hypoplasia secondary to cleft lip and palate.
目的：初步研究和评价内置式牵引器牵引成骨治疗上颌发育不全术后的稳定性。
Objective: to investigate the stability of internal midface distraction in correction of severe maxillary hypoplasia secondary to cleft lip and palate.
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