n.向后弯曲；后屈

The retroversion angle of odontoid process and radian index of lateral facet of the ax... 结论小儿和成人的寰枢椎在解剖上存在着一定的差异,这些差异可能与寰枢椎旋转畸形的发病机制有关。

The 2nd, two legs are the same as shoulder breadth apart, extend double arm, it is axes with the waist, the retroversion before making moves. 第二节，两腿分开同肩宽，伸展双臂，以腰为轴心，作前后屈运动。

Especially the patient of infecund retroversion of uterine tilting back ward after a few marriage, use an uterus suspensory art, conduce to be pregnant. 特别是一些婚后不孕的子宫后倾后屈患者，采用子宫悬吊术，有助于怀孕。

Esophagogastroduodenoscopy was performed and only twisted mucosa converging into a point near the esophagogastric junction was noted during retroversion of the endoscope. 在内视镜下胃的出口并不容易找到，只在内视镜反转时看见扭曲的黏膜皱壁集中到靠近食道胃接合处旁的一个小区域。

Uterine retroversion is not rare in reproductive women but is usually asymptomatic.Surgical intervention is indicated when it becomes symptomatic or related to infertility. 摘要背景和目的：子宫后倾或脱垂于妇科并不少见，一般大多不具症状或症状轻微不需侵入性治疗.

Pevic examination showed the outlet and vagina were normal. The cervix was smoth. The uterus was normal in size with 1st degree retroversion . Both adnexas were thickened. 一般情况好,盆腔检查外阴及阴道正常,宫颈光滑,子宫正常大小,一度后倾,宫旁两侧增厚