4. 3.The hypoplasia and displacement of the maxillary segments can directly pull the alar cartilage of cleft side posterolaterally , but it is not the main causes of the deformities.

• 上颌骨裂梨状孔缘外展、后退直接作用鼻翼软骨出现相应症状，不是鼻畸形形成的最主要因素。