上颌骨额突位于上颌体的前外侧面向上突出，其上方接额骨，前接鼻骨。额骨、鼻骨及上颌骨为直接支持外鼻的骨骼。鼻骨保持鼻梁的高度。上颌骨额突决定鼻背的宽度。
上颌骨额突由梨状孔和泪嵴向头侧方向伸出，与额骨和鼻骨相接。
The maxillary processes extend in a cephalad direction form the piriform aperture to the lacrimal crest, uniting with the frontal and nasal bones.
骨性穹隆由一对鼻骨和上颌骨额突构成，好似一个支架，支撑着鼻上部和上外侧软骨。
Consisting of the paired nasal bones and the ascending frontal process of the maxilla, the vault ACTS as a cantilever, supporting the upper nose and the upper lateral cartilages.
方法：本手术通过凿断鼻骨及部分上颌骨额突揿压折断使其耸立以抬高鼻背和移植自体鼻中隔软骨以增高鼻尖或鼻翼，一次性完成鼻外形的整体修复。
Methods: the operation procedure included frustration and elevation of the nasal bone and part of the forntal process of maxilla and replacement of the nasal septum between greater alar cartilages.
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