英文：vomer 概念：形状如梨而得名，居鼻中隔后下部。前缘上有一个沟，筛骨正中板及鼻中隔软骨嵌入其中。
梨状肌是附着在骶骨和大腿骨上的强大的回旋肌，对他们的拉伸有损于骶髂关节的稳定性。
The piriformis muscles, strong external rotators of the thigh, attach to the sacrum and the femur. Stretching them can increase S-I joint instability.
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.
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