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Maxillofacial Plastic and Reconstructive Surgery
Fig. 2 | Maxillofacial Plastic and Reconstructive Surgery

Fig. 2

From: Three-dimensional analysis of changes in airway space after bimaxillary orthognathic surgery with maxillomandibular setback and their association with obstructive sleep apnea

Fig. 2

Landmarks and reference plane of total airway space. C1, C2, and C3: The lower most protruding parts of cervical vertebrae 1, 2, and 3. C1-F, C2-F, and C3-F: Planes parallel to FH plane and through C1, C2, and C3. Oropharyngeal airway: The airway space between C1-F and C2-F. Hypopharyngeal airway: The airway space between C2-F and C3-F

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