Anatomy
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Skull & Facial

Cranium · Sinuses · Facial Bones · TMJ

Cranial vault + facial skeleton. Almost all skull positioning relies on positioning lines (OML, IOML, AML, MML) and head rotation accuracy.

GlabellaNasionAcanthionMental PointEAM (External Acoustic Meatus)Outer CanthusTop of Ear Attachment
Tap a labeled point to see its clinical role and positioning relevance.

Landmarks (7)

Positioning importance

  • Establish OML / IOML before angulation — every skull projection depends on it.
  • No rotation: equal distance from outer table to lateral border of orbits.
  • Towne 30° caudal to OML (37° to IOML) projects dorsum sellae into foramen magnum.

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