Angle of the mandible

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Angle of the mandible
Mandibular angle - lateral view.png
Human skull. Position of angle of the mandible shown in red.
Mandibular angle - close-up - lateral view3.png
Mandible seen from bottom. Position of angle shown in red.
Latin Angulus mandibulae
Gray's p.174

The angle of the mandible (gonial angle) is located at the posterior border at the junction of the lower border of the ramus of the mandible.

The angle of the mandible, which may be either inverted or everted, is marked by rough, oblique ridges on each side, for the attachment of the masseter laterally, and the pterygoideus internus medially; the stylomandibular ligament is attached to the angle between these muscles.

The forensic term for the midpoint of the mandibular angle is the gonion.

The mandibular angle has been named as a forensic tool for gender determination, but recent studies have called into question whether there is any significant sex difference in humans in the angle.[1][2]

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Additional images[edit]

Position of angle of the mandible (shown in red). Animation. 
Mandible bone. Position of angle shown in red. 
Mandible. Outer surface. Side view. (Angle labeled at bottom right.) 
Mandible. Inner surface. Side view. (Angle visible at bottom left.) 
The Pterygoidei; the zygomatic arch and a portion of the ramus of the mandible have been removed. 
Mandible. Inner surface. Angle of mandible labeled at bottom right. 


This article incorporates text from a public domain edition of Gray's Anatomy.

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