Coronoid process of the mandible

The mandible's coronoid process (from Greek korone, "like a crown") is a thin, triangular eminence, which is flattened from side to side and varies in shape and size.

Coronoid process of the mandible
Position of coronoid process in skull (shown in red)
Position of coronoid process in mandible (shown in red)
Latinprocessus coronoideus mandibulae
Anatomical terms of bone

Its anterior border is convex and is continuous below with the anterior border of the ramus.

Its posterior border is concave and forms the anterior boundary of the mandibular notch.

Its lateral surface is smooth, and affords insertion to the temporalis and masseter muscles.

Its medial surface gives insertion to the temporalis, and presents a ridge which begins near the apex of the process and runs downward and forward to the inner side of the last molar tooth.

Between this ridge and the anterior border is a grooved triangular area, the upper part of which gives attachment to the temporalis, the lower part to some fibers of the buccinator.

Coronoid process fractures

Mandible fractures are common injuries. However, coronoid process fractures are very rare. Isolated fractures of the coronoid process caused by direct trauma are rare, as it is anatomically protected by the complex zygomatic arch/ temporo-zygomatic bone and their associated muscles. Most fractures here are caused by strokes (contusion or penetrating injuries).[1]

Additional images

See also


This article incorporates text in the public domain from page 174 of the 20th edition of Gray's Anatomy (1918)

  1. Marius Pricop, Horațiu Urechescu, Adrian Sîrbu (Mar 2012). "Fracture of the mandibular coronoid process — case report and review of the literature". Rev. chir. oro-maxilo-fac. implantol. (in Romanian). 3 (1): 1–4. ISSN 2069-3850. 58. Retrieved 2012-08-19.CS1 maint: multiple names: authors list (link)(webpage has a translation button)

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