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Updated: May 27, 2026

A Morphometric and Cellular Analysis Method for the Murine Mandibular Condyle
Published on: January 11, 2018
Accessory mandibular condyle at the coronoid process
Zachary S Peacock1, Cory M Resnick, William C Faquin
1Departmentsof Oral & Maxillofacial Surgery and Pathology, Massachusetts General Hospital, Harvard School of Dental Medicine, and Harvard Medical School, Boston, Massachusetts 02114, USA. zpeacock@partners.org
Abstract:
Coronoid process hyperplasia is a rare cause of mandibular hypomobility. It can result from temporalis muscle hyperactivity, trauma, and neoplasia, but often is idiopathic. Enlargement of the coronoid process leading to pseudojoint formation with the zygomatic arch is known as Jacob's disease. It results most commonly from an osteochondroma of the coronoid process. This is the first reported case of a non-neoplastic accessory mandibular condyle located at the coronoid process articulating with the zygoma.
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