Coronoid process of the mandible

Coronoid process of the mandible is an anatomical feature found in the human skull. It is a thin, triangular eminence, which is flattened from side to side and varies in size and shape in different individuals.

Anatomy

The coronoid process is located on the mandible, or lower jawbone, one of the primary bones of the face. It is positioned towards the front of the mandible and is the insertion point for the temporalis muscle, one of the muscles involved in mastication (chewing).

The coronoid process is triangular in shape and is flattened from side to side. Its anterior border is thin and sharp, and its posterior border is thicker and forms the anterior boundary of the mandibular notch. The lateral surface of the coronoid process is smooth and provides attachment to the temporalis muscle.

Function

The primary function of the coronoid process is to provide a point of attachment for the temporalis muscle. This muscle is one of the major muscles involved in mastication, and its contraction pulls the coronoid process upwards, resulting in the closing of the jaw.

Clinical significance

In some cases, the coronoid process can be involved in certain medical conditions. For example, in coronoid hyperplasia, the coronoid process grows excessively, which can lead to limited jaw movement. This condition can be diagnosed using medical imaging techniques such as X-rays or CT scans, and may require surgical intervention.

See also

• Mandible
• Temporalis muscle
• Mastication
• Coronoid hyperplasia