The odontoid process (also dens or odontoid peg) is a protuberance (process or projection) of the Axis (second cervical vertebra). It exhibits a slight constriction or neck, where it joins the main body of the vertebra.

2024年11月30日 · Odontoid fractures are relatively common fractures of the C2 vertebral body (axis) that can be seen in low energy falls in eldery patients and high energy traumatic injuries in younger patients.

Odontoid process is the central pillar of the craniovertebral junction. Imaging of this small structure continues to be a challenge for the radiologists due to complex bony and ligamentous anatomy. A wide range of developmental and acquired abnormalities of odontoid have been identified.

2024年10月31日 · Odontoid process fracture, also known as a peg or dens fracture, occurs where there is a fracture through the odontoid process of C2. The mechanism of injury is variable, and can occur both during flexion or extension, and with or without compression 5. There are two classification systems 5,6.

The odontoid process, also called the dens, is a protuberance of the axis. Life-threatening fractures can occur as a result of forces acting on this anatomical structure due to its proximity to the spinal cord and brainstem. [1] The C2 vertebra, also known as the axis, is one of three atypical vertebrae.

2024年3月3日 · Odontoid fractures typically result from trauma, commonly occurring due to hyperflexion of the cervical spine. High-energy accidents often cause these fractures in younger patients, whereas lower-energy impacts are more common in older individuals.

2015年8月8日 · The odontoid process is a critical component of the cranio-cervical junction. Therefore, clinicians who diagnose, treat, or operate this region need a strong background in regard to the embryology, anatomy, and anatomical …

2023年3月23日 · The odontoid or 'peg' projection, also known as the open mouth AP projection (or radiograph), is an AP projection of C1 (atlas) and C2 (axis) with the patient's mouth open. This view focuses primarily on the odontoid process of C2, and is useful in visualizing odontoid and Jefferson fractures.

2023年10月30日 · The dens axis (literally ‘tooth of the axis’), also called the odontoid process or the peg, is the separated body of the atlas that fused with the body of the axis during early life. It exhibits a small constriction called the neck , on the place where it fuses with the body of the axis.

Type II odontoid fractures occur when the cervical spine is hyperflexed (bent severely backward) or hyperextended (bent severely forward). Hyperflexion and hyperextension can be caused by trauma such as a fall or whiplash from a motor vehicle accident.