The alar ligaments are two strong rounded cords that attach the dens of C2 to the occipital condyles. The ligaments' orientation is often described as supernatural but they tend to be more horizontal.

In anatomy, the alar ligaments are ligaments which connect the dens (a bony protrusion on the second cervical vertebra) to tubercles on the medial side of the occipital condyle. They are short, tough, fibrous cords that attach on the skull and on the axis, and function to check side-to-side movements of the head when it is turned.

2024年3月19日 · The alar ligaments are short round ligaments that originate on the dens axis (C2) (odontoid process) and attach onto the medial parts of the occipital condyles. They are part of the stabilisers of the craniovertebral joints.

2024年8月20日 · The alar ligaments join the lateral margins of the sloping upper posterior margin of the dens of C2 to the lateral margins of the foramen magnum (adjacent to the occipital condyles) and lie on either side of the apical ligament. They may be oblique or vertical and are thickest at the occipital attachment.

To assess the integrity of the alar ligaments and thus upper cervical stability. Both the side-bending and rotation stress tests for the alar ligaments are based on preventing the inherent coupling of rotation and lateral flexion in the occipito-atlanto-axial complex.

The alar ligaments are paired ligaments that extend from the superolateral dens to the medial surface of the occipital condyles [Figures 2 and 3]. The alar ligaments are major stabilizers of the CCJ and help hold the dens upright and in close conjunction with the …

2023年10月30日 · Alar ligaments: these paired ligaments course obliquely in a superolateral direction from the posterolateral margins of the apex of dens of axis (C2), to attach on the medial parts of the occipital condyles. The short but strong alar ligaments act to limit excessive motion within the atlantoaxial joint.

2024年4月4日 · Isolated unilateral alar ligament injury (IUALI) is a rare and likely underreported occurrence after upper cervical trauma, with only 16 cases documented in the literature to date. Patients generally present with neck pain, and definitive diagnosis ...

2020年10月29日 · Craniocervical Instability (CCI) is a medical condition where the strong ligaments that hold your head to your upper neck are loose or lax (1). The major ligaments involved are the Alar, Transverse and Accessory ligaments. To learn more about CCI please click on the video below.

The objective of this study is to evaluate the the reliability of magnetic resonance imaging (MRI) in diagnosing alar ligament disruption in patients with potential atlanto-occipital dissociation (AOD).