Where does the cruciform ligament attach?
atlanto-axial joint
The cruciate ligament of the atlas (cruciate may substitute for cruciform) is a ligament in the neck. It forms part of the atlanto-axial joint….
| Cruciate ligament of atlas | |
|---|---|
| From | medial tubercles of atlas bone (C1), anterior side of foramen magnum of occipital bone of skull, body of axis bone (C2) |
| Identifiers |
What does the cruciform ligament do?
The cruciate ligament of the atlas (also known as the cruciform ligament) is an important ligamentous complex that holds the posterior dens of C2 in articulation at the median atlantoaxial joint.
What ligament holds C1 and C2 together?
The joint between the C1 and C2 vertebrae is called the atlantoaxial joint. Unlike other vertebral joints, the atlantoaxial joint does not have an intervertebral disc. This joint is secured by a thick, strong ligament called the transverse ligament.
Which ligament is found only on the atlas?
The Anterior Longitudinal Ligament attaches to the front (anterior) of each vertebra….Ligaments.
| Ligament | Spinal Region | Limits… |
|---|---|---|
| Posterior Atlantoaxial | Axis & Atlas | Flexion |
| Ligamentum Nuchae | Cervical | Flexion |
What ligaments are present at the atlantoaxial joint?
Atlantoaxial joint
| Type | Atlantoaxial joint complex: Synovial joint; biaxial |
|---|---|
| Ligaments | Cruciform ligament (transverse ligament of atlas, superior and inferior longitudinal bands), tectorial membrane, alar ligaments, apical ligament of dens |
| Innervation | Ventral primary ramus of the second cervical spinal nerve |
What movements does the atlantoaxial joint permit?
The C1 C2 spinal motion segment, also called the atlantoaxial joint, is located in the upper portion of the cervical spine. It consists of the C1 and C2 vertebrae, and the anatomical structures connecting them. This segment provides rotational motion, supports the head, and protects the spinal cord and nerve pathways.
What movement does the atlanto occipital joint allow?
Being an ellipsoid joint, the atlantooccipital joint allows movement in two degrees of freedom. These are flexion-extension and lateral flexion. However the principal movement available at the atlantooccipital joint is that of flexion – extension.
What ligaments are in the neck?
Three major cervical spine ligaments are:
- Anterior longitudinal ligament. This ligament extends from the base of your skull, down the front of the cervical vertebra.
- Posterior longitudinal ligament. This ligament starts at C2 and extends down the back of your cervical vertebrae.
- Ligamentum flava.
What are the ligaments in the neck called?
Ligaments of Cervical Spine Apical ligament: it is short and attaches anterior part of foramen-magnum. Alar ligaments: they are symmetrically placed and inserted onto occipital -condyles. Rotation to right are limited to by left alar ligament and vice-verca.
Which ligament prevents hyperextension of neck?
Anterior Longitudinal Ligament
Anterior Longitudinal Ligament The primary function of this ligament is to prevent hyperextension, which happens when there is excess bending of the spine in the backward direction.
Which ligament checks atlanto-occipital side flexion and rotation?
Atlantooccipital joint
| Type | Synovial ellipsoid joint; biaxial |
|---|---|
| Ligaments | Posterior atlantooccipital ligament, anterior atlantooccipital ligament |
| Innervation | C1 spinal nerve |
| Blood supply | Anastomosis between deep cervical, occipital and vertebral arteries |
| Movements | Principal movement; Flexion – extension Limited lateral flexion |
How does atlanto-occipital dislocation happen?
When severe flexion or extension exists at the upper cervical level, atlanto-occipital dislocation may occur. Atlanto-occipital dislocation involves complete disruption of all ligamentous relationships between the occiput and the atlas.
What does C3 C4 C5 C6 control?
C5, as mentioned earlier, along with C3 and C4, contributes to the phrenic nerve that innervates the diaphragm. Roots C5, C6, and C7 produce the long thoracic nerve, responsible for controlling the serratus anterior.