What is the ligament alar?

Alar liga is a pair of connective tissue that connects the second cervical vertebra, known as OSA or C2, to the skull. It results from both sides of the lair, a dental pin protruding from the central upper aspect of the vertebra and laterally intersects to connect to the occipital bone on the underside of the skull. Since the axis is a bone that allows the head rotation on the neck, the ligament alar helps to reduce the range of movement when the head turns from side to side. Also known as the Odontoid control liga, the odontoid process is a different name for the DENS, it checks or controls rotation and prevents the head from turning too far to both sides.

head support on the backbone column is largely the task of the two best cervical vertebrae, atlas and axis. The atlas directly connects with the skull over the occipital bones, the curved fate on the underside of the skull through which the spinal cord leaves the skull. As the name suggests is responsible for supportora's head weight on the neck. Just below the atlas is the axis, these stacked bones associated with the axis touns. The DENS projects upwards from the front or front aspect of the axis body, just before it is mixed, and encounters the front arch of the Atlas bone above it and forms a vertical swivel point that the atlas can rotate about.

Since the atlas does not rotate due to the skull, instead of moving up and down, the axis is the bone that the skull and atlas turn to allow the head of the head shaking. This is made possible by DENS. However, something must limit this rotation, so the head cannot turn too far in both directions. Alar ligament is a structure that keeps this movement under control.

As well as any bonds, the alarm liga is made of strong fibers of aelastin collagen, which holds two bones together like a rope. This liga is based on both sides of the lair, where it is located in the body of the atlas, and extends a short distance out and slightly up. Then connects to the lower edge of the occipital bone toboth sides of the foramen magnum, large holes in the bone through which the spinal cord enters the skull. When the head and the Atlas turn around Denns in one direction, the alarm ligament on the other side of the lair from the direction that turns the head is stretched to its limit, which prevents further head rotation.