These are the seven bones of the neck, called the cervical vertebra. The top bone, seen on the right of this picture, is called the atlas, and is where the head attaches to the neck. The second bone is called the axis, upon which the head and atlas rotate.

The cervical vertebrae are the smallest and most superior of the vertebrae. The most superior of these vertebrae articulate with the skull. The thoracic vertebrae are matched to each pair of ribs to form the rib cage and establish the thoracic cavity.

The ischium forms the most inferior and posterior portion of the coxal bone; It is the portion of the pelvic girdle that supports the body when seated and it is commonly known as the “sits bone”.

The atlas is ring-shaped and has the important task of supporting the head. It’s also responsible for facilitating movement in head and neck. When you nod your head “yes,” that’s the atlas at work. It serves as a pivot, and it allows your head to move forward and backward.

Markings of the Axis Bone: It articulates with body of the vertebra below (C3). Odontoid process or dens (Dens axis) is a prominent rounded superior projection from the body. This tooth-like elevation serves a stable point around which the atlas bone rotates (Gr., odous, tooth).

In anatomy, the axis (from Latin axis, “axle”) or epistropheus, is the second cervical vertebra (C2) of the spine, immediately posterior to the atlas, upon which the head rests. The axis’ defining feature is its strong odontoid process (bony protrusion) known as the dens, which rises dorsally from the rest of the bone.

The axis is composed of a vertebral body, heavy pedicles, laminae, and transverse processes, which serve as attachment points for muscles. The axis articulates with the atlas via its superior articular facets, which are convex and face upward and outward.

➡️Atlas bone is also called Yes bone because it is responsible for the yes movement that we can do…..

C1, C2, and C3 (the first three cervical nerves) help control the head and neck, including movements forward, backward, and to the sides. 1. The C2 dermatome handles sensation for the upper part of the head, and the C3 dermatome covers the side of the face and back of the head. 2. (C1 does not have a dermatome.)

C1 and C2 Vertebrae Breaks, Fractures, and Misalignments Symptoms following an injury to the cervical vertebrae C1 and C2 may include: Complete paralysis of arms and legs. Muscle atrophy. Limited head and neck movement.

How long does it take to recover? A simple break that doesn’t affect your spinal cord can be treated with a neck brace worn for six to eight weeks until the bone heals. More complicated breaks can require surgery and other treatments such as a stiff neck brace for up to three months.

Your halo brace is keeping your neck and spine from moving while your spine heals. You will wear the halo brace all the time. The ring (or halo) around your head is held in place by four screws (or pins) in your skull. The ring is attached by four bars to a stiff, lightweight vest that fits around your chest.

Is a Halo Brace Painful? No, the halo brace should not cause pain. Some kids get headaches, especially while eating, but this usually goes away after the child gets used to the brace. If the pain continues or gets worse, the surgeon may adjust the pins to make the child more comfortable.

In conclusion, the halo vest is an excellent method of cervical spine immobilization that is acceptable to most patients. Side effects and complications are generally mild, if they occur at all, and rates of healing for many cervical spine injuries are excellent.