Can you survive atlanto-occipital dislocation?

Prognosis. The injury is immediately fatal in 70% of cases, with an additional 15% surviving to the emergency room but dying during the subsequent hospital stay. A basion-dental interval of 16mm or greater is associated with mortality. In those with neurologic deficits, survival is unlikely.

What is atlantoaxial dislocation?

Atlantoaxial dislocation refers to a loss of stability between the atlas and axis (C1–C2), resulting in loss of normal articulation (Fig. 1). The atlantoaxial joints can lose stable articulation from traumatic, inflammatory, idiopathic, or congenital abnormalities.

What is atlanto-occipital subluxation?

Atlanto-occipital dislocation occurs more often in children due to the laxity of the ligamentous structures anchoring the occiput to the axial skeleton. The mechanism of action usually involves a sudden acceleration-deceleration force on the head of the child.

Is atlanto-occipital dislocation common?

Abstract. Atlanto-occipital dislocation (AOD) is a devastating condition that frequently results in prehospital cardiorespiratory arrest and accounts for 15% of fatal spinal trauma. Atlanto-occipital dislocation occurs 5 times more commonly in children than adults, and is believed to be caused by hyperextension.

What is atlanto-occipital joint?

The atlanto-occipital articulation (also known as the C0-C1 joint/articulation) is comprised of a pair of condyloid synovial joints that connect the occipital bone (C0) to the first cervical vertebra (atlas/C1).

What is occipital dislocation?

Atlanto-occipital dislocation (AOD) is a ligamentous and/or osseous injury of the craniocervical junction (CCJ) [1]. It is associated with a high incidence of neurological complications and mortality [2]. AOD should be suspected in any high-energy trauma and is often associated with other severe injuries [3].

What movement occurs at the atlanto-occipital joint?

flexion-extension
Along with the atlantoaxial joint, it makes up a group called the craniovertebral joints. The principal movement at the atlantooccipital joint is flexion-extension. This movement permits nodding of the head, as seen when indicating approval (the “yes” movement).

Where is the atlanto-occipital joint located?

The atlanto-occipital joint on each side is between the occipital condyles and the superior facets on lateral masses of the atlas. (Fig 3.8) This is an ellipsoidal joint supported by the anterior and posterior atlanto-occipital membranes connecting the margins of the foramen magnum to the arches of atlas.