What is atlantoaxial rotation dislocation fixation?

summary

Atlantoaxial dislocation, or atlantoaxial dislocation, refers to the loss of the normal relationship between the first and second segments of the cervical spine. This is a rare but serious disease, which can cause compression of the medulla oblongata and high cervical spinal cord, and even death due to quadriplegia and respiratory failure. Because of its high rate of disability and death, it must be diagnosed and treated in time. There are many causes, such as old odontoid fracture caused by trauma, congenital deformity of odontoid process, transverse ligament or lateral mass joint destroyed by infection or inflammation, and even tuberculosis or tumor invading atlantoaxial joint, which can cause atlantoaxial joint instability or dislocation.

What is atlantoaxial rotation dislocation fixation?

1. The causes of atlantoaxial dislocation are traumatic dislocation. For example, in the case of odontoid process fracture, from the upper posterior angle of the axis and behind the fracture line, when the posterior arch of the atlas changes forward, this length is the space that the spinal cord can occupy. The odontoid process will clamp the spinal cord between the odontoid process and the posterior arch of atlas, which is more likely to be injured.

2. Congenital malformations can also lead to atlantoaxial dislocation. People with occipitocervical dysplasia are more likely to have acute atlantoaxial dislocation after trauma. Many patients will slowly appear atlantoaxial instability in adolescence. The common diseases are segmental disorder, occipital and atlanto vertebral fusion into neck, 2-3 vertebral fusion and odontoid process dysplasia.

3. Spontaneous dislocation is also the cause of atlantoaxial dislocation. Adult patients are more secondary to rheumatoid arthritis, children are more secondary to deep neck infection. Atlantoaxial rotational fixation is actually old dislocation. Atlantoaxial rotatory subluxation caused by spontaneous and minor injuries actually belongs to atlantoaxial rotatory fixation.

matters needing attention

Atlantoaxial joint dislocation is the most common injury of the upper cervical spine, which usually presents progressive aggravation. Atlantoaxial dislocation often occurs in middle-aged and elderly friends. With the development and aggravation of the disease, patients may have high compression of the spinal cord, which is life-threatening. Therefore, the prevention of atlantoaxial dislocation should be valued by everyone.