What is atlantoaxial rotatory fixation?
What is atlantoaxial rotatory fixation?
Atlantoaxial rotatory fixation is a condition in which the first and second vertebrae of the cervical spine become interlocked in a rotated position. This condition can result in serious consequences and thus have a significant impact on patients, especially when diagnosis and treatment are delayed.
How is atlantoaxial subluxation treated?
Treatment of Atlantoaxial Subluxation Treatment includes symptomatic measures and cervical immobilization, usually beginning with a rigid cervical collar. Urgency of treatment is generally based on symptoms or presence of cord abnormalities on MRI in susceptible patients.
Is atlantoaxial instability good?
Prognosis is good for patients with symptomatic AAI in whom posterior spinal fusion is successful and function returns. Surgery may relieve pain, decrease myelopathy, or both in many patients, with results depending on the severity of symptoms and the cause of instability.
How is atlantoaxial subluxation diagnosed?
Subluxation of C1 on C2, referred to as atlantoaxial subluxation, can be quantified by a measurement made between the back of the anterior arch of C1 and the front of the dens or odontoid. This distance is referred to as the atlas-dens interval (ADI).
Where is the atlantoaxial joint?
cervical spine
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.
Can you dislocate your head?
Atlanto-occipital dislocation, orthopedic decapitation, or internal decapitation describes ligamentous separation of the spinal column from the skull base. It is possible for a human to survive such an injury; however, 70% of cases result in immediate death.
What is the treatment for cervical instability?
Some treatments that are commonly implemented for the relief of cervical instability symptoms include: Injection therapy. Physical manipulation. Joint stabilization.
What is the atlantoaxial articulation?
The atlantoaxial joint is a type of synovial joint that is classified as a biaxial, pivot joint. This joint resides in the upper part of the neck between the first and second cervical vertebrae, also known as the atlas and axis, respectively.
What movement does the atlantoaxial joint allow?
The primary movement of the atlantoaxial joint complex is rotation. In rotation the atlas together with the head, rotate around the dens of axis. This movement allows us to turn our head to look towards the left or towards the right.
What movements occur at the atlantoaxial joint?
The primary movement of the atlantoaxial joint complex is rotation. In rotation the atlas together with the head, rotate around the dens of axis….Atlantoaxial joint.
| Type | Atlantoaxial joint complex: Synovial joint; biaxial |
|---|---|
| Movements | Principal movement; axial rotation, Limited flexion, extension, lateral flexion |
Is KFS hereditary?
In most cases, Klippel Feil syndrome (KFS) is not inherited in families and the cause is unknown. In some families, KFS is due to a genetic alteration in the GDF6, GDF3 or MEOX1 gene and can be inherited. When KFS is caused by mutations in the GDF6 or GDF3 genes, it is inherited in an autosomal dominant manner.
Is atlantoaxial joint synovial?
The median atlantoaxial joint is a pivot type of synovial joint. Broadly, the joint is formed by the dens of axis (odontoid process) surrounded by an osteoligamentous ring composed of the anterior arch of atlas anteriorly and the transverse ligament of atlas posteriorly.
