Atlanto-Axial Instability (AAI): What You Need to know
Atlanto-axial instability (AAI) is a condition that affects the bones in the upper spine or neck under the base of the skull. The joint between the upper spine and base of the skull is called the atlanto-axial joint. In people with Down syndrome, the ligaments (connections between muscles) are “lax” or …
Cervical Spine Considerations When Anesthetizing Patients with Down ...
Craniocervical instability in DS involves the occiput–C1 or, more commonly, the C1–C2 level. Instability in these areas is usually termed atlantooccipital instability and atlantoaxial instability (AAI). This instability may be the consequence of a generalized ligamentous laxity.
Atlantoaxial Instability in Children with Down Syndrome
Children with Down syndrome are at a slightly increased risk of developing compression of the spinal cord called atlantoaxial instability. This problem is caused by a combination of low muscle tone, loose ligaments and bony changes.
Down Syndrome - Pediatrics - Orthobullets
Jun 16, 2021 · Surgical spinal instrumentation and fusion are indicated in patients with atlantoaxial instability and occipitocervical with progressive neurological deficits. for ADI 5-10, no neurologic findings, and imaging with >14mm space available for the cord.
Atlantoaxial Instability Screening | Adult Down Syndrome Center
Atlantoaxial instability (AAI) is subluxation or slippage of the first neck vertebrae in relation to the second. It is more common in people with Down syndrome (DS) and there are unique screening considerations for people with DS compared to people without DS.
Atlantoaxial Instability - Spine - Orthobullets
Oct 28, 2024 · The atlantoaxial joint is an important "transitional zone" in the cervical spine prone to instability by both degenerative and traumatic processes Pathophysiology
Atlantoaxial Instability - StatPearls - NCBI Bookshelf
Jun 12, 2023 · Radiographic atlantoaxial instability is seen in up to 30% of patients with Down syndrome (DS), but only 1% of patients with DS have symptomatic atlantoaxial instability. Patients with rheumatoid arthritis (RA) are also susceptible to …
Images in spine surgery: Atlantoaxial instability in Down syndrome
May 1, 2007 · The authors reviewed the cases of 12 children with Down syndrome presenting with symptomatic atlantoaxial instability who underwent surgery for internal fixation and fusion.
Images in Spine Surgery : Atlantoaxial Instability in Down syndrome
About 10 to 30% of patients with Down syndrome will demonstrate radiographically confirmed evidence of atlantoaxial instability (increased ADI) on dynamic X-rays, although only about 1-2 % of Down syndrome patients may be symptomatic.
Atlantoaxial Instability – Down Syndrome Indiana
Cervical spine x-rays can help determine whether there are ligament laxity and/or instability at these levels of the neck. If there is evidence of instability of the cervical vertebrae, the child may be at risk for catastrophic neurologic damage with an even mild cervical spine injury.