Results 151 to 160 of about 489,511 (195)

Atlantoaxial Instability and Down Syndrome

Pediatrics, 1988
Since Spitzer and co-workers1 described "forward displacement of the atlas on the axis" in persons with Down syndrome 25 years ago, approximately 30 reports have been published on atlantoaxial instability, subluxation, and dislocation in patients with this chromosomal disorder.
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Os Odontoideum with Posterior Atlantoaxial Instability

Spine, 1991
Nine patients who had os odontoideum with posterior atlantoaxial instability are reviewed. Three parameters were measured on the lateral radiographs: the distance from the os odontoideum to the spinous process of the axis in extension (Dext), the distance from the os odontoideum to the posterior arch of the atlas (Datl), and the degree of instability ...
N, Shirasaki, K, Okada, S, Oka, N, Hosono, K, Yonenobu, K, Ono   +5 more
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Atlantoaxial Instability in Mucopolysaccharidosis Type VII

Journal of Pediatric Orthopaedics, 1989
We report a 15-year-old boy with mucopolysaccharidosis (MPS) Type VII (Sly disease) who was found to have atlantoaxial instability with quadriparesis. Subluxation of C1 on C2 has also been documented in patients with Type I and Type IV MPS. Routine screening of the cervical spine is recommended in patients with "MPS Type VII" so that delayed diagnosis ...
P D, Pizzutillo, J A, Osterkamp, C I, Scott, M S, Lee   +3 more
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TRAUMATIC ATLANTOAXIAL DISTRACTIVE INSTABILITY

The Journal of Trauma: Injury, Infection, and Critical Care, 1994
We present an uncommon case of traumatic atlantoaxial distractive instability which manifested itself clinically in a respirator-dependent quadriplegic. The initial radiographic finding was anterior atlantoaxial dislocation. The patient was managed initially by halo traction and, 8 weeks later, demonstrated occipitocervical fusion with gratifying ...
C I, Huang, I H, Chen, L S, Lee
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Atlantoaxial Instability in Lesch-Nyhan Syndrome

Spine, 1996
A clinical case report of two brothers with Lesch-Nyhan syndrome found to have atlantoaxial instability is reported.To report the clinical and radiologic findings and the operative outcome in these patients.Both patients had biochemically proven Lesch-Nyhan syndrome. No previous cases of cervical instability have been reported in this group of patients.
P C, Shewell, A G, Thompson
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Cervical Angina Caused by Atlantoaxial Instability

Journal of Spinal Disorders & Techniques, 2004
Cervical angina is defined as a paroxysmal precordialgia that resembles true cardiac angina caused by cervical spondylosis. Cervical angina most commonly results from compression of the C7 ventral root. We present here a case of cervical angina caused by atlantoaxial instability.
Yoshiyuki, Ito, Nobuhiro, Tanaka, Yoshinori, Fujimoto, Yuji, Yasunaga, Osamu, Ishida, Mitsuo, Ochi   +5 more
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Pathomechanics of Atlantoaxial Instability

2018
Atlantoaxial instability can arise from different disorders, including trauma, congenital and developmental anomalies, rheumatoid arthritis, degenerative disorders, inflammatory or infectious lesions, neoplasms, and secondary to certain surgical interventions.
Chunhui Wu, Xuhui Zhou
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Symptomatic atlantoaxial instability in Down syndrome

Journal of Neurosurgery: Pediatrics, 2005
Object The aim of this study was to audit the treatment of symptomatic atlantoaxial instability in Down syndrome and to assess factors associated with fusion failure in this group of patients.
Ali, Nader-Sepahi, Adrian T H, Casey, Richard, Hayward, H Alan, Crockard, Dominic, Thompson   +4 more
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Atlantoaxial Instability: Evolving Understanding

2019
The atlantoaxial joint is the most mobile joint in the body. The physical architecture of the joint is characterized by a uniformly round and approximately flat surface, which allows a wide range of unobstructed movements. The standing human posture and lifelong heartbeat like uninterrupted activity of the atlantoaxial joint, and its ability to ...
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Two methods of atlantoaxial stabilisation for atlantoaxial instability.

Acta orthopaedica Belgica, 2008
Thirty-seven patients, 19 males and 18 females, with a mean age of 37.6 years (range 9-62), underwent atlantoaxial fusion for atlantoaxial instability associated with pseudarthrosis of the odontoid, fixed rotary subluxation, rheumatoid arthritis, and mongolism.
Mohamed Adel, El Masry, Walaa Ikram, El Assuity, Foad Zamel, Sadek, Hossam, Salah   +3 more
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