Results 221 to 230 of about 52,504 (265)

Atlas hypoplasia as a cause of high cervical myelopathy

Journal of Neurosurgery, 1993
✓ A high cervical myelopathy due to atlas hypoplasia is described in a 56-year-old man; the condition caused marked segmental compression of the spinal cord. A remarkable neurological recovery followed decompressive laminectomy of the atlas and adjacent regions. The authors discuss the embryology and etiology of this anomaly.
Y, Komatsu, T, Shibata, S, Yasuda, Y, Ono, T, Nose   +4 more
openaire   +2 more sources

INCOMPLETE OSSIFICATION OF THE ATLAS IN DOGS WITH CERVICAL SIGNS

Veterinary Radiology & Ultrasound, 2009
Osseous defects affecting the atlas were identified in computed tomography and magnetic resonance images of five dogs with cervical signs including pain, ataxia, tetraparesis, or tetraplegia. Osseous defects corresponded to normal positions of sutures between the halves of the neural arch and the intercentrum, and were compatible with incomplete ...
Warren-Smith, C. M R, Kneissl, Sibylle, Benigni, Livia, Kenny, Patrick J., Lamb, Christopher R.   +4 more
openaire   +3 more sources

ATLAS-AXIS DISLOCATION FOLLOWING CERVICAL INFECTION

JAMA: The Journal of the American Medical Association, 1942
Dislocation of the axis on the atlas is often traumatic (frequently with fracture of the odontoid process and resultant damage to the cord), but it may also occur as a sequel to cervical infections. This second cause brings the patient into the field of the otorhinolaryngologist, who deals with infections in this region and who must recognize the ...
openaire   +1 more source

First cervical vertebra (atlas) fracture mechanism studies using finite element method

Journal of Biomechanics, 2001
Injury mechanisms and stress distribution patterns are important in the clinical evaluation of spinal injuries. Recognition and interpretation of the failure patterns help to determine spinal instability and consequently the choice of treatment. Although, the biomechanics responses of the atlas have received much attention, it has not been investigated
E C, Teo, H W, Ng
openaire   +2 more sources

Why Atlas, why not Heracles: Reflections on the rheumatoid cervical spine

Seminars in Arthritis and Rheumatism, 2005
Rheumatoid involvement of the 24 joints of the cervical spine leads to prominent changes in the occipito-atlanto-axial area. Eight different subtypes of such changes are recognized, depicted, and defined. The frequencies of these 8 subtypes in rheumatoid arthritis and other arthritides are tabulated.
Kari, Laiho, Markku, Kauppi, Yrjö T, Konttinen   +2 more
openaire   +2 more sources

Spontaneous Fracture of Atlas of Cervical Spine Affected by Rheumatoid Arthritis

Scandinavian Journal of Rheumatology, 1985
A case of spontaneous fracture of the atlas in a 67-year-old woman who had suffered from rheumatoid arthritis for more than 20 years is described. This fracture is unique and can present diagnostic problems. Lying in the coronar plane makes the atlas difficult to visualize radiographically.
J, Sandelin, S, Santavirta, E, Laasonen, P, Slätis   +3 more
openaire   +2 more sources

Atlas of craniovertebral junction and cervical spine surgery

2016
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Boiani, S, Presutti, L, Gasbarrini, A, Mattioli, F, Molteni, G   +4 more
openaire   +3 more sources

[Imaging features of developmental stenosis of atlas with degenerative cervical myelopathy].

Zhonghua yi xue za zhi, 2022
Objective: To investigate the imaging features of patients with developmental stenosis of atlas (small atlas) complicated with degenerative cervical myelopathy and to explore the diagnostic criteria of small atlas. Methods: The clinical data of patients with degenerative cervical myelopathy treated by posterior cervical laminoplasty and resection of ...
Y, Tian, F F, Zhou, T, Xia, Y B, Zhao, X, Chen, S F, Pan, L, Zhang, F S, Zhang, S S, Wang, Y, Sun   +9 more
openaire   +1 more source

Unstable Jefferson variant atlas fractures: an unrecognized cervical injury.

AJNR. American journal of neuroradiology, 1992
We retrospectively reviewed the plain films and CT scans of 11 unstable atlas fractures from a series of 72 atlas fractures to better characterize these injuries and to determine if the correct diagnosis could have been made. These 11 atlas fractures were unstable because either the anterior bony ring was disrupted (six cases), the posterior ...
C, Lee, J H, Woodring
openaire   +1 more source

[Unstable Jefferson variant atlas fractures: an unrecognized cervical injury].

Zhonghua wai ke za zhi [Chinese journal of surgery], 1996
Nine cases of unstable Jefferson variant atlas fractures were treated with nonoperative external immobilization between 1989 and 1993. All of them were studied by plain films and CT scans. Seven cases had three breaks of the atlas ring. One case had unilateral anterior arch fracture, associated transverse ligament tear and quadriplegia.
H, Yang, T, Tang, S, Fei
openaire   +1 more source