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At least 595 records · Page 33Linked to original sources
PubMed1986

Atypical unstable burst fracture of the atlas. Treated by primary atlantoaxial fusion.

Burst fracture of the atlas with concomitant disruption of the transverse ligament is presented by the author because it demonstrated an atypical fracture pattern on computed tomography that has bearing on the treatment modalities. The integrity of the posterior arch was preserved, except for a fracture in the proximity of one of the lateral masses. The patient underwent a posterior C1-C2 fusion before there was evidence of healing of the posterior arch fracture. The fracture healed, and a good C1-C2 fusion was noted.

Adult↗
PubMed1986

[Elongated transverse process of the atlas. A contribution to the differential diagnosis of cervical lymph node hyperplasia].

In some patients the transverse process is palpable as a solid immobile knot in the angle of the mandible and is sometimes interpreted as an enlarged cervical gland or as a tumour of the parotid gland. The difficulties of differential diagnosis are illustrated by case reports. The possibilities of examination (full-size radiogram, tomogram, computer tomogram) are shown. The results of cephalometric measurements concerning the size of the atlas and its relation to the base of the skull are also described.

Adult↗
PubMed1986

Combined atlas and axis fractures visualized by computerized tomography.

Combined fractures of the atlas and axis are rare, with only four cases reported in the English literature. Combined fractures occur most frequently in the elderly. Computerized axial tomography and other special techniques are required for adequate visualization of these complex fractures.

Aged↗
PubMed1986

Torticollis in children caused by congenital anomalies of the atlas.

Hemi-atlas is a rare congenital anomaly in the formation of the first cervical vertebra. It may cause a rather severe and progressive torticollis. When a child is young, the neck, despite the deformity, is flexible and the torticollis can be passively corrected. However, in some patients it becomes increasingly severe and fixed. I describe the findings in seventeen patients, seven of whom were operated on between 1975 and 1983. Treatment with a brace was shown to be ineffective. In patients with severe deformities, fusion of the upper part of the cervical spine is recommended. Fusion was obtained in all seven patients in whom it was attempted, and there was good postural correction in all. Early operation is recommended if the deformity is increasing. Gradual correction in a halo cast followed by posterior fusion is recommended as the treatment of choice in patients with severe torticollis.

Adolescent↗
PubMed1986

[Analysis of the Greulich-Pyle atlas using the TW2 and TW2-A method].

Authors analyze Greulich and Pyle's atlas, using TW2 and TW2-A methods, in their three respective modalities (20B, C, RUS). They observe that there are differences between three variables and GP. Results are compared with those of other authors concluding that use of numerical methods adapted to population in study are the ideal ones.

Adolescent↗
PubMedDate not supplied

Atlantoaxial rotatory subluxation, congenital absence of the posterior arch of the atlas, and cerebral palsy: an unusual triad.

Posttraumatic chronic atlantoaxial rotatory subluxation and congenital absence of the posterior arch of the atlas are rare upper cervical spine abnormalities. The present case is that of a 4-year-old girl who had these two spinal disorders as well as spastic cerebral palsy. The interrelationship, if any, between these three conditions is unclear but presented an unusual diagnostic triad. A posterior spinal fusion between the occiput and third cervical vertebra was performed because of concern for upper cervical spine instability. The patient was immobilized in a halo vest, and a solid fusion occurred within 3 months. Preoperatively the child had never walked independently, but postoperatively, while wearing the halo vest, she was able to walk without external support, thus raising the suspicion of previous spinal instability. Fifteen months postoperatively she remains spastic but has a stable, orthotic-free, independent gait.

Accidents, Traffic↗
PubMed1985

Benign osteoblastoma of the atlas: a case report.

Benign Osteoblastomas are uncommon tumors which make up approximately 1 percent of all bone tumors. The distribution of the tumor demonstrates a high incidence for spinal involvement. This case report shows an osteoblastoma in a somewhat unusual location of the cervical spine, the posterior arch of the atlas.

Adolescent↗
PubMedDate not supplied

An atlas of microscopic dissection following the attic approach to the cat's middle ear.

A brief illustrated atlas demonstrates the progressive relationships of the anatomical structures of the cat's middle ear as one dissects these from the attic approach. There was an attempt to demonstrate the nerves of the lateral semicircular canal and the utricle but without preserving the footplate of the stapes to afford an unobstructed view of the nerves. For the first time, the anatomical features of the cat's middle are are brought together in a progressively illustrated and single source.

Animals↗
PubMed1979

[Treatment by a direct surgical approach of a false arterio-venous traumatic aneurysm between the vertebral artery and the internal jugular vein at the level of the atlas (author's transl)].

The authors report a case of traumatic arteriovenous fistula between the vertebral artery and the internal jugular vein at the level of the atlas, treated successfully by a direct surgical approach which permitted exclusion after simple dissection. The relative ease of the surgical approach of the suboccipital segment of the vertebral artery may permit one to extend this technique to other more common indications, in particular due to atheroma.

Adult↗
PubMed1982

[Post-traumatic instability between the atlas and the axis in children. Apropos of 5 cases].

The authors have observed 5 cases of atlanto-axial instability in children aged from 18 months to 8 years. All the cases were seen after severe trauma and presented with abnormal neurological signs. All patients were first treated conservatively and were operated on secondarily by atlanto-axial fusion using graft and wiring for persistent radiological instability between the atlas and axis. In two cases instability was due to an atlanto-axial subluxation with rupture of the transverse ligament; one of these was reduced by traction. In one case there was an anterior subluxation without fracture. In one case there was a fracture of the odontoid process in which instability persisted in spite of bony union of the fracture. In the last case, the odontoid process was intact shortly after the trauma but its central portion disappeared secondarily. The cause of this disappearance is discussed.

Atlanto-Axial Joint↗
PubMed1982

[Bipartite atlas].

A case is described of a child aged twelve with rib abnormalities, a Klippel-Feil syndrome and a complete fusion between C2 and C7. The atlas showed abnormal ossification of the anterior and posterior arches. No similar description has been found in the literature. A posterior spine fusion between C1 and C2 was performed.

Cervical Atlas↗
PubMed1978

Osteochondroma of the atlas: a case report.

An extremely rare case of osteochondroma arising from the right lateral mass of an atlas was successfully treated by a complete removal through an oblique high cervical incision coupled with a transection of the underlying sternocleidomastoid muscle and careful freeing and retraction of the adjacent vital neurovascular structures.

Cervical Atlas↗
PubMedDate not supplied

A rational approach to burst fractures of the atlas.

The stability of a burst fracture of the atlas (Jefferson's fracture) should be determined in order to decide upon the appropriate treatment. Unstable fractures include those with a rupture of the transverse ligament, or those in which union has been incomplete despite treatment. An occiput-to-C2 or in atlantoaxial arthrodesis may be indicated.

Adult↗
PubMed1995

[Rotation dislocations of the atlas in children].

Rotation subluxations of the atlas (RSA) were encountered in 77 children in a period of 3 years. The authors believe that "fresh" RSA should be managed by non-operative methods. However, some diseases and injuries with the similar clinical manifestations often lead to diagnostic and tactical errors.

Adolescent↗