OBJECTIVE Atlantoaxial instability may result from various pathologic conditions and operative treatment may be required to correct the deformity, provide stability and prevent neurological deficits. We presented our clinic's experience using C1-C2 fusion with polyaxial screw and rod fixation for C1 and C2 instability for various reasons. METHODS AND MATERIAL Four patients with atlantoaxial i...

INTRODUCTION Atlantoaxial instability has been described as a manifestation of ankylosing spondylitis (juvenile and adult onset), reactive arthritis, juvenile idiopathic arthritis, and rheumatoid arthritis; however, it has rarely been reported as an early manifestation of these disorders. We present this case report to increase awareness of the condition in the hope that earlier recognition of ...

A 65-year-old woman with a history of rheumatoid arthritis presented with a rare case of acquired Chiari malformation secondary to atlantoaxial vertical subluxation, associated with congenital atlanto-occipital assimilation. Syringomyelia and tetraparesis improved immediately after posterior fossa decompression and simultaneous occipito-cervical junction fusion. The progression of acquired Chia...

OBJECTIVE To evaluate the prevalence of cervical spine abnormalities among patients with rheumatoid arthritis and correlate the imaging findings with the clinical state. METHODS A cross-sectional study on 35 patients was carried out at the School of Medicine of the Federal University of Goiás (UFG) in 2004. The following were evaluated: age, use of medications and the clinical picture of pain...

Atlantoaxial involvement is rare in metastatic tumors of the spine. We report a case of atlantoaxial metastatic adenocarcinoma of pulmonary origin, which was treated as cervical spondylosis because the first clinical manifestations were cervical pain followed by limitation of rotation. In the literature, most authors stated that in patients with cervical spine metastases but without neurologica...

We report a case of delayed myelopathy caused by atlantoaxial subluxation without fracture. The patient was a 38-year-old male who became aware of weakness in extremities. The patient had a history of hitting his head severely while diving into a swimming pool at the age of 14 years old. At that time, cervical spine plain X-ray images showed no fracture, and the cervical pain disappeared after ...