BACKGROUND The transoral atlantoaxial reduction plate (TARP) fixation has been introduced to achieve reduction, decompression, fixation and fusion of C1-C2 through a transoral-only approach. However, it may also be associated with potential disadvantages, including dysphagia and load shielding of the bone graft. To prevent potential disadvantages related to TARP fixation, a novel transoral atla...

Neck involvement in cases of rheumatoid arthritis is extremely common, and the radiological features have been investigated by several authors, particularly Martel (1961, 1964), Bland, Davis, London, Van Buskirk, and Duarte(1963), Serre, Simon, Janicot, and Levy (1964) and Conlon, Isdale, and Rose (1966). The features most characteristic are atlanto-axial subluxation, serial subluxation, and di...

Partial or complete absence of the posterior arch of the atlas is a well-documented anomaly but a relatively rare condition. This condition is usually asymptomatic so most are diagnosed incidentally. There have been a few documented cases of congenital defects of the posterior arch of the atlas combined with atlantoaxial subluxation. We report a very rare case of congenital anomaly of the atlas...

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BACKGROUND Disorders of the cervical spine are often observed in patients with rheumatoid arthritis (RA). However, the best head position for RA patients with atlantoaxial subluxation in the perioperative period is unknown. This study investigated head position during general anesthesia for the patients with RA and proven atlantoaxial subluxation. METHODS During anesthesia of patients with RA...

It is a well-know fact that type 2 odontoid fractures frequently go into nonunion. If left untreated, patients may develop irreducible atlantoaxial dislocation (AAD). We describe the surgical management of two patients with neglected odontoid fractures and irreducible AAD treated with single stage anterior release followed by posterior instrumented fusion. Both patients presented with history o...

Conservative treatment of atlantoaxial subluxation (AAS) has tended to be rather passive, since there has been a lack of effective tools. The stabilizing effect of a stiff collar in the treatment of AAS was evaluated. Fifty successive rheumatoid patients with unstable AAS were interviewed and examined clinically. Lateral view radiographs of the cervical spine were taken in neutral position, dur...