2025年2月9日 · Atlanto-occipital dissociation injuries are severe and include both atlanto-occipital dislocations and atlanto-occipital subluxations. The tectorial membrane and alar ligaments …

Occipitocervical dissociation (OCD) or atlantooccipital dislocation (AOD) was first described by Blackwood in 1908 and was considered quite rare as compared to other cervical spine injuries .

2011年5月9日 · Basion-dental interval (BDI): from tip of clivus to tip of dens. If BDI > 5 mm in adults and > 10 mm in children, consider AOD. Powers ratio = BC/AO where, B: basion, C: …

Atlanto-occipital dislocation (AOD) is being increasingly recognized as a potentially survivable injury as a result of improved prehospital management of polytrauma patients and increased …

Atlanto-occipital dissociation (AOD) is a highly lethal ligamentous injury at the craniocervical junction (CCJ) with high risk for the neurologic deficit. Before the recent decades, there was …

If a radiological method for measurement is used to determine AOD on the lateral radiograph, the basion-axial interval-basion dental interval (BAI-BDI) method is recommended. The presence …

2013年5月1日 · Although BDI was the most sensitive of previously available methods, it failed to identify AOD in 28% of patients in our series. Also widely used, BAI and Powers ratio both had …

2021年2月4日 · We aimed to describe the findings of traumatic atlanto-occipital dislocation (AOD) on cervical spine CTs and differences leading to varying treatment of these patients. We …

2023年2月1日 · Atlantooccipital dislocation (AOD) is a highly unstable and often neurologically devastating injury to the craniocervical junction that typically results from high-energy trauma. …

2019年1月1日 · A ratio over 1 indicates atlanto-occipital dissociation (AOD. BAI is the horizontal distance between basion and the posterior cortex of the axis (normal ≤12 mm). BDI is the …