[Classification of continuous multilevel vertebral fractures].

Currently there is still little information about multilevel vertebral fractures (MVF), in addition to the fact that there are no classifications that help us group them in a simpler way, and guide us on their prognosis. The objective of this work is to propose a new classification of continuous type MVF, based on the number of end plates injured of the vertebral bodies and their severity, where we form four groups. A review of continuous MVF cases that we found in our hospital over a 6-year period was carried out, managing to designate 100% of the fractures, by their characteristics, to the corresponding group.

[Radiation exposure of the spine surgeon].

Introduction: in general, spine surgeons seek to minimize soft tissue damage by using less invasive approaches, which causes them to use intraoperative images much more frequently than other surgical specialties; therefore, they are at increased risk of radiation exposure.

Objective: the aim of this work was to analyse the amount of radiation to which the spine surgeon is exposed in different scenarios.

Material And Methods: a prospective study with a descriptive, longitudinal non-randomized data source.

[Traumatic spondyloptosis C7-T1 without neurologic deficit].

Traumatic spondyloptosis is a serious injury usually caused by high-energy trauma; It consists of the anterior or posterior dislocation of 100% or more of the underlying vertebral body, which can become a total injury of the spinal cord, producing a neurological deficit; this type of injury represents stage 4 and 5 of Allen-Ferguson. A 50-year-old man who suffers a car accident, he receive frontal impact when he was a driver, colliding with the retaining wall, referred from another hospital to emergency room, managed with C7 hemicorpectomy, c7-t1 discectomy, spondylodesis with anterior plate (C6-T1), and posterior approach + Fascetectomies of C7-T1, facet joint screws C6 and transpedicular fixation of T1. Subaxial cervical spondyloptosis is relatively rare clinical entity, a complete clinical examination is important in diagnosis, taking in considerations the injury mechanism.

[Endovascular treatment of spinal dorsal intradural arteriovenous fistulas].

Background: The dorsal spinal intradural arteriovenous fistulas (DSIAF) are infrequent and complex injuries are underdiagnosed condition and disability. The aim is to present our experience in the endovascular management.

Methods: A retrospective and prospective study of patients with DSIAF treated by endovascular therapy (EVT) with n-butyl-cyanoacrylate during the period 2007-2013.