The state of segmental kyphosis of operated segment after anterior subaxial cervical fusion using different types of stabilizing systems

Abstract

Objective. To analyze the stability of anterior subaxial fusion in patients with various osteoligamentous lesions of the cervical spine with different types of stabilizing systems.Materials and methods. We have performed the analysis of the X-ray data of 80 patients with traumatic lesion of the cervical spine. As a criterion for the fusion stability, the segmental kyphosis index of the operated segment was used. The patients were divided into 2 groups, depending on the type of implanted fusion system. Each group was divided into subgroups according to Argenson et al. cervical spine lesion classification. The follow-up included the period before surgery, intraoperative period, 3-5 days after surgery, 3, 6 and 12-18 months after surgical treatment.Results. Our study revealed the statistically significant advantage of telescopic implant fusion system at a follow-up of 3 months for B and C Argenson type fractures. Starting from 6 months after the operation and further, with all types of lesion, the vertebral body replacement system provides greater stability in comparison with combination of the Mesh and ventral plate.Conclusions. The usage of a telescopic vertebral body replacement implant provides maximum preservation of the achieved correction of the segmental kyphosis of operated segment in patients with different types of fractures.