Reparative regeneration of a vertebra after modelling an extension fracture with adjacent disc involvement during external stable fixation with an apparatus

Abstract

A model of vertebral body fracture with adjacent disc involvement is worked out by the authors, using extension mechanism of producing injury. Roentgen-and-morphological dynamics of the fracture union during external stable fixation with an apparatus is studied, as well as condition of anatomical structures in the operated spinal part. It is demonstrated, that creation of optimal biomechanical conditions allows to avoid secondary displacement of the caudal-and-ventral fragment and achieve a partial bone union of vertebral body fragments after 21-28 days and a complete one - after 42 days due to endosteal osteogenesis. Besides, damaged intervertebral disc is flattened and fibrotized, and Schmorl hernia persists in the subchondral part of vertebra.