Biomechanics of short-segment multi-rod posterior internal instrumental fixation of lumbar burst fractures: results of comparative three-dimensional finite element analysis

Rationale: An objective trend in modern spine trauma surgery is to provide the best conditions for recreating and maintaining normal biomechanics of the spinal column while reducing the length of fixation and the amount of surgical trauma. At the same time, the data on the biomechanical efficacy of the existing methods of short-segment pedicle spinal instrumentation are contradictory, which necessitates further experimental design and research.