BACKGROUND CONTEXT: Traditional reconstruction for burst @entity174 involves columnar support with posterior fixation at one or two levels cephalad/caudad; however, some surgeons choose to only stabilize the vertebral column. PURPOSE: The aim was to distinguish biomechanical differences in stability between a @entity174 stabilized through a lateral approach using corpectomy spacers of different end plate sizes with and without integrated screws and with and without posterior fixation. STUDY DESIGN/SETTING: This was an in  vitro biomechanical study assessing thoracolumbar @entity174 stabilization. METHODS: Six @entity1 spines (T11-L3) were tested on a six-degrees-of-freedom simulator enabling unconstrained range of motion (ROM) at   6 N  m in flexion-extension (FE), lateral bending (LB), and @entity717 ( @entity717 ) after a simulated @entity174 at L1. Expandable corpectomy spacers with/without integrated screws (Fi/F; FORTIFY Integrated/FORTIFY; Globus Medical, Inc., Audubon, PA, USA) were tested with different end plate sizes (21*23 mm, 22*40-50 mm). Posterior instrumentation (PI) via bilateral pedicle screws and rods was used one level above and one level below the @entity174 . Lateral plate (LP) fixation was tested. Devices were tested in the following order: intact; Fi21*23; Fi21*23+PI; F21*23+PI+LP; F21*23+LP; F22*40-50+LP; F22*40-50+PI+LP; Fi22*40-50+PI; Fi22*40-50. RESULTS: In FE and @entity717 , constructs without PI showed no significant difference (p<.05) in stability compared with intact. In LB, F22*40-50+LP showed a significant increase in stability relative to intact, but no other construct without PI reached significance. In FE and LB, circumferential constructs were significantly more stable than intact. In @entity717 , no construct showed significant differences in motion when compared with the intact condition. CONCLUSIONS: Constructs without posterior fixation were the least stable of all tested constructs. Circumferential fixation provided greater stability in FE and LB than lateral fixation and intact. @entity717 showed no significant differences in any construct compared with the intact state.

Is lateral stabilization enough in thoracolumbar XXXX reconstruction? A biomechanical investigation.

@entity1 :: ('9606', 'Species') :: ['human'] @entity717 :: ('MESH:D009069', 'Disease') :: ['axial rotation', 'AR', 'Axial rotation'] @entity174 :: ('MESH:D050723', 'Disease') :: ['fractures', 'burst fracture']
@entity174 :: (MESH:D050723,Disease) :: ['burst fracture']
