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Biomechanical specimen assessment by low dose biplanar X-ray study of fusion constructions using a posterior lumbar cage with integrated anchors and posterior adjunctive fixators

Article dans une revue avec comité de lecture
Author
GENNARI, Antonio
1001017 Institut de Biomécanique Humaine Georges Charpak [IBHGC]
LANGLAIS, Tristan
1001017 Institut de Biomécanique Humaine Georges Charpak [IBHGC]
LITRICO, Stéphane
300113 Centre Hospitalier Universitaire de Nice [CHU Nice]
PERSOHN, Sylvain
1001017 Institut de Biomécanique Humaine Georges Charpak [IBHGC]
ALLAIN, Jérôme
107396 Chercheur indépendant
ccSKALLI, Wafa
1001017 Institut de Biomécanique Humaine Georges Charpak [IBHGC]

URI
http://hdl.handle.net/10985/20722
DOI
10.1080/10255842.2021.1966625
Date
2021
Journal
Computer Methods in Biomechanics and Biomedical Engineering

Abstract

The objective was to compare L4/5 range of motions of fusion constructs using anchored cages. Twelve human cadaveric spine were tested in intact condition, and divided into TLIF and PLIF groups. Testing consisted in applying pure moments in flexion-extension, lateral bending and axial rotation. The computation of intersegmental motion was assessed using 3 D biplanar radiographs. In TLIF group, the addition of contralateral transfacet decreased flexion-extension motion (39%; p = 0.036) but without difference with the ipsilateral pedicle screw construction (53%; p = 0.2). In PLIF group, the addition of interspinous anchor reduced flexion-extension motion (12%; p = 0.036) but without difference with the bilateral pedicle screw construction (17%; p = 0.8).

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