title: [Primary stability of 2 PLIF (posterior lumbar interbody fusion) techniques--a biomechanical and finite element analysis].
abstract: The purpose of this study was to compare the initial stiffness of two techniques for posterior interbody lumbar fusion by biomechanical and finite element analysis. Initial stiffness was tested under compression, torsion and shearing forces. The effect of an increasing initial stability by additional posterior instrumentation is proven by the biomechanical analysis and the finite element method.
authors.affiliation: Neurochirurgische Klinik, Universitätskliniken des Saarlandes, Homburg/Saar.
authors.forename: T
authors.initials: T
authors.lastname: Pitzen
authors.forename: D
authors.initials: D
authors.lastname: Matthis
authors.forename: H
authors.initials: H
authors.lastname: Müller-Storz
authors.forename: W
authors.initials: W
authors.lastname: Caspar
authors.forename: W I
authors.initials: WI
authors.lastname: Steudel
authors.forename: J
authors.initials: J
authors.lastname: Harms
mesh_terms: D001696:Biomechanical Phenomena; D003198:Computer Simulation; D020342:Finite Element Analysis; D006801:Humans; D008159:Lumbar Vertebrae / Q000503:physiopathology / Q000601:surgery*; D011183:Postoperative Complications / Q000503:physiopathology*; D013123:Spinal Fusion / Q000379:methods*; D016474:Weight-Bearing / Q000502:physiology