Biomechanics of high-grade spondylolisthesis with and without reduction

Autor: Stefan Parent, Hubert Labelle, Wenhai Wang, Carl-Eric Aubin, George R. Baran, Pierre Jean Arnoux, Patrick J. Cahill
Přispěvatelé: Temple University [Philadelphia], Pennsylvania Commonwealth System of Higher Education (PCSHE), CHU Sainte Justine [Montréal], Shriners Hospitals for Children [Boston], Laboratoire de Biomécanique Appliquée (LBA UMR T24), Aix Marseille Université (AMU)-Université Gustave Eiffel
Jazyk: angličtina
Rok vydání: 2016
Předmět:
medicine.medical_specialty
COMPUTER SIMULATION
medicine.medical_treatment
Biomedical Engineering
Lumbar vertebrae
SPONDYLOLISTHESIS REDUCTION
ADOLESCENT
PRESSURE
03 medical and health sciences
BIOMECANIQUE
0302 clinical medicine
FINITE ELEMENT METHOD
HIGH-GRADE SPONDYLOLISTHESIS
LUMBAR VERTEBRAE
Medicine
Displacement (orthopedic surgery)
MOELLE EPINIERE
Reduction (orthopedic surgery)
SPONDYLOLISTHESIS
Orthodontics
030222 orthopedics
BALANCED/UNBALANCED PELVIS
CORPS HUMAIN
business.industry
Biomechanics
HUMANS
medicine.disease
Spinal column
BIOMECHANICAL PHENOMENA
[INFO.INFO-MO]Computer Science [cs]/Modeling and Simulation
Spondylolisthesis
Computer Science Applications
Surgery
FEMALE
SPINE BIOMECHANICS
medicine.anatomical_structure
SIMULATION NUMERIQUE
SPINAL FUSION
FEMME
METHODE DES ELEMENTS FINIS
Spinal fusion
Lumbosacral angle
COLONNE VERTEBRALE
FINITE ELEMENT ANALYSIS
[SDV.IB]Life Sciences [q-bio]/Bioengineering
business
030217 neurology & neurosurgery
Zdroj: Medical and Biological Engineering and Computing
Medical and Biological Engineering and Computing, Springer Verlag, 2016, pp.619-628. ⟨10.1007/s11517-015-1353-0⟩
ISSN: 0140-0118
1741-0444
DOI: 10.1007/s11517-015-1353-0⟩
Popis: International audience; The clinical advantages of reducing spondylolisthesis over fusion in situ have several intuitive reasons such as restore the spinal column into a more anatomic relationship and alignment. However, there is only little evidence in the literature supporting the theoretical advantages of reduction, and its effect on spinopelvic alignment remains poorly defined. In this study, a comprehensive finite element model was developed to analyze the biomechanics of the spine after spinal fusion at L5-S1 in both types of high-grade spondylolisthesis (balanced and unbalanced pelvis). The relevant clinical indices (i.e. spondylolisthesis gradeand Dubousset lumbosacral angle), the displacement of L4-L5, pressure within the annulus and nucleus, and stress at L4-L5 were evaluated and compared. The model can well predict the changes of the important clinical indices during the surgery. For a balanced pelvis, the reduction has a minimal effect on the biomechanical conditions at the adjacent level during postsurgical activities. In the unbalanced case, reduction induced larger deformation in the lumbosacral region and a higher stress concentration at adjacent level. Whether such a stress concentration can lead to long-term disc degeneration is not known. The results provide additional information for the clinician considering reduction of high-grade spondylolisthesis.
Databáze: OpenAIRE
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