Biomechanical evaluation of fixation strength among different sizes of pedicle screws using the cortical bone trajectory: what is the ideal screw size for optimal fixation?

Acta neurochirurgica
Keitaro MatsukawaKazuhiro Chiba

Abstract

The cortical bone trajectory (CBT) has attracted attention as a new minimally invasive technique for lumbar instrumentation by minimizing soft-tissue dissection. Biomechanical studies have demonstrated the superior fixation capacity of CBT; however, there is little consensus on the selection of screw size, and no biomechanical study has elucidated the most suitable screw size for CBT. The purpose of the present study was to evaluate the effect of screw size on fixation strength and to clarify the ideal size for optimal fixation using CBT. A total of 720 analyses on CBT screws with various diameters (4.5-6.5 mm) and lengths (25-40 mm) in simulations of 20 different lumbar vertebrae (mean age: 62.1 ± 20.0 years, 8 males and 12 females) were performed using a finite element method. First, the fixation strength of a single screw was evaluated by measuring the axial pullout strength. Next, the vertebral fixation strength of a paired-screw construct was examined by applying forces simulating flexion, extension, lateral bending, and axial rotation to the vertebra. Lastly, the equivalent stress value of the bone-screw interface was calculated. Larger-diameter screws increased the pullout strength and vertebral fixation strength and dec...Continue Reading

References

Nov 1, 1994·Spine·T L HalvorsonS D Cook
Aug 1, 1994·Spine·A G BrantleyK R Clark
May 21, 1998·Journal of Biomechanics·J H KeyakH B Skinner
Jun 30, 2001·Clinical Biomechanics·Shing-Sheng WuHansen A. Yuan
Jan 28, 2005·The Journal of Prosthetic Dentistry·Ahmad MahmoudTakashi Ohyama
Jul 19, 2005·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Ching-Chi HsuJinn Lin
Sep 16, 2008·The Spine Journal : Official Journal of the North American Spine Society·B G SantoniC M Puttlitz
Feb 23, 2013·Journal of Spinal Disorders & Techniques·Keitaro MatsukawaKoichi Nemoto
Aug 8, 2014·Spine·Daniel A BaluchAvinash G Patwardhan
Jan 17, 2015·Journal of Neurosurgery. Spine·Masaki UenoMasashi Takaso
Mar 3, 2015·The Spine Journal : Official Journal of the North American Spine Society·Gun Woo LeeJin S Yeom

❮ Previous
Next ❯

Citations

Aug 25, 2016·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Jun XuanXiang-Yang Wang
May 22, 2018·Clinical Spine Surgery : a Spine Publication·Hai GaoCailiang Shen
Apr 18, 2018·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Nicola MarengoDiego Garbossa
Sep 1, 2017·JBJS Reviews·I David KayeAlan S Hilibrand
Feb 3, 2020·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Jie WuZheng Guo
May 16, 2019·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Jizhou WangTianwei Sun
Jul 16, 2020·BMC Musculoskeletal Disorders·Che-Wei LiuShang-Chih Lin
Nov 27, 2017·Spine Surgery and Related Research·Keitaro Matsukawa, Yoshiyuki Yato
Jan 20, 2021·Scientific Reports·Tomoyo Y IrieNozomu Inoue
Mar 30, 2021·Frontiers in Bioengineering and Biotechnology·Marco SensaleEnrico Dall'Ara
Jun 1, 2021·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·José M SpirigMazda Farshad
Apr 26, 2020·Journal of Clinical Neuroscience : Official Journal of the Neurosurgical Society of Australasia·Salvatore PetroneDiego Garbossa

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.