ArticleFrontiers in bioengineering and biotechnology2024
Comparison of biomechanical effects of polyetheretherketone (PEEK) rods and titanium rods in lumbar long-segment instrumentation: a finite element study.
Article in Frontiers in bioengineering and biotechnology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Evaluation of Screw Loosening in Patients Undergoing Semi-rigid Stabilization with Polyetheretherketone (PEEK) Rods.Indian journal of orthopaedics · 2026Article
- Effectiveness of Hybrid Surgery Using Polyetheretherketone Rods for Preventing Proximal Junctional Kyphosis and Failure After Adult Spinal Deformity Surgery: Biomechanical Evaluation.Scientific reports · 2026Article
- Progress and Challenges in Joining for Precision Endoscope Fabrication.Sensors (Basel, Switzerland) · 2026Review
- Carbon fiber-reinforced polyetheretherketone spinal instrumentation in pediatric spinal tumors: report of two cases and review of the literature.Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery · 2026Review
- Treatment of degenerative lumbar spine diseases with percutaneous PEEK rod and UBE: Four case reports.Medicine · 2025Article
- Finite element analysis of pedicle screw fixation biomechanics and adjacent segment degeneration in varied bone conditions.Scientific reports · 2025Article
- Biomechanical effects of screw loosening after lumbar PEEK rod and titanium rod fixation: a finite element analysis.Frontiers in bioengineering and biotechnology · 2025Article
- Quantitative relationships between elastic modulus of rod and biomechanical properties of transforaminal lumbar interbody fusion: a finite element analysis.Frontiers in bioengineering and biotechnology · 2024Article
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7 authors.
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Abstract
Introduction: Polyetheretherketone (PEEK) lumbar fusion rods have been successfully used in short-segment posterior instrumentation to prevent adjacent segment degeneration. However, limited studies have reported their application in lumbar long-segment instrumentation. This study aimed to compare the biomechanical performances of PEEK rods and titanium rods in lumbar long-segment instrumentation using finite element (FE) models, with the expectation of providing clinical guidance. Methods: A lumbar FE model (A) and four lumbar fixation FE models (BI, CI, BII, CII) of the L1-S1 vertebral body were developed using CT image segmentation (A: intact model; BI: intact model with L2-S1 PEEK rod internal fixation; CI: intact model with L2-S1 titanium rod internal fixation; BII: intact model with L3-S1 PEEK rod internal fixation; CII: intact model with L3-S1 titanium rod internal fixation). A 150-N preload was applied to the top surface of L1, similar to the intact model. The stresses on the lumbar intervertebral disc, facet joint, pedicle screws, and rods were calculated to evaluate the biomechanical effect of the different fixation procedures in lumbar long-segment instrumented surgery. Results: Under the four physiological motion states, the average stresses on the adjacent segment intervertebral disc and facet joint in all fixation models were greater than those in the intact model. Furthermore, the average stresses on the adjacent segment intervertebral disc and facet joint were greater in models CI and CII than in models BI and BII, respectively. The average stresses on the pedicle screws and rods were decreased in models BI and BII compared with models CI and CII under the four physiological motion states, respectively. Discussion: The PEEK rod internal fixation system may have better biomechanical properties than the titanium rod internal fixation system in delaying adjacent segment degeneration, improving the lumbar function of postoperative patients, and reducing the risk of screw loosening and breakage in lumbar long-segment instrumentation.
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