ArticleInternational journal of spine surgery2023
Biomechanical Comparison Between Posterior Long-Segment Fixation, Short-Segment Fixation, and Short-Segment Fixation With Intermediate Screws for the Treatment of Thoracolumbar Burst Fracture: A Finite Element Analysis.
Article in International journal of spine surgery, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 13 citations in OpenAlex.
- Intermediate screw placement improves initial radiographic alignment but not clinical outcomes following long-segment fixation for thoracolumbar fractures.Ulusal travma ve acil cerrahi dergisi = Turkish journal of trauma & emergency surgery : TJTES · 2026Article
- Minimally invasive surgical techniques for the treatment of thoracolumbar burst fractures.Journal of clinical orthopaedics and trauma · 2026Review
- A New Technique for Placing Pedicle Screws Into Bone Cement-Strengthened Vertebrae Involving Drilling and Melting.Orthopaedic surgery · 2026Article
- Application of the pivot forward combined leveraging technique in the treatment of thoracolumbar fractures: a finite element analysis and clinical study.Frontiers in surgery · 2026Article
- Enhancing long-term fixation in thoracolumbar injuries: From screw design to bone quality optimization.World journal of orthopedics · 2025Article
- Finite element analysis of short-segment fixation combined with expandable polyetheretherketone vertebral body replacement in osteoporotic vertebrae.BMC musculoskeletal disorders · 2025Article
- Factors that influence long term instrumentation stability in patients with unstable thoracolumbar injuries.World journal of orthopedics · 2025Article
- Lower C2 slope and milder uncovertebral joint degeneration are risk factors for pseudarthrosis after single-level anterior cervical corpectomy and fusion (ACCF): retrospective study of 102 patients with minimum 2-year follow-up.Journal of orthopaedic surgery and research · 2025Article
- Analysis of factors associated with the failure of treatment in thoracolumbar burst fractures treated with short-segment posterior spinal fixation.Journal of orthopaedic surgery and research · 2023Article
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Authors and funding
8 authors at 5 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundPosterior long-segment (LS) fixation, short-segment (SS) fixation, and short segment fixation with intermediate screws (SI) have shown good outcomes for the treatment of thoracolumbar burst fractures. However, limited data compared the biomechanical properties between LS fixation and SI. The purpose of this study was to compare the von Mises stresses on the pedicular screw system and bone between posterior LS fixation, SS fixation, and SI for the treatment of thoracolumbar burst fracture. MATERIALS AND
methodsThe finite element model of thoracolumbar spines from T11 to L3 was created based on the computed tomography image of a patient with a burst fracture of the L1 vertebral body. The models of pedicular screws, rods, and locking nuts were constructed based on information from the manufacturer. Three models with different fixation configurations-that is, LS, SS, and SI-were established. The axial load was applied to the superior surface of the model. The inferior surface was fixed. The stress on each screw, rod, and vertebral body was analyzed.
resultsThe motion of the spine in SS (0.5 mm) and SI (0.9 mm) was higher than in LS (0.2 mm). In all models, the lowest pedicle screws are the most stressed. The stress along the connecting rods was comparable between SI and LS (50 MPa). At the fracture level, stress was found at the pedicles and vertebral bodies in SI. There was relatively little stress around the fractured vertebral body in LS and SS.
conclusionsPosterior SI preserves more spinal motion than the LS. In addition, it provides favorable biomechanical properties than the SS. The stress that occurred around the pedicle screws in SI was the least among the 3 constructs, which might reduce complications such as implant failure. SI produces more stress in the fractured vertebral body than LS and SS, which could potentially aid in bone healing according to the Wolff law. CLINICAL RELEVANCE: SI has proved to be a biomechanically favorable construct and helps preserve the spinal motion segment. It could be an alternative surgical option for treating patients who present with thoracolumbar burst fractures. LEVEL OF EVIDENCE: 5:
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