ArticleNeurospine2023
Screw Insertional Torque Measurement in Spine Surgery: Correlation With Bone Mineral Density and Hounsfield Unit.
Article in Neurospine, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
11 citing papers in PubMed, 9 citations in OpenAlex.
- Multifactorial prediction of mechanical complications after lumbar fusion using bone quality and turnover markers.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 · 2026Article
- Hounsfield unit measurements from different regions of interest in lumbar spine CT: correlation with DEXA-derived bone mineral density and fracture status.BMC musculoskeletal disorders · 2026Article
- Influence of Lateral Perforation on the Biomechanical Stability of Thoracic Pedicle Screws.Global spine journal · 2026Article
- A clinically applicable energy-based approach for evaluating bone strength.Bone & joint research · 2026Article
- Response to Letter to the Editor for "Femoral Bone Mineral Density Shows Stronger Correlation With Pedicle Screw Insertional Torque than Lumbar Bone Mineral Density or Hounsfield Units: A Retrospective in Vivo Study".Global spine journal · 2026Article
- 3D printing enabled biomechanical evaluation of a novel expandable wedge spacer for atlantoaxial reduction.3D printing in medicine · 2026Article
- Does Resistance Indicate Malposition? A Standardized Comparison of Pedicle Screw Placement.Bioengineering (Basel, Switzerland) · 2025Article
- Article
- Ageing and BMI in Focus: Rethinking Risk Assessment for Vertebral Fragility and Pedicle Screw Loosening in Older Adults.Journal of clinical medicine · 2025Article
- Comparative analysis of 3D CT values for different lumbar pedicle screw trajectories.Journal of orthopaedic surgery and research · 2025Article
- Visuohaptic Feedback in Robotic-Assisted Spine Surgery for Pedicle Screw Placement.Journal of clinical medicine · 2025Article
Corrections and comments
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Authors and funding
8 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveAchieving successful fusion during spine surgery is dependent on rigid pedicle screw fixation. To assess fixation strength, the insertional torque can be measured during intraoperative screw fixation. This study aimed to explore the technical feasibility of measuring the insertional torque of a pedicle screw, while investigating its relationship with bone density.
methodsThoraco-lumbar screw fixation fusion surgery was performed on 53 patients (mean age, 65.5 ± 9.8 years). The insertional torque of 284 screws was measured at the point passing through the pedicle using a calibrated torque wrench, with a specially designed connector to the spine screw system. The Hounsfield units (HU) value was determined by assessing the trabecular portion of the index vertebral body on sagittal computed tomography images. We analyzed the relationship between the measured insertional torque and the following bone strength parameters: bone mineral density (BMD) and HU of the vertebral body.
resultsThe mean insertion torque was 105.55 ± 58.08 N∙cm and T-score value (BMD) was -1.14 ± 1.49. Mean HU value was 136.37 ± 57.59. Screw insertion torque was positively correlated with BMD and HU in whole patients. However, in cases of osteopenia, all variables showed very weak correlations with insertional torque. In patients with osteoporosis, there was no statistically significant correlation between BMD and torque strength; HU showed a significant correlation.
conclusionThe insertional torque of screw fixation significantly correlated with bone density (BMD and HU). HU measurements showed greater clinical significance than did BMD values in patients with osteoporosis.
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