ArticleScientific reports2021
Correlation of bone density to screw loosening in dynamic stabilization: an analysis of 176 patients.
Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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Who cites it
16 citing papers in PubMed, 22 citations in OpenAlex.
- Effect of screw loosening on health-related quality of life following single-level posterior lumbar interbody fusion: a retrospective study in Japan.Asian spine journal · 2026Article
- Local fragility index and Radiomics-lite modeling of CT-Derived Hounsfield units for osteoporosis risk assessment in spine surgery patients.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
- A novel UHMWPE anchor for improving the pullout resistance of pedicle screws.Frontiers in bioengineering and biotechnology · 2026Article
- Risk factors for screw loosening following lumbar interbody fusion surgery in degenerative lumbar disease: a systematic review and meta-analysis.Asian spine journal · 2025Article
- Biomechanical Analysis and Mid-Term Clinical Outcomes of the Dynamic-Transitional Optima Hybrid Lumbar Device.Journal of clinical medicine · 2025Article
- The Bony Density of the Pedicle Plays a More Significant Role in the Screw Anchorage Ability Than Other Regions of the Screw Trajectory.Orthopaedic surgery · 2025Article
- Clinical Insights on Transforaminal Lumbar Interbody Fusion (TLIF) Implantations Following Spinal Fusion Surgery: Enhancing and Monitoring Bone Health in Patients.Orthopedic research and reviews · 2025Review
- The potential effect of romosozumab on perioperative management for instrumentation surgery.JOR spine · 2024Article
- Two-Stage Lumbar Dynamic Stabilization Surgery: A Comprehensive Analysis of Screw Loosening Rates and Functional Outcomes Compared to Single-Stage Approach in Osteopenic and Osteoporotic Patients.Diagnostics (Basel, Switzerland) · 2024Article
- Opportunistic prediction of osteoporosis in patients with degenerative lumbar diseases: a simplified T12 vertebral bone quality approach.Journal of orthopaedic surgery and research · 2024Article
- Impact of blade direction on postoperative femoral head varus in PFNA fixed patients: a clinical review and biomechanical research.Frontiers in bioengineering and biotechnology · 2024Article
- Nucleus high intensity in the T2-weighted MRI is a potential predictor of annulus tear in cervical injured patients: a case comparative study.BMC musculoskeletal disorders · 2023Article
- The impact of disease time, cervical alignment and range of motion on cervical vertebral Hounsfield unit value in surgery patients with cervical spondylosis.Journal of orthopaedic surgery and research · 2023Article
- Computed Tomography-Based Prediction of Lumbar Pedicle Screw Loosening.BioMed research international · 2023Article
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- Risk Factors Associated With Nonunion Following Periacetabular Osteotomy for Treatment of Symptomatic Hip Dysplasia.JB & JS open accessArticle
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Authors and funding
11 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Although osteoporosis has negative impacts on lumbar fusion, its effects on screw loosening in dynamic stabilization remain elusive. We aimed to correlate bone mineral density (BMD) with screw loosening in Dynesys dynamic stabilization (DDS). Consecutive patients who underwent 2- or 3-level DDS for spondylosis, recurrent disc herniations, or low-grade spondylolisthesis at L3-5 were retrospectively reviewed. BMD was assessed by the Hounsfield Unit (HU) in vertebral bodies (VB) and pedicles with and without cortical bone (CB) on pre-operative computed tomography (CT). Screw loosening was assessed by radiographs and confirmed by CT. HU values were compared between the loosened and intact screws. 176 patients and 918 screws were analyzed with 78 loosened screws found in 36 patients (mean follow-up: 43.4 months). The HU values of VB were similar in loosened and intact screws (p = 0.14). The HU values of pedicles were insignificantly less in loosened than intact screws (including CB: 286.70 ± 118.97 vs. 297.31 ± 110.99, p = 0.45; excluding CB: 238.48 ± 114.90 vs. 240.51 ± 108.91, p = 0.88). All patients had clinical improvements. In conclusion, the HU values, as a surrogate for BMD, were unrelated to screw loosening in DDS. Therefore, patients with compromised BMD might be potential candidates for dynamic stabilization rather than fusion.
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