Objective: To ascertain whether augmentation pedicle screw fixation with polymethylmethacrylate (PMMA) can enhance the stability of unstable thoracolumbar burst fractures of osteoporotic spine.
Methods: Six fresh frozen female osteoporotic spines (T10-L5) were harvested and an anterior and posterior column unstable model of L1 was made. Each specimen was fixated with plate and the stability test were performed by flexion, extension, axial rotation and lateral bending. The test of fatigue was done with MTS 858. The tests were repeated after screws were augmented with PMMA. To compare the biomechanical stability of 6 different conditions: a. normal specimens (control), b. defect model fixed with plate, not augmented and not fatigued, c. after fatigued, not augmented, d. screws augmented with PMMA, not fatigued, e. after augmented and fatigued.
Results: In b., d. and e. conditions, the ranges of motion (ROM) were 6.23 +/- 1.56, 4.49 +/- 1.00, 4.46 +/- 1.83 in flexion and 6.60 +/- 1.80, 4.41 +/- 0.82, 4.46 +/- 1.83 in extension. There was no significant difference (P > 0.05), they were significantly smaller than those in a. and c. conditions (8.75 +/- 1.88, 1.47 +/- 2.25 and 8.92 +/- 2.97, 12.24 +/- 3.08) (P < 0.01).
Conclusion: The results demonstrated that augmentation pedicle screws fixation with PMMA can increase the stability of osteoporotic spine.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Vertebral augmentation plus pedicle screw fixation versus vertebral augmentation alone in the treatment of osteoporotic thoracolumbar fractures: A Meta-analysis.
World Neurosurg
January 2025
Department of Orthopaedics, Binhai Hospital of Tianjin Medical University General Hospital, Tianjin 300480, China.
Background: This meta-analysis was conducted to compare the efficacy and safety of vertebral augmentation (VA) plus pedicle screw fixation (PSF) with VA for treating osteoporotic thoracolumbar fractures (OTLFs).
Methods: A comprehensive search was conducted in PubMed, Embase, Cochrane Library and China National Knowledge Infrastructure (CNKI) to identify studies comparing PSF+VA with VA for treating OTLF. The primary outcomes were operation time, blood loss, length of stay, visual analogue scale (VAS) score, Oswestry disability index (ODI), Cobb angle, anterior vertebral height (AVH), bone cement leakage, secondary fracture and other adverse events.
Vascularized Iliac Crest Bone Graft for the Reconstruction of Anterior Vertebral Corpus Defects: A Literature Review and Cadaveric Feasibility Study.
Plast Reconstr Surg Glob Open
January 2025
From the Division of Plastic Surgery, Mayo Clinic, Phoenix, AZ.
Background: Vertebral body defects pose a significant challenge in spinal reconstructive surgery. Compression fractures of the vertebral corpus are typically treated with vertebral augmentation procedures. There are significant risks associated with the introduction of foreign material in the spine, including infection and pseudarthrosis.
View Article and Find Full Text PDFMinimally invasive prone lateral retropleural or retroperitoneal antepsoas approach spinal surgery using the rotatable radiolucent Jackson table.
J Spine Surg
December 2024
Department of Orthopedic Surgery, Chung Shan Hospital, Taipei, Taiwan.
Background: Prone lateral spinal surgery for simultaneous lateral and posterior approaches has recently been proposed to facilitate surgical room efficiency. The purpose of this study is to evaluate the feasibility and outcomes of minimally invasive prone lateral spinal surgery using a rotatable radiolucent Jackson table.
Methods: From July 2021 to June 2023, a consecutive series of patients who received minimally invasive prone lateral spinal surgery for various etiologies by the same surgical team were reviewed.
Augmented Reality Navigation System Enhances the Accuracy of Spinal Surgery Pedicle Screw Placement: A Randomized, Multicenter, Parallel-Controlled Clinical Trial.
Orthop Surg
January 2025
Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Objective: The pedicle screw insertion technique has evolved significantly, and despite the challenges of precise placement, advancements like AR-based surgical navigation systems now offer enhanced accuracy and safety in spinal surgery by integrating real-time, high-resolution imaging with virtual models to aid surgeons. This study aims to evaluate the differences in accuracy between novel AR-guided pedicle screw insertion and conventional surgery techniques.
Methods: A randomized controlled trial was conducted from March 2019 to December 2023 to compare the efficacy of AR-guided pedicle screw fixation with conventional freehand surgery using CT guidance.
The Risk of Intravenous Cement Leakage and Short-term Outcomes of Selective Cement-augmented Pedicle Screws: A Multicenter Retrospective Study.
Clin Spine Surg
December 2024
Department of Orthopaedic Surgery, Keio University School of Medicine, Shinjyuku, Tokyo.
Study Design: Multicenter retrospective cohort study.
Objective: To evaluate the efficacy and safety of using cement-augmented pedicle screw (CAPS) fixation only for the cephalad and caudal vertebral bodies.
Summary Of Background Data: Pedicle screw fixation is less effective in patients with low-quality bone.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!