Parapedicular vertebral augmentation with polymethylmetacrylate for pedicle screw loosening. [PDF]
BMJ Case Rep, 2018 A 71-year-old man who had a L1/S1 posterior fusion revision surgery complained of increasing back pain 5 weeks after the open surgical procedure. The pain was initially estimated at 9/10 on the visual analog scale (VAS) and thought to be related to a right-sided L2 screw loosening.
Clerk-Lamalice O +4 more
europepmc +7 more sources
A new sensing paradigm for the vibroacoustic detection of pedicle screw loosening. [PDF]
Med Biol Eng ComputAbstract The current clinical gold standard to assess the condition and detect loosening of pedicle screw implants is radiation-emitting medical imaging. However, solely based on medical imaging, clinicians are not able to reliably identify loose implants in a substantial amount of cases.
Seibold M +8 more
europepmc +8 more sources
Can cavity-based pedicle screw augmentation decrease screw loosening? A biomechanical in vitro study [PDF]
European Spine Journal, 2020 AbstractPurposeIn an osteoporotic vertebral body, cement-augmented pedicle screw fixation could possibly be optimized by the creation of an initial cavity. The aim of this study is to compare three test groups with regard to their loosening characteristics under cyclic loading.MethodsEighteen human, osteoporotic spine segments were divided in three ...
Hans-Joachim Riesner +4 more
core +5 more sources
Comparison of Cortical Bone Trajectory to Pedicle-Based Dynamic Stabilization: An Analysis of 291 Patients [PDF]
Neurospine, 2023 Objective Pedicle-based dynamic stabilization (DS) has gained popularity outside of America. Although pedicle screw (PS) loosening has always been a concern, it is reportedly innocuous. Cortical bone trajectory (CBT) screw is an emerging option with less
Chih-Chang Chang +7 more
doaj +3 more sources
Size selection and placement of pedicle screws using robot-assisted versus fluoroscopy-guided techniques for thoracolumbar fractures: possible implications for the screw loosening rate [PDF]
BMC Surgery, 2022 Background There has been increased development of robotic technologies for the accuracy of percutaneous pedicle screw placement. However, it remains unclear whether the robot really optimize the selection of screw sizes and enhance screw stability.
Sheng-yang Du +7 more
doaj +2 more sources
Orthopaedic SurgeryObjective Osteoporosis is a crucial risk factor for screw loosening. Our studies indicate that the bone mineral density (BMD) in the screw trajectory is a better predictor of screw loosening than the BMD of the lumbar spine or the screw insertion ...
Zan Chen +4 more
doaj +2 more sources
Prediction of Screw Loosening After Dynamic Pedicle Screw Fixation With Lumbar Polyetheretherketone Rods Using Magnetic Resonance Imaging-Based Vertebral Bone Quality Score [PDF]
NeurospineObjective To investigate the correlation between magnetic resonance imaging-based vertebral bone quality (VBQ) score and screw loosening after dynamic pedicle screw fixation with polyetheretherketone (PEEK) rods, and evaluate its predictive value ...
Guozheng Jiang +15 more
doaj +3 more sources
The significance of radiolucent zones surrounding pedicle screws [PDF]
The Journal of Bone and Joint Surgery. British volume, 2004 We examined the radiographs from a prospective clinical study of fixation by pedicle screws and those from an experimental study in a sheep model. In the clinical study, instruments were removed from 21 patients after implantation for 11 to 16 months and the extraction torques of the screws were recorded.
B, Sandén +4 more
openaire +3 more sources
Global Spine Journal, 2019 Study Design: Retrospective cohort study. Objective: To determine risk factors that may affect the rate of pedicle screws loosening in patients with degenerative diseases of the lumbar spine.
Andrey Bokov +2 more
exaly +2 more sources
A novel pedicle screw design to maximize screw-bone interface strength using finite element analysis and design of experiment techniques [PDF]
Asian Spine JournalStudy Design Basic study. Purpose This study aimed to utilize finite element (FE) analysis and design of experiment (DoE) techniques to propose and optimize a novel pedicle screw design and compare its pull-out force with that of a control device ...
Arvind Kumar Prajapati +4 more
doaj +3 more sources