Pedicle Screw Loosening Prediction in Patients with Degenerative Diseases of Lumbar Spine Using Bone Density Measured in Hounsfield Units

Unilateral versus bilateral pedicle screw fixation with posterior lumbar interbody fusion for lumbar degenerative diseases

BACKGROUND Both unilateral pedicle screw fixation with posterior lumbar interbody fusion (PLIF) and bilateral pedicle screw fixation with PLIF are used to treat lumbar degenerative diseases (LDD). However, which one is a better treatment for LDD remains considerable controversy. Therefore, the focus of this meta-analysis was to assess the merits and shortcomings of efficacy of these 2 surgical ...

Intraoperative biomechanics of lumbar pedicle screw loosening following successful arthrodesis.

Pedicle screw loosening has been implicated in recurrent back pain after lumbar spinal fusion, but the degree of loosening has not been systematically quantified in patients. Instrumentation removal is an option for patients with successful arthrodesis, but remains controversial. Here, we quantified pedicle screw loosening by measuring screw insertion and/or removal torque at high statistical p...

Correlation between Bone Mineral Density Measured by Dual-Energy X-Ray Absorptiometry and Hounsfield Units Measured by Diagnostic CT in Lumbar Spine

OBJECTIVE Use of quantitative computed tomography (CT) to evaluate bone mineral density was suggested in the 1970s. Despite its reliability and accuracy, technical shortcomings restricted its usage, and dual-energy X-ray absorptiometry (DXA) became the gold standard evaluation method. Advances in CT technology have reduced its previous limitations, and CT evaluation of bone quality may now be a...

Pedicle Screw Fixation in Fracture of Thoraco-lumbar Spine

The application of polyetheretherketone cage for lumbar fusion and the pedicle screw-based internal fixation in senile lumbar degenerative diseases

Objective: Our objective is to analyse the clinical effect and safety of Polyetheretherketone (PEEK) cage for lumbar fusion and the pedicle screw-based internal fixation in senile lumbar degenerative diseases, and further discuss the value of clinical application. Methods: 172 patients with senile lumber degenerative diseases admitted in our hospital during March, 2013-March, 2016 were selected...