Pedicle screw anchorage of carbon fiber-reinforced PEEK screws under cyclic loading.

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
Richard A LindtnerWerner Schmoelz

Abstract

Pedicle screw loosening is a common and significant complication after posterior spinal instrumentation, particularly in osteoporosis. Radiolucent carbon fiber-reinforced polyetheretherketone (CF/PEEK) pedicle screws have been developed recently to overcome drawbacks of conventional metallic screws, such as metal-induced imaging artifacts and interference with postoperative radiotherapy. Beyond radiolucency, CF/PEEK may also be advantageous over standard titanium in terms of pedicle screw loosening due to its unique material properties. However, screw anchorage and loosening of CF/PEEK pedicle screws have not been evaluated yet. The aim of this biomechanical study therefore was to evaluate whether the use of this alternative nonmetallic pedicle screw material affects screw loosening. The hypotheses tested were that (1) nonmetallic CF/PEEK pedicle screws resist an equal or higher number of load cycles until loosening than standard titanium screws and that (2) PMMA cement augmentation further increases the number of load cycles until loosening of CF/PEEK screws. In the first part of the study, left and right pedicles of ten cadaveric lumbar vertebrae (BMD 70.8 mg/cm3 ± 14.5) were randomly instrumented with either CF/PEEK or stand...Continue Reading

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Citations

Mar 5, 2021·Global Spine Journal·Jie WuZheng Guo
Jun 17, 2020·World Neurosurgery·Parthik D PatelAlexander R Vaccaro
Apr 23, 2021·The Spine Journal : Official Journal of the North American Spine Society·Daniel M SciubbaUNKNOWN NASS Spine Oncology Committee
May 11, 2021·The Spine Journal : Official Journal of the North American Spine Society·Zach PenningtonDaniel M Sciubba
May 20, 2020·Clinical Spine Surgery : a Spine Publication·Jake M McDonnellJoseph S Butler
Aug 4, 2021·Der Unfallchirurg·M PishnamazP Kobbe
Dec 24, 2020·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·Hans-Joachim RiesnerHans-Joachim Wilke
Aug 26, 2021·Heliyon·Nikhil K Murthy, Jean-Paul Wolinsky
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Aug 24, 2020·Clinical Oncology : a Journal of the Royal College of Radiologists·A LoblawV Misra

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