Immediate stabilization of pedicle screws : Preclinical pilot study of polymer-augmented pedicle screws
Abstract: This study was designed as proof of principle and safety test of the novel technique, the Immediate Stabilization System (ISS). The technique is designed to immediately stabilize polymer-augmented pedicle screws (PAS) in deficient bone and avoid complications of loosening pedicle screws at the bone-screw interface, especially in osteoporotic patients. A polymer sleeve was designed as augmentation to improve screw anchorage after drilling the screw hole. By applying ultrasonic energy, the polymeric tube was molded into the pores of the host bone forming a strong and uniform bond with the adjacent bone. The original screw was then implanted into the denser bony environment leading to an enhanced immediate stability. The ISS-treated implants were compared to conventionally placed pedicle screws in ex-vivo cadaver bones (2 sheep spines, n = 6 implants per spine, total 12 screws) and in-vivo in a spinal sheep model (Swiss alpine sheep, n = 5, 4 implants per animal, total 20 screws). The primary stability of ISS-treated pedicle screws was increased in ex-vivo bone (+24% insertion torque (IT)) and in-vivo (+32.9% IT) in sheep spine. Removal torque (RT) was lower in the in PAS tested for 8 weeks in-vivo. The ISS technology demonstrated improved anchorage of pedicle screws in ex-vivo cadaver bones as well as in-vivo studies in sheep spine.
- Location
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Deutsche Nationalbibliothek Frankfurt am Main
- Extent
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Online-Ressource
- Language
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Englisch
- Bibliographic citation
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Immediate stabilization of pedicle screws ; volume:9 ; number:1 ; year:2023 ; pages:13-16 ; extent:4
Current directions in biomedical engineering ; 9, Heft 1 (2023), 13-16 (gesamt 4)
- Creator
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Wild, Michael de
Zimmermann, Simon
Schlottig, Falko
Hasler, Carol
Klein, Karina
Steffen, Thomas
Rechenberg, Brigitte von
- DOI
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10.1515/cdbme-2023-1004
- URN
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urn:nbn:de:101:1-2023092214152447654300
- Rights
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
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14.08.2025, 10:46 AM CEST
Data provider
Deutsche Nationalbibliothek. If you have any questions about the object, please contact the data provider.
Associated
- Wild, Michael de
- Zimmermann, Simon
- Schlottig, Falko
- Hasler, Carol
- Klein, Karina
- Steffen, Thomas
- Rechenberg, Brigitte von
Other Objects (12)
Freehand power-assisted pedicle screw placement in scoliotic patients: results on 5522 consecutive pedicle screws
Patient satisfaction with implant removal after stabilization using percutaneous pedicle screws for traumatic thoracolumbar fracture
Pedicle screw anchorage of carbon fiber-reinforced PEEK screws under cyclic loading
Rescue augmentation: increased stability in augmentation after initial loosening of pedicle screws
Reduced cement volume does not affect screw stability in augmented pedicle screws
Reduced cement volume does not affect screw stability in augmented pedicle screws
Reduction and ring fixation of instable C1 fractures with monoaxial pedicle screws
Unilateral pedicle screws asymmetric tethering: an innovative method to create idiopathic deformity
Comparison of outcomes between cortical screws and traditional pedicle screws for lumbar interbody fusion: a systematic review and meta-analysis
Accuracy of Intraoperative Computed Tomography–Based Navigation for Placement of Percutaneous Pedicle Screws
Pullout strength of reinserted pedicle screws using the previous entry point and trajectory
Pullout strength of pedicle screws with cement augmentation in severe osteoporosis: A comparative study between cannulated screws with cement injection and solid screws with cement pre-filling
Freehand power-assisted pedicle screw placement in scoliotic patients: results on 5522 consecutive pedicle screws
Patient satisfaction with implant removal after stabilization using percutaneous pedicle screws for traumatic thoracolumbar fracture
Pedicle screw anchorage of carbon fiber-reinforced PEEK screws under cyclic loading
Rescue augmentation: increased stability in augmentation after initial loosening of pedicle screws
Reduced cement volume does not affect screw stability in augmented pedicle screws
Reduced cement volume does not affect screw stability in augmented pedicle screws
Reduction and ring fixation of instable C1 fractures with monoaxial pedicle screws
Unilateral pedicle screws asymmetric tethering: an innovative method to create idiopathic deformity
Comparison of outcomes between cortical screws and traditional pedicle screws for lumbar interbody fusion: a systematic review and meta-analysis
Accuracy of Intraoperative Computed Tomography–Based Navigation for Placement of Percutaneous Pedicle Screws
Pullout strength of reinserted pedicle screws using the previous entry point and trajectory
Pullout strength of pedicle screws with cement augmentation in severe osteoporosis: A comparative study between cannulated screws with cement injection and solid screws with cement pre-filling
Freehand power-assisted pedicle screw placement in scoliotic patients: results on 5522 consecutive pedicle screws
Patient satisfaction with implant removal after stabilization using percutaneous pedicle screws for traumatic thoracolumbar fracture
Pedicle screw anchorage of carbon fiber-reinforced PEEK screws under cyclic loading
Rescue augmentation: increased stability in augmentation after initial loosening of pedicle screws
Reduced cement volume does not affect screw stability in augmented pedicle screws
Reduced cement volume does not affect screw stability in augmented pedicle screws
Reduction and ring fixation of instable C1 fractures with monoaxial pedicle screws
Unilateral pedicle screws asymmetric tethering: an innovative method to create idiopathic deformity
Comparison of outcomes between cortical screws and traditional pedicle screws for lumbar interbody fusion: a systematic review and meta-analysis
Accuracy of Intraoperative Computed Tomography–Based Navigation for Placement of Percutaneous Pedicle Screws
Pullout strength of reinserted pedicle screws using the previous entry point and trajectory