Zimmermann, Simon

Profilbild
E-Mail-Adresse
Geburtsdatum
Projekt
Organisationseinheiten
Berufsbeschreibung
Nachname
Zimmermann
Vorname
Simon
Name
Zimmermann, Simon

Filter

20231
Filter zurücksetzen

Einstellungen

Enddatum: 2023 × Anfangsdatum: 2020 ×

Suchergebnisse

Gerade angezeigt 1 - 1 von 1
  • Vorschaubild
    Publikation
    Immediate stabilization of pedicle screws
    (De Gruyter, 2023) de Wild, Michael; Zimmermann, Simon; Klein, Karina; Steffen, Thomas; Schlottig, Falko; Hasler, Carol; Rechenberg, Brigitte von [in: Current Directions in Biomedical Engineering]
    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.
    01A - Beitrag in wissenschaftlicher Zeitschrift