Journal article
Pull-out strength of pedicle hooks with fixation screws: influence of screw length and angulation.
- Berlemann U M.E. Müller Institute for Biomechanics, University of Bern, Switzerland.
- Cripton PA
- Rincon L
- Nolte LP
- Schläpfer F
- 1996-01-01
Published in:
- 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. - 1996
Bone Screws
Cadaver
Equipment Design
Humans
Internal Fixators
Male
Middle Aged
Stress, Mechanical
Thoracic Vertebrae
English
The pull-out force of thoracic spinal pedicle hooks secured by long fixation screws engaging the posterior portion of the vertebral endplate was measured. The performance of these hooks was compared with that of hooks using a shorter screw and different screw orientation such that the vertebral endplates were not perforated. The longer and differently angulated screws, engaging the endplate, significantly enhanced the fixation potential of the hooks.
- Language
-
- English
- Open access status
- closed
- Identifiers
-
- DOI 10.1007/bf00307831
- PMID 8689420
- Persistent URL
- https://sonar.ch/global/documents/237556
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