Journal article
The Cortical Bone Trajectory for Lumbar Spine Fusion
Operative techniques in orthopaedics, Vol.27(4), pp.269-274
12/01/2017
DOI: 10.1053/j.oto.2017.09.011
Abstract
Cortical bone trajectory, also called cortical screw trajectory, is a novel, less invasive fusion alternative for disorders affecting the lumbar spine. Cortical screw constructs have several touted advantages over traditional pedicle screw constructs. First, the surgical exposure required for instrumentation placement is less than that required for traditional pedicle screw placement. This reduced exposure can help reduce blood loss and other approach-related morbidity. Second, the unique screw trajectory, along with a cortically threaded screw, allows for increased cortical bone purchase within the lamina and pedicle. This improved bone purchase can result in improved screw pullout strength, and possibly reduce the chance of screw loosening. Finally, cortically placed screw heads rest on top of the vertebral lamina, which is significantly more medial than traditional pedicle screws, making them more accessible and rod placement more straightforward. Cortical bone trajectory has been validated with several biomechanical cadaveric studies and shows promise with early clinical testing. The cortical screw trajectory may provide patients with lumbar spine pathology a less invasive fusion alternative. This article serves to describe the operative technique and provides a current review of the literature. (C) 2017 Elsevier Inc. All rights reserved.
Details
- Title: Subtitle
- The Cortical Bone Trajectory for Lumbar Spine Fusion
- Creators
- Daniel L. Shepherd - Mayo Clinic Neuro-Informatics Laboratory, Rochester, MNMohammed Ali Alvi - Mayo Clinic Neuro-Informatics Laboratory, Rochester, MNMeghan E. Murphy - Mayo Clinic Neuro-Informatics Laboratory, Rochester, MNPanagiotis Kerezoudis - Mayo Clinic Neuro-Informatics Laboratory, Rochester, MNFrank Corl - Department of Medical Illustration/Animation, Mayo Clinic, Rochester, MNPatrick W. Hitchon - University of IowaAhmad Nassr - Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN.Mohamad Bydon - Mayo Clinic Neuro-Informatics Laboratory, Rochester, MN
- Resource Type
- Journal article
- Publication Details
- Operative techniques in orthopaedics, Vol.27(4), pp.269-274
- Publisher
- Elsevier
- DOI
- 10.1053/j.oto.2017.09.011
- ISSN
- 1048-6666
- eISSN
- 1558-3848
- Number of pages
- 6
- Language
- English
- Date published
- 12/01/2017
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Neurosurgery
- Record Identifier
- 9984303909502771
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