Abstract
Inertial measurement units (IMUs) are microelectromechanical systems used to track orientation and motion. To use instruments mounted with IMUs in combination with a 3- and 2-dimensional (3D/2D) rendering of the computed-tomography scan (CT) to guide implantation of pedicle screws. Pedicle screws were implanted from T1 to S1 in 2 human cadavers. A software application enabled the surgeon to select the starting points and trajectories on a 3D/2D image of the spine, then locate these starting points on the exposed spine and apply the IMU-mounted instruments to reproduce the trajectories. The position of the screws was evaluated on the postoperative CT scan. A total of 72 pedicle screws were implanted. Thirty-seven (77%) of the thoracic screws were within the pedicle (Heary I), 7 (15%) showed a lateral breach of the pedicle, and 4 (8%) violated the anterior or lateral vertebral body (Heary III). In the lumbar spine and S1, 21 screws (88%) were within the pedicle (Gertzbein 0), 2 (8%) screws had a pedicle wall breach < 2 mm (Gertzbein 1), and 1 > 2 to < 4 mm (Gertzbein 2). In the second cadaver, the position was compared to the intraoperatively shown virtual position. The median offset was 3°(mean 3° ± 2°, variance 5, range 0°-9°) ...Continue Reading
References
Jan 1, 1990·Spine·S D Gertzbein, S E Robbins
Apr 9, 2004·Journal of Neurosurgery·Robert F HearyMargaret Black
Jul 3, 2007·The Spine Journal : Official Journal of the North American Spine Society·Kadir Kotil, Turgay Bilge
Jul 27, 2007·Medical & Biological Engineering & Computing·Daniele GiansantiVelio Macellari
Dec 19, 2007·Medical & Biological Engineering & Computing·Andrea Giovanni CuttiRinaldo Sacchetti
Nov 17, 2009·Medical & Biological Engineering & Computing·Alberto FerrariAngelo Davalli
Mar 3, 2010·Journal of Neurosurgery. Spine·Vincenzo AmatoClaudio Corona
Oct 5, 2010·Journal of Neurosurgery. Spine·Cary IdlerJosef E Gorek
Dec 15, 2010·Neurosurgery·Scott L ParkerTimothy F Witham
Feb 22, 2011·Journal of Neurosurgery. Spine·Husam AlhabibRichard Fox
Sep 9, 2011·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·Ioannis D GelalisTheodoros A Xenakis
Jun 19, 2012·The Journal of Arthroplasty·Denis NamDavid J Mayman
Jun 26, 2012·Journal of Neurosurgery. Spine·Benjamin J ShinRoger Härtl
Apr 16, 2014·Spine·Jimmy VillardFlorian Ringel
Feb 17, 2015·International Journal of Computer Assisted Radiology and Surgery·Erik SmistadFrank Lindseth
Nov 14, 2015·Journal of Neurosurgery. Spine·Gregory F JostPhilippe Cattin
Mar 30, 2016·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·Yong HuBingke Zhu
Dec 3, 2016·International Journal of Spine Surgery·Catherine A MillerDavid W Polly
Mar 3, 2017·World Neurosurgery·Gregory F JostPhilippe Cattin
Apr 25, 2017·Clinical Spine Surgery : a Spine Publication·Michael PutzierEike K Hoff