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Keywords: lumbar spine
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Journal Articles

The Evaluation of a Novel Three-Dimensional Printed Expandable Pedicle Screw Sleeve Insert

Timothy A. Burkhart, Manjunath Sadashivaiah, Jacob Reeves, Paraham Rasounlinejad
Journal: Journal of Medical Devices
Publisher: ASME
Article Type: Research-Article
J. Med. Devices. September 2019, 13(3): 031004.
Paper No: MED-18-1238
https://doi.org/10.1115/1.4043762
Published Online: July 15, 2019
... and vertebral body. A three-dimensional (3D) printed, screw sleeve was designed that expanded within the pedicle and vertebral body when a standard pedicle screw was inserted into it. The left and right pedicle of ten (N = 10) cadaveric lumbar spine specimens (L3–L5) were randomly assigned to be instrumented...
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Topics: Failure, Screws, Spinal pedicle screws, Design, Displacement, Lumbar spine
Journal Articles

Mechanical Characterization of a Viscoelastic Disc for Lumbar Total Disc Replacement

Edward C. Benzel, Isador H. Lieberman, E. Raymond Ross, Raymond J. Linovitz, James Kuras, Kari Zimmers
Journal: Journal of Medical Devices
Publisher: ASME
Article Type: Research Papers
J. Med. Devices. March 2011, 5(1): 011005.
https://doi.org/10.1115/1.4003536
Published Online: March 8, 2011
... not utilize viscoelastic materials and are based on a ball and socket design that does not allow loading compliance. Mechanical testing was performed to characterize the durability and range of motion (ROM) of an investigational viscoelastic TDR (VTDR) device for the lumbar spine, the Freedom ® Lumbar Disc...
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Topics: Compression, Disks, Fatigue testing, Stress, Stiffness, Rotation, Testing, Failure, Shear (Mechanics), Wear testing
Journal Articles

Application of the Finite Element Technique in the Design and Evaluation of the Artificial Facets for the Lumbar Spine

Miranda N. Shaw, Vijay K. Goel, Koichi Sairyo, Jayant Jangra, Ashok Biyani, Nabil Ebraheim
Journal: Journal of Medical Devices
Publisher: ASME
Article Type: Technical Briefs
J. Med. Devices. June 2007, 1(2): 176–179.
https://doi.org/10.1115/1.2735974
Published Online: December 12, 2006
... City, IA. Kong , W. Z. , Goel , V. K. , and Gilbertson , L. G. , 1998 , “ Prediction of Biomechanical Parameters in the Lumbar Spine during Static Sagittal Plane Lifting ,” J. Biomech. Eng. 0148-0731 , 120 ( 2 ), pp. 273 – 280 . Goel , V. K. , Panjabi , M. M...
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Topics: Biomechanics, Design, Finite element analysis, Finite element model, Lumbar spine, Spinal pedicle screws, Titanium, Stress, Yield stress, Bone