Results 71 to 80 of about 17,221 (188)

Effect of pedicle screw augmentation with a self-curing elastomeric material under cranio-caudal cyclic loading—a cadaveric biomechanical study

Journal of Orthopaedic Surgery and Research, 2018
Background Pedicle screws can be augmented with polymethylmethacrylate (PMMA) cement through cannulated and fenestrated pedicle screws to improve screw anchorage. To overcome the drawbacks of PMMA, a modified augmentation technique applying a self-curing
Werner Schmoelz, Alexander Keiler, Marko Konschake, Richard A Lindtner, Alessandro Gasbarrini   +4 more
doaj   +1 more source

Comparison of short-segment monoaxial and polyaxial pedicle screw fixation combined with intermediate screws in traumatic thoracolumbar fractures: a finite element study and clinical radiographic review

Clinics
OBJECTIVES: No studies have compared monoaxial and polyaxial pedicle screws with regard to the von Mises stress of the instrumentation, intradiscal pressures of the adjacent segment and adjacent segment degeneration.
Hongwei Wang, Yiwen Zhao, Zhongjun Mo, Jianda Han, Yu Chen, Hailong Yu, Qi Wang, Jun Liu, Changqing Li, Yue Zhou, Liangbi Xiang   +10 more
doaj   +1 more source

Results of using robotic-assisted navigational system in pedicle screw placement.

PLoS ONE, 2019
Recent technical developments have resulted in robotic-assisted pedicle screw placement techniques. However, the use of robotic-assisted navigational techniques is still subject to controversy.
Hsuan-Yu Chen, Xiu-Yun Xiao, Chih-Wei Chen, Hao-Kai Chou, Chen-Yu Sung, Feng-Huei Lin, Po-Quang Chen, Tze-Hong Wong   +7 more
doaj   +1 more source

Robotic spine systems: overcoming surgeon experience in pedicle screw accuracy: a prospective study [PDF]

Asian Spine Journal
Study Design Prospective single-center study. Purpose To compare the accuracy of pedicle screws placed by freehand and under fluoroscopy and robotic assistance with intraoperative image acquisition.
Madhava Pai Kanhangad, Vidyadhara Srinivasa, Balamurugan Thirugnanam, Abhishek Soni, Anjana Kashyap, Alia Vidyadhara, Sharath Kumar Rao   +6 more
doaj   +1 more source

Technical aspects of rod-insertion forceps (persuader) application in reducing construct failure after lumbar spine fusion surgery: a biomechanical cadaveric study in Germany [PDF]

Asian Spine Journal
Study Design A prospective experimental study. Purpose This biomechanical in vitro study aimed to examine the extent to which the use of a rod persuader (RP) leads to additional mechanical stress on the screw–rod system and determine its influence on the
Nikolaus Kernich, Vincent J. Heck, Nadine Ott, Andreas Prescher, Peer Eysel, Juan Manuel Vinas-Rios   +5 more
doaj   +1 more source

True anteroposterior view pedicle screw insertion technique

Therapeutics and Clinical Risk Management, 2016
Jia-yue Bai, Wei Zhang, Ji-long An, Ya-peng Sun, Wen-yuan Ding, Yong Shen Key Biomechanical Laboratory of Orthopedics, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, People’s Republic of China Background: The wide use of ...
Bai JY, Zhang W, An JL, Sun YP, Ding WY, Shen Y   +5 more
doaj  

Three‐Dimensional Printing Technology Based on Digital Orthopedics: 5‐Point Positioning Point‐Contact Pedicle Navigation Template in the Case of Scoliosis and Complex Pedicle

Orthopaedic Surgery
Objective Imperfect fitting of the navigation template leads to prolonged surgery time and increased blood loss. These problems have not been effectively addressed in previous research.
Qiling Chen, Chunshan Luo, Tingsheng Lu, Shudan Yao, Xingwei Pu, Minglu Yang, Lu Chen, Lihang Wang   +7 more
doaj   +1 more source

Automated measurement of lumbar pedicle screw parameters using deep learning algorithm on preoperative CT scans

Journal of Bone Oncology
Purpose: This study aims to devise and assess an automated measurement framework for lumbar pedicle screw parameters leveraging preoperative computed tomography (CT) scans and a deep learning algorithm.
Qian Zhang, Fanfan Zhao, Yu Zhang, Man Huang, Xiangyang Gong, Xuefei Deng   +5 more
doaj   +1 more source

The Comparison of Metal Artifacts Reduction between the Commercial Tool Gemstone Spectral Imaging and NUMAR Program on Lumbar Spine Computed Tomography Images

Journal of Health Science and Medical Research (JHSMR), 2015
Objective: This study aimed to compare the performance of metal artifacts reduction on lumbar spine computed tomography (CT) Images between the commercial tool Gemstone Spectral Imaging (GSI) versus the NUMAR Program. Material and Methods: The efficiency
Titipong Kaewlek
doaj  

Automated multi-objective pedicle screw planning. [PDF]

J Spine Surg
Götschi T, Maranta G, Cornaz F, Abel F, Farshad M, Widmer J.   +5 more
europepmc   +1 more source