Results 31 to 40 of about 57,299 (228)

Pedicle screw placement in patients with variant atlas pedicle [PDF]

Journal of International Medical Research, 2016
Objective To investigate how the anatomy of variant atlas vertebra impacts on the strategy used to place pedicle screws used to treat atlantoaxial instability. Methods The study enrolled patients with cervical instability who had a ...
Zhang, Qiang-Hua, Li, Hai-Dong, Min, Ji-Kang   +2 more
openaire   +2 more sources

Comparative analysis of the accuracy of pedicle screw insertion in surgical treatment of children with idiopathic scoliosis

Хирургия позвоночника, 2017
Objective. To perform comparative analysis of the accuracy of pedicle screw placement in spinal deformity correction in children with idio- pathic scoliosis using 3D-CT navigation. Material and Methods.
Dmitry N. Kokushin, Vladislav V. Murashko, Kirill A. Kartavenko, Nikita O. Khusainov   +3 more
doaj   +1 more source

Minimally Invasive Subaxial Cervical Pedicle Screw Placement with Routine Fluoroscopy: Cadaveric Feasibility Study and Report of 6 Clinical Cases [PDF]

Journal of Minimally Invasive Spine Surgery and Technique, 2022
Objective Conventional cervical pedicle screw insertion necessitates extensive paraspinal muscle dissection and retraction in order to achieve the lateral to medial angulation needed to achieve the optimal screw trajectory.
Umesh Srikantha, Parichay J Perikal, Akshay Hari, Yadhu K Lokanath, Nirmala Subramaniam, Aniruddha T Jagannatha, Ravi G Varma   +6 more
doaj   +1 more source

Transpedicular Screw Placement Accuracy Using the O-Arm Versus Freehand Technique at a Single Institution

Global Spine Journal, 2022
Study Design: Retrospective cohort. Objective: The objective of this study was to assess the effectiveness of the O-arm as an intraoperative imaging tool by comparing accuracy of pedicle screw placement to freehand technique. Methods: The study comprised
Benjamin D. Crawford BS, Corbyn M. Nchako MD, Kelsey A. Rebehn MD, Heidi Israel PhD, Howard M. Place MD   +4 more
doaj   +1 more source

A biomechanical comparison of polymethylmethacrylate-reinforced and expansive pedicle screws in pedicle-screw revisions [PDF]

, 2009
Objectives: Different techniques and choices exist for revision of pedicle screws, two of which are pedicle screw combined with cement augmentation and expansive pedicle screw fixation.
Erdem, Mehmet, Asci, Murat, Kelestemur, M. Halidun, Sen, Cengiz, Bostan, Bora, Gunes, Taner, Esenkaya, Irfan, Kelestemur, Mehmet Halidun   +7 more
core   +1 more source

A Bicortical Pedicle Screw in the Cephalad Trajectory Is the Best Option for the Fixation of an Osteoporotic Vertebra: A Finite Element Study

Spine Surgery and Related Research
Introduction: Pedicle screws are commonly used in fixation to treat various spinal disorders. However, screw loosening is a prevalent complication, particularly in patients with osteoporosis.
Akimasa Murata, Shunji Tsutsui, Ei Yamamoto, Takuhei Kozaki, Ryuichiro Nakanishi, Hiroshi Yamada   +5 more
doaj   +1 more source

Assessment of conformity of actual thoraco-lumbar pedicle screw dimensions to manufacturers’ specifications

Science Progress, 2021
Although correct selection of pedicle screw dimensions is indispensable to achieving optimum results, manufacturer-specified or intended dimensions may differ from actual dimensions.
Marian Banas, Nirjhar Hore, Michael Buchfelder, Sebastian Brandner   +3 more
doaj   +1 more source

von Mises stress of the pedicle screws.

, 2014
A. von Mises stress of the upper pedicle screws. B. von Mises stress of the lower pedicle screws. C. Ratio of the von Mises stress of the upper pedicle screws to that of the lower pedicle screws.
Liangbi Xiang (575585), Yue Zhou (71752), Changqing Li (333970), Jun Liu (42548), Hongwei Wang (151141)   +4 more
core   +1 more source

Hybrid Stabilization of Thoracic Spine Fractures with Sublaminar Bands and Transpedicular Screws: Description of a Surgical Alternative and Review of the Literature

Case Reports in Orthopedics, 2015
Stabilization of unstable thoracic fractures with transpedicular screws is widely accepted. However, placement of transpedicular screws can cause complications, particularly in the thoracic spine with physiologically small pedicles. Hybrid stabilization,
Marie-Therese Unterweger, Frank Kandziora, Klaus J. Schnake   +2 more
doaj   +1 more source

Comparison of the Pullout Strength of Different Pedicle Screw Designs and Augmentation Techniques in an Osteoporotic Bone Model [PDF]

Asian Spine Journal, 2018
Study DesignMechanical study.PurposeTo compare the pullout strength of different screw designs and augmentation techniques in an osteoporotic bone model.Overview of LiteratureAdequate bone screw pullout strength is a common problem among osteoporotic ...
Gorkem Kiyak, Tevfik Balikci, Ahmed Majid Heydar, Murat Bezer   +3 more
doaj   +1 more source