Results 101 to 110 of about 128,782 (181)

Biomechanical arrangement of threaded and unthreaded portions providing holding power of transpedicular screw fixation

, 2017
Background: Failure of pedicle screw is a major concern in spinal surgery. The threaded and unthreaded portions of the pedicle screw provide the ability to anchor and squeeze the surrounding bone, respectively.
Tsuang, Fon-Yih;Chen, Chia-Hsien;Wu, Lien-Chen;Kuo, Yi-Jie;Lin, Shang-Chih;Chiang, Chang-Jung
core   +1 more source

The influence of the interfacing angle between the pedicle screw and support rods on the clinical outcomes after posterior lumbar-sacral topping-off surgery: A retrospective clinical study

Journal of Orthopaedic Surgery and Research
Background The mismatch in the pedicle screw/rod interface angle is a common phenomenon after topping-off surgery, indicating that the implants were assembled under mechanical stress, which may negatively impact clinical outcomes. Purpose This study aims
Mingzheng Zhao, Honghao Yang, Shixuan Guo, Fengqi Cheng, Yaoshen Zhang, Yong Hai, Yuzeng Liu   +6 more
doaj   +1 more source

In vitro biomechanical analysis of a new lumbar low-profile locking screw-plate construct versus a standard top-loading cantilevered pedicle screw-rod construct: Technical report

, 2010
Objective: A standard top-loading lumbar pedicle screw-rod system is compared with a pedicle screw-plate system with smaller-diameter screws, more medial entry, and lower profile to assess the relative stability, strength, and resistance to fatigue of ...
Doǧan, Şeref, Yüksel, K. Zafer, Soto-Barraza, Julio C., Theodore, Nicholas, Crawford, Neil R., Villasana-Ramos, Octavio, Marciano, Frederick F., Porter, Randall W., Sawa, Anna G.U., K. Zafer Yüksel, Nicholas Theodore, Octavio Villasana-Ramos, Anna G.U. Sawa, Şeref Doğan, Neil R. Crawford, Frederick F. Marciano, Julio C. Soto-Barraza, Randall W. Porter   +17 more
core   +1 more source

Comparison of three sacral screw internal fixation techniques in the treatment of L4–S1 lumbar degenerative disease with osteoporosis: a retrospective observational study

Journal of Orthopaedic Surgery and Research
Background Patients with L4–S1 lumbar degenerative disease (LDD) with osteoporosis are prone to sacral-screw loosening during spinal internal fixation. We aimed to compare the clinical efficacy and imaging results of sacral bicortical, tricortical, and ...
Guo-ning Gu, Teng Liu, Jie Ding, Hui-zhi Guo, Guo-ye Mo, Yong-xian Li, Kai Yuan, Zhi-dong Yang, Shun-cong Zhang, Yong-chao Tang   +9 more
doaj   +1 more source

A new concept for implant fixation: bone-to-bone biologic fixation [PDF]

European Cells & Materials, 2015
Many attempts have been made to reduce complications of bone implant, such as pedicle screw loosening. To address this problem, the authors suggest a new concept of bone-to-bone biologic fixation using recombinant human bone morphogenetic protein-2 ...
D-Y Kim, J-R Kim, KY Jang, K-B Lee
doaj  

Analysis of pedicle screw loosening in degenerative spine surgery

Brain and Spine, 2021
Michael Goetzen, Daniel Koller, Peter Ferlic   +2 more
openaire   +2 more sources

Pedicle Screw Fixation Under Nonaxial Loads: A Cadaveric Study

, 2016
STUDY DESIGN: An experimental study of pedicle screw fixation in human cadaveric vertebrae. OBJECTIVE: The aim of this study was to experimentally characterize pedicle screw fixation under nonaxial loading and to analyze the effect of the surgeons' screw
Arnoux, Pierre-Jean, Wagnac, Eric, Mac-Thiong, Jean-Marc, Bianco, Rohan-Jean, Aubin, Carl-Eric   +4 more
core   +1 more source

Biomechanical Properties of Novel Porous Scaffold Core and Hollow Lateral Hole Pedicle Screws: A Comparative Study in Bama Pigs

Orthopaedic Surgery
Objective Screw loosening is a common complication of internal fixation of pedicle screw. Therefore, the development of a pedicle screw with low loosening rate and high biosafety is of great clinical significance.
Yong Hu, Xijiong Chen, Zhentao Chu, Linwei Luo, Zhiwei Gan, Jianbin Zhong, Zhenshan Yuan, Bingke Zhu, Weixin Dong   +8 more
doaj   +1 more source

“Safety Sling” Against Pedicle Screw Loosening in Lumbar Spinal Fusion

Spine Open
Background Context: Spinal fusion with pedicle screw fixation is widely used for stabilization, yet its long-term success is often limited by mechanical complications such as screw loosening and pull-out. Purpose: Pedicle screw ...
Anna Schuler, Jonas Widmer, Oliver Wigger, Frédéric Cornaz, Ramon Rohner, Marie-Rosa Fasser, Mazda Farshad   +6 more
openaire   +1 more source

The pullout performance of pedicle screws

, 2015
This brief book systematically discusses all subjects that affect the pullout strength of pedicle screws. These screws are used in spinal surgeries to stabilize the spine.
Başgül, C., Demir, Teyfik, Basgül, Cemile   +2 more
core   +1 more source