Results 21 to 30 of about 57,792 (166)

Cortical bone trajectory fixation cause low compression force in anterior vertebral column

North American Spine Society Journal, 2022
Background: The cortical bone trajectory (CBT) screws follow a caudocephalad and lateral path from the pedicle to the vertebral body. The bone fusion rate of CBT fixation is equal to or lower than conventional pedicle screw fixation.
Sho Fujiwara, Yuichiro Ohnishi, Koichi Iwatsuki, Haruhiko Kishima   +3 more
doaj   +1 more source

Impact of bone density and integrated screw configuration on standalone anterior lumbar interbody construct strength

North American Spine Society Journal
Background: In anterior lumbar interbody fusion (ALIF), the use of integrated screws is attractive to surgeons because of the ease of implantation and no additional profile.
Ross Dies, BS, Jay Manuel, MS, Andrew S. Zhang, MD, Milan Mody, MD, Seokgi Lee, PhD, Mathew Root, BS, Trevor Carroll, MD, Chukwuemeka Mbagwu, MD, Giovanni F. Solitro, PhD   +8 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  

ONE OR TWO SCREWS IN THE FRACTURE OF THE ODONTOID PROCESS? EVALUATION USING COMPUTED TOMOGRAPHY

Coluna/Columna, 2015
Objective:To evaluate the bone area of the odontoid process through computed tomography and its relation with the area of one and two screws in the male and female subjects.Methods:188 CT scans of adults were analyzed.
Carlos Alexandre Botelho do Amaral, Edgar Taira Nakagawa, Leonardo Ternis Ferreira, José Sergio Franco, Robinson Esteves Santos Pires, Flávio Cavallari, Pedro José Labronici   +6 more
doaj   +1 more source

Lateral migration resistance of screw is essential in evaluating bone screw stability of plate fixation

Scientific Reports, 2021
Conventional evaluation of the stability of bone screws focuses on pullout strength, while neglecting lateral migration resistance. We measured pullout strength and lateral migration resistance of bone screws and determined how these characteristics ...
Xiaoreng Feng, Weichen Qi, Teng Zhang, Christian Fang, Hongfeng Liang, Bin Chen, Frankie Leung   +6 more
doaj   +1 more source

Effects of Immediate Orthodontic and Orthopedic Forces on Peri-Miniscrew Bones: Histomorphologic and Histomorphometric Assessment in Dogs

International Journal of Dentistry, 2012
Aim. The aim of this study was histomorphologic and histomorphometric evaluation of peri-screw bone after immediate orthodontic and orthopedic forces and comparing them with a control group. Materials and Methods.
Mansour Rismanchian, Sayed Hamid Raji, Danesh Teimori Rik, Sayed Mohammad Razavi, Navid Khalighinejad, Hossein Goroohi, Hamid Badrian   +6 more
doaj   +1 more source

Double-screw and quadruple-button fixation for the glenoid: Latarjet versus bone block applications

JSES International, 2020
Background: The Latarjet and bone block procedures can be secured with screws or cortical buttons. The purpose of this biomechanical study was to compare quadruple buttons vs. double screws for fixation of anterior glenoid bone grafts.
Jacob M. Reeves, PhD, George S. Athwal, MD, FRCSC, James A. Johnson, PhD   +2 more
doaj   +1 more source

Fatigue failure of cortical bone screws [PDF]

Journal of Biomechanics, 1983
An experimental study of the fatigue life of cortical bone screws under conditions which stimulated in vivo usage was performed. The two most important factors influencing fatigue life were axial screw tension (the force normal of the plate to bone) and the cyclic shearing load.
Zand, Martin S., Goldstein, Steven A., Matthews, Larry S.   +2 more
openaire   +3 more sources

Proposal of a method for evaluating the bone affinity of pedicle screws and considering differences in bone affinity between carbon-fiber-reinforced plastic and titanium alloy pedicle screws

Discover Applied Sciences
Bone affinity for materials is important for success of bone implants, including pedicle screws. Therefore, regarding medical devices using new materials, evaluating the biocompatibility and bone affinity for our recently developed posterior internal ...
Hiroki Ohashi, Kohei Morita, Satoshi Yamana, Kenji Tsuchida, Yasuhiro Furuta, Tomoko Mizushima, Yuki Hishinuma, Shunsuke Katsumi, Akira Shinohara, Satoshi Tani, Yuichi Murayama   +10 more
doaj   +1 more source

Use of Eggshells as Bone Grafts around Commercially Pure Titanium Implant Screws Coated with Nano Calcium Sulfate

International Journal of Biomaterials, 2022
Background. Implant insertion in regions with poor bone quantity, such as the posterior maxilla, is potentially associated with an increased rate of implant failure. Calcium sulfate can be used as the coating material for commercially pure titanium (CpTi)
Dher Riyadh Kadhim, Thekra Ismael Hamad, Abdalbseet A. Fatalla   +2 more
doaj   +1 more source