Results 41 to 50 of about 1,900,237 (384)

A Case of Implant Failure in Partial Wrist Fusion Applying Magnesium-Based Headless Bone Screws

open access: yesCase Reports in Orthopedics, 2016
This article presents a case of implant failure resulting in mechanical instability of a scaphotrapezotrapezoideal arthrodesis using magnesium-based headless bone screws.
A. Wichelhaus   +2 more
semanticscholar   +1 more source

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

open access: yesScientific 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   +6 more
doaj   +1 more source

Dynamic stabilization versus fusion for treatment of degenerative spine conditions. [PDF]

open access: yes, 2011
Study design Comparative effectiveness review.Study rationale Spinal fusion is believed to accelerate the degeneration of the vertebral segment above or below the fusion site, a condition called adjacent segment disease (ASD).
Chou, Dean   +3 more
core   +1 more source

Should we use cortical bone screws for cortical bone trajectory?

open access: yesJournal of Neurosurgery : Spine, 2015
OBJECT In 2009, Santoni et al. reported cortical bone trajectory (CBT) as a method of inserting pedicle screws to obtain more solid fixation, and proposed the use of cortical trajectory screws with a more closely placed thread (cortical screws) for CBT ...
M. Ueno   +10 more
semanticscholar   +1 more source

Isolated olecranon fractures in children affected by osteogenesis imperfecta type I treated with single screw or tension band wiring system: outcomes and pitfalls in relation to bone mineral density [PDF]

open access: yes, 2017
The purpose of this study is to compare the results of 2 techniques, tension band wiring (TBW) and fixation with screws, in olecranon fractures in children affected with osteogenesis imperfecta (OI) type I.
D'Eufemia, Patrizia   +7 more
core   +1 more source

Effect of sonic hedgehog/β-TCP composites on bone healing within the critical-sized rat femoral defect [PDF]

open access: yes, 2013
The creation of entirely synthetically derived bone substitute materials which are as effective as autologous bone grafts is desirable. Osteogenesis involves the concerted action of several proteins within a signaling cascade.
Flinspach, Armin Niklas   +5 more
core   +1 more source

Inferomedial cortical bone contact and fixation with calcar screws on the dynamic and static mechanical stability of proximal humerus fractures

open access: yesJournal of Orthopaedic Surgery and Research, 2019
BackgroundThis study aimed to explore the effect of retaining inferomedial cortical bone contact and fixation with calcar screws on the dynamic and static mechanical stability of proximal humerus fractures treated with a locking plate.MethodsTwelve ...
Xiaofeng Zhang   +8 more
semanticscholar   +1 more source

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

open access: yesColuna/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   +6 more
doaj   +1 more source

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

open access: yesEuropean 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  

Interface Between Titanium Miniplate/Screw and Human Calvaria

open access: yes, 2000
This study demonstrates interfacial changes of titanium miniplate/screw with normal calvaria and nonvascularized calvarial bone graft ensued from craniectomy in a 53-year-old female.
Hollinger, Jeffrey O   +2 more
core   +1 more source

Home - About - Disclaimer - Privacy