Results 21 to 30 of about 1,046,684 (289)

Finite element modelling of screw fixation in augmented and non-augmented cancellous bone [PDF]

open access: yes, 2012
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.This research project presents a study of the fixation of screws in augmented and non-augmented cancellous bone at a microscopic scale. It is estimated that
Bennani Kamane, Philippe
core   +7 more sources

A finite element strategy applied to intramedullary nailing of the proximal femur [PDF]

open access: yes, 2005
This thesis was submitted for the degree of Doctor of Philosophy and was awarded by Brunel University.An intramedullary nail is a trauma treatment device used for fracture fixation of long bones. These devices are subject to failure, including lag screw
Simpson, David John
core   +7 more sources

A 3-dimensional finite element analysis to evaluate the impact of force direction, insertion angle, and cortical bone thickness on mini-screw and its surrounding bone [PDF]

open access: yesJournal of Dental Research, Dental Clinics, Dental Prospects, 2021
Background. The present study aimed to assess the stress and strain distribution on mini-screws and the surrounding bone in cases of different cortical bone thicknesses (CBTs), mini-screw insertion angles, and force directions using finite element ...
Omar Nazal Auwer   +2 more
doaj   +1 more source

Biomechanical Study of 3 Osteoconductive Materials Applied in Pedicle Augmentation and Revision for Osteoporotic Vertebrae: Allograft Bone Particles, Calcium Phosphate Cement, Demineralized Bone Matrix [PDF]

open access: yesNeurospine, 2023
Objective This study assessed biomechanical properties of pedicle screws enhanced or revised with 3 materials. We aimed to compare the efficacy of these materials in pedicle augmentation and revision.
Chongyu Jia   +7 more
doaj   +1 more source

Cortical bone screws constructive characteristics - A comparative study [PDF]

open access: yes, 2021
Osteosynthesis is a surgical technique for the treatment of skeletal fractures through the implant of mechanical devices, such as plates and screws, in order to stabilize and fix the injured skeletal segment. It is preferred to the conservative treatment
Bignardi C.   +11 more
core   +1 more source

Biomechanical and histological evaluation of roughened surface titanium screws fabricated by electron beam melting.

open access: yesPLoS ONE, 2014
BackgroundVarious fabrication methods are used to improve the stability and osseointegration of screws within the host bone. The aim of this study was to investigate whether roughened surface titanium screws fabricated by electron beam melting can ...
Jun Yang   +6 more
doaj   +1 more source

Role of Additional Inferomedial Supporting Screws in Osteoporotic 3-Part Proximal Humerus Fracture: Finite Element Analysis

open access: yesGeriatric Orthopaedic Surgery & Rehabilitation, 2020
Introduction: Importance of inferomedial supporting screws in preventing varus collapse has been investigated for the proximal humerus fracture. However, few studies reported the results of osteoporotic complex fracture.
Hyojune Kim MD   +8 more
doaj   +1 more source

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

open access: yesAsian 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   +3 more
doaj   +1 more source

Osseointegration of Titanium Implants in Onlay of Ceramentâ„¢, a New Ceramic Bone Substitute

open access: yesJournal of Functional Biomaterials, 2016
The purpose was to investigate whether a new biphasic and injectable ceramic bone substitute Ceramentâ„¢ that rapidly remodels to bone, may contribute to the retention of titanium implant screws during the healing period, and to analyze the pattern of bone
Anna Truedsson   +3 more
doaj   +1 more source

The hydroxyapatite modified 3D printed poly L-lactic acid porous screw in reconstruction of anterior cruciate ligament of rabbit knee joint: a histological and biomechanical study

open access: yesBMC Musculoskeletal Disorders, 2023
Background 3D printing technology has become a research hotspot in the field of scientific research because of its personalized customization, maneuverability and the ability to achieve multiple material fabrications. The focus of this study is to use 3D
Yafei Wang   +4 more
doaj   +1 more source

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