Effects of thread shape on the pullout strength of miniscrews
American Journal of Orthodontics and Dentofacial Orthopedics, 2012 The aim of this study was to determine the effects of variations in thread shape on the axial pullout strength of orthodontic miniscrews.A total of 35 miniscrews, 7 of each design being considered, were tested by performing pullout tests on a synthetic bone support.
Gracco A +4 more
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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 +3 more
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Predicting femoral neck screw pullout strength using DXA and novel assessments of bone microarchitecture. [PDF]
Arch OsteoporosSummary This study determined how well DXA and other novel assessments of bone microarchitecture predicted screw pullout strength in the femoral neck.
Moyer J +8 more
europepmc +2 more sources
A technique for the measurement of reinforcement fibre tensile strength at sub-millimetre gauge lengths [PDF]
, 2001 The strength of composite reinforcement fibres is normally measured on samples of much greater length than the actual residual fibre lengths found in many composite materials.
Kalinka, G., Thomason, J.L.
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Bone Hardness of Different Anatomical Regions of Human Radius and Its Impact on the Pullout Strength of Screws [PDF]
Orthopaedic Surgery, 2019 Bing Yin, Wei-Wei Wu, Yan-Bin Zhu
exaly +2 more sources
Practical cases in the application of the pullout method (LOK-TEST and CAPO-TEST) for in-place compressive strength [PDF]
MATEC Web of Conferences, 2022 The pullout methods LOK- TEST and CAPO-TEST for in-place compressive strength are presented with their theoretical analysis’ background and correlations from 30 major studies, made worldwide, showing robust general correlations between pullout force and ...
Petersen Claus Germann
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A Biomechanical Comparison of Expansive Pedicle Screws for Severe Osteoporosis: The Effects of Screw Design and Cement Augmentation. [PDF]
PLoS ONE, 2015 Expansive pedicle screws significantly improve fixation strength in osteoporotic spines. However, the previous literature does not adequately address the effects of the number of lengthwise slits and the extent of screw expansion on the strength of the ...
Ching-Lung Tai +5 more
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Frontiers in Bioengineering and Biotechnology, 2023 Intraoperative pedicle screw depth adjustment after initial insertion, including both forward and backward adjustments, is sometimes necessary to facilitate rod application and ensure that the screw is in the correct position, which is determined by ...
Yun-Da Li +9 more
doaj +1 more source
Journal of Orthopedic and Spine Trauma, 2017 Background: Pedicle screw instrumentation is one of the most commonly used forms of stabilization. Achieving solid screw fixation within the bone presents a significant challenge to spinal surgeons.
Sheida Vafadar, Gholamreza Rouhi
doaj +1 more source
The Bond Strength on Over Lapping Bars Using Pullout Test [PDF]
, 2021 The behavior of reinforced concrete structures depends on sufficient bond strength between concrete and reinforcing steel. The perfect bond between the reinforcement surface and the concrete makes the transfer force work well. In this experiment, several
Rosyidah, Anis; Civil Engineering Department, Politeknik Negeri Jakarta, Jl. Prof. GA. Siwabessy Kampus UI Depok, 16425, Indonesia +5 more
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