Results 11 to 20 of about 1,836,403 (363)
Evaluation of the efficacy of modal analysis in predicting the pullout strength of fixation bone screws. [PDF]
JOR Spine, 2022 We evaluated the efficacy of a novel method in predicting the pullout strength of bone screws. The analysis showed that the pullout strength is highly affected by the size of the pilot hole. The nondestructive method can be used to predict the pullout strength of the bone screws.
Einafshar M, Hashemi A, Kiapour A.
europepmc +2 more sources
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
doaj +1 more source
Mechanical performance comparison of two surgical constructs for wrist four-corner arthrodesis via dorsal and radial approaches [PDF]
Clinical Biomechanics, Elsevier, 2021, 82 (15), pp.105274, 2022 Background: Four-corner arthrodesis, which involves fusing four carpal bones while removing the scaphoid bone, is a standard surgery for the treatment of advanced stages of wrist arthritis. Nowadays, it can be performed using a dorsal approach by fixing a plate to the bones and a new radial approach is in development.
arxiv +1 more source
Immediate stabilization of pedicle screws
Current Directions in Biomedical Engineering, 2023 This study was designed as proof of principle and safety test of the novel technique, the Immediate Stabilization System (ISS). The technique is designed to immediately stabilize polymer-augmented pedicle screws (PAS) in deficient bone and avoid ...
Wild Michael de +6 more
doaj +1 more source
Geriatric 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
Model-Based Compensation of Moving Tissue for State Recognition in Robotic-Assisted Pedicle Drilling [PDF]
IEEE Transactions on Medical Robotics and Bionics 2 (3), 463-473,
2020, 2020 Drilling is one of the hardest parts of pedicle screw fixation, and it is one of the most dangerous operations because inaccurate screw placement would injury vital tissues, particularly when the vertebra is not stationary. Here we demonstrate the drilling state recognition method for moving tissue by compensating the displacement based on a simplified
arxiv +1 more source
PLoS 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
The stability of bone screws in the os sacrum [PDF]
European Spine Journal, 1998 A variety of points of insertion and implantation techniques are recommended for inserting screws into the os sacrum. On the basis of 16 complete human sacrum specimens the following axial pull-out tests were performed: 1. Insertion of convergent measuring screws, 6.0 mm and 7.0 mm in outside diameter respectively, into the body of vertebra S1 using a ...
I. Krönauer +4 more
openaire +3 more sources
BMC 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
Scientific Reports, 2022 Threads of modern pedicle screws can vary greatly in design. It is difficult to assess which interplay of design features is particularly advantageous for screw anchorage.
Martin Weidling +3 more
doaj +1 more source