Results 151 to 160 of about 11,405 (203)

Pullout Performance of Self-Tapping Medical Screws

Journal of Biomechanical Engineering, 2011
This study investigates the effect of the pilot hole size, implant depth, synthetic bone density, and screw size on the pullout strength of the self-tapping screw using analytical, finite element, and experimental methodologies. Stress distribution and failure propagation mode around the implant thread zone are also investigated.
Sayed A Nassar, Xianjie Yang
exaly   +3 more sources

Self-tapping Screws as Reinforcement for Structural Timber Elements

RILEM State-of-the-Art Reports, 2021
The use of self-tapping screws is a state-of-the-art practice in fastener and reinforcement technologies for timber structures. The high axial stiffness and load-carrying capacity of self-tapping screws, together with their easy handling, make them one of the most economical choices for applications in both fastener and reinforcement domains.
Philipp Dietsch, Andreas Ringhofer
exaly   +3 more sources

Quantifying Accuracy of Self-Tapping Screw Models

2021 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), 2021
Correct torquing of bone screws is important to prevent fixation failures and ensure positive patient outcomes. It has been proposed that an automatic model-based method may be able to determine the patient-specific material properties of bone, and provide objective and quantitative torquing recommendations.
Jack Wilkie 0001, Paul Docherty 0001, Thomas Stieglitz, Knut Möller   +3 more
openaire   +2 more sources

PREDICTION OF WITHDRAWAL STIFFNESS OF SELF-TAPPING SCREWS

World Conference on Timber Engineering (WCTE 2023), 2023
: Self-tapping screw is a new generation of fasteners which is often inserted into the face of timber membersat an angle to develop stiff and strong connections. The withdrawal stiffness of self-tapping screws is an important property that influences the performance of the connection.
Mirdad, A.H., Niederwestberg, J., Jucutan, A., Chui, Y.H.   +3 more
openaire   +2 more sources

Geometric Generalization of Self Tapping Screw Insertion Model

2021 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), 2021
Bone screws are used in orthopaedic procedures to fix implants and stabilise fractures. These procedures require care, as improperly torquing the screws can lead to implant failure or tissue damage, potentially requiring revision surgery or causing further disability.
Jack Wilkie 0001, Paul Docherty 0001, Thomas Stieglitz, Knut Möller   +3 more
openaire   +2 more sources

Investigating Torque-Speed Relationship of Self-Tapping Screws

2021 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), 2021
Correctly torquing bone screws is important to prevent fixation failures and ensure positive patient outcomes. It has been proposed that an automatic model-based method may be able to determine the patient-specific material properties of bone, and provide objective and quantitative torquing recommendations.
Jack Wilkie 0001, Paul Docherty 0001, Thomas Stieglitz, Knut Möller   +3 more
openaire   +2 more sources

AO/ASIF self-tapping screws (STS)

Injury, 1993
The term self-tapping screw refers to screws which are inserted into a predrilled hole directly without first tapping a thread. A self-drilling screw would refer to a screw inserted without predrilling which would function similar to a threaded K-wire. Selftapping screws are further subdivided into threadfarming and thread-cutting screws.
F W, Baumgart, J, Cordey, K, Morikawa, S M, Perren, B A, Rahn, R, Schavan, S, Snyder   +6 more
openaire   +2 more sources

Self-Drilling and Self-Tapping Screws

Journal of Craniofacial Surgery, 2010
The aim of the current study was to compare self-drilling and self-tapping screws with regard to bone contact and the production of bone debris using scanning electron microscopy.Three New Zealand rabbit calvariae were used. Self-tapping and self-drilling screws were inserted into the outer surface of the skull with and without saline solution ...
Juliana Gonçalves, Goelzer, Rafael Linard, Avelar, Rogério Belle, de Oliveira, Roberto, Hubler, Roger Lanes, Silveira, Rosilene Andrea, Machado   +5 more
openaire   +2 more sources

In vitro Evaluation of the Loosening Characteristics of Self-Tapped and Non-Self-Tapped Cortical Bone Screws

Clinical Orthopaedics and Related Research, 1981
The heads of self-tapping and non-self-tapping screws in dog femurs were exposed to a cyclic shearing force of 110 N for 200 loading cycles. This cyclic shear loading created a decrease in pull-out strength for both screw types of approximately 11% (p less than 0.01).
C T, Vangsness, D R, Carter, V H, Frankel   +2 more
openaire   +2 more sources

Analysis of the osseous/metal interface of drill free screws and self-tapping screws

Journal of Cranio-Maxillofacial Surgery, 2001
Aim: A comparison of metal/osseous interface and bone remodelling after insertion of different types of titanium bone screws in vivo. Material: Samples of five of each of the following bone screw types were inserted into the anterior wall of the frontal sinus of five Göttingen minipigs: self-tapping micro- (1.5 mm) and miniscrews (2.0 mm) or drill free
W, Heidemann, H, Terheyden, K L, Gerlach
openaire   +3 more sources