Results 21 to 30 of about 742,295 (257)

A new method for the determination of the locking range of oscillators [PDF]

, 2007
A time-domain method for the determination of the injection-locking range of oscillators is presented. The method involves three time dimensions: the first and the second are warped time scales used for the free-running frequency and the external ...
Condon, Marissa, Xu, Tao, Carlos E. Christoffersen, Marissa Condon, Christoffersen, Carlos E., Tao Xu   +5 more
core   +2 more sources

Biomechanics of common fixation devices for first tarsometatarsal joint fusion—a comparative study with synthetic bones

Journal of Orthopaedic Surgery and Research, 2018
Background Hallux valgus disease is a common deformity of the forefoot. There are currently more than 100 surgical approaches for operative treatment. Because hypermobility of the first tarsometatarsal joint is considered to be causal for hallux valgus ...
Rene Burchard, Robin Massa, Christian Soost, Wolfgang Richter, Gerhard Dietrich, Arne Ohrndorf, Hans-Jürgen Christ, Claus-Peter Fritzen, Jan Adriaan Graw, Jan Schmitt   +9 more
doaj   +1 more source

Long wavelength VCSEL-by-VCSEL optical injection-Locking [PDF]

, 2009
VCSEL-by-VCSEL optical injection-locking to obtain high cut-off frequencies of 1.3 μm Vertical-Cavity Surface-Emitting Lasers (VCSELs) is demonstrated. A detailed physical explanation of the underlying mechanism is presented.
Sirbu, A., Iakovlev, Vladimir, Bacou, A., Rissons, A., Iakovlev, V., Bacou, Alexandre, Mollier, Jean-Claude, Kapon, Eli, Kapon, E., Hayat, A., Mollier, J.C., Rissons, Angélique, Sirbu, Alexei, Hayat, Ahmad   +13 more
core   +1 more source

Periprosthetic fracture fixation in Vancouver B1 femoral shaft fractures: A biomechanical study comparing two plate systems

Journal of Orthopaedic Translation, 2020
Introduction: Periprosthetic fractures of the femur are an increasing problem in today's trauma and orthopaedic surgery. Owing to the hip stem, implant anchorage is very difficult in the proximal femur.
Dirk Wähnert, Marcus Müller, Hendrik Tiedemann, Sven Märdian, Michael J. Raschke, Clemens Kösters   +5 more
doaj   +1 more source

Helical plating – a novel technique to increase stiffness in defect fractures [PDF]

European Cells & Materials, 2021
Single-plate fixation bridging bone defects provokes nonunion and risks plate-fatigue failure due to under- dimensioned implants. Adding a helical plate to bridge the fracture increases stiffness and balances load sharing.
M Lenz, P Varga, D Mischler, B Gueorguiev, K Klos, A Fernandez dell’Oca, P Regazzoni, RG Richards, SM Perren   +8 more
doaj   +1 more source

Locking plates for distal femur fractures does an increased working length improve healing? [PDF]

, 2013
Includes abstract.Includes bibliographical references.Distal femur locking plates have become a very popular means of internal fixation because of their ability to provide stable distal periarticular fixation.
Koller, Ian M
core   +1 more source

Biomechanical evaluation of a novel dualplate fixation method for proximal humeral fractures without medial support

Journal of Orthopaedic Surgery and Research, 2017
Background Comminuted fractures of the proximal humerus are generally treated with the locking plate system, and clinical results are satisfactory. However, unstable support of the medial column results in varus malunion and screw perforation.
Yu He, Yaoshen Zhang, Yan Wang, Dongsheng Zhou, Fu Wang   +4 more
doaj   +1 more source

Effect of semi-rigid locking screws on the stiffness of a fracture-fixation construct: A conceptual finite-element study

Advances in Mechanical Engineering, 2019
Strong stiffness provided by locking-plate system has resulted in nonunion and delayed union for long bone fracture. Longer bone plate can lengthen the working length to reduce the structural stiffness of the fixation device but will enlarge skin ...
Xiao-Hua Pan, Wen-Chuan Chen, Kun-Jhih Lin, Kang-Ping Lin, Cheng-Lung Tsai, Hung-Wen Wei   +5 more
doaj   +1 more source

Functional outcomes of extra-articular scapula fracture fixation with distal humeral Y-type locking plate: a retrospective study

Journal of Orthopaedic Surgery and Research, 2019
Background This study aimed to compare the functional outcomes of the Y-type locking plate with the straight reconstruction locking plate for severe displaced scapular fractures.
Yuanjun Hu, Huiming Shi, Fei Wang, Guangtie Ren, Ruiping Cheng, Zhizhong Zhang   +5 more
doaj   +1 more source

Comparative analysis of functional outcome of anatomical precontoured locking plate versus reconstruction plate in the management of displaced midshaft clavicular fractures

Journal of Orthopaedic Surgery, 2019
Introduction: For the fixation of displaced midshaft clavicular fractures, different plates are available, each with its specific pros and cons. The ideal plating choice remains subject to ongoing discussion.
P Kingsly, M Sathish, N Deen Muhammad Ismail   +2 more
doaj   +1 more source