Results 41 to 50 of about 55,903 (167)

Fracture Compression and Construct Stability with Variable Pitch Locking Screws in Cadaveric Specimens

Foot & Ankle Orthopaedics
Category: Trauma; Basic Sciences/Biologics Introduction/Purpose: A variable pitch locking screw is intended to provide interfragmentary compression combined with fixed angle stability of locking plate constructs.
Zachary A. Koroneos BS, Shelby Alwine BS, Peter Tortora BS, Michaela D. Pitcher BS, Christian Benedict BS, Hwabok Wee PhD., Allen Kunselman MA, Greg Lewis PhD., Michael Aynardi MD   +8 more
doaj   +1 more source

A novel model of locking plate and locking spongious screw: a biomechanical in vitro comparison study with classical locking plate

Journal of Orthopaedic Surgery and Research
Background Locking plates are commonly used for the fixation of comminuted, periprosthetic and osteoporotic bone fractures. These plates are secured to the bone with screws, creating a stable connection with fixed angle between the plate and the screws ...
Fatih Parmaksizoglu, Sinan Kilic, Onur Cetin   +2 more
doaj   +1 more source

Desenvolvimento de parafusos de osso bovino: método de usinagem e estudo metrológico com projetor de perfil Bovine bone screws development: machining method and metrological study with profile projector

Acta Ortopédica Brasileira, 2006
Parafusos confeccionados de osso são pouco estudados na literatura. Aspectos estruturais, mecânicos e relativos a osteointegração e osteoindução são importantes tópicos de pesquisa a serem abrangidos previamente ao uso in vivo de implantes de osso ...
Davi P. Haje, José B. Volpon
doaj   +1 more source

Dynamic Torque Limitation vs Static Torque Limitation for Bone Screws in Pig Bone

Current Directions in Biomedical Engineering
Correctly torquing bone screws is important to achieve good patient outcomes. An automated system has been previously proposed that may allow more objective torquing of bone screws. Here the system is tested vs. a static torque limit in pig bone.
Wilkie Jack, Richard Jordan, Joshi Aditya, McFarlane Zoe, Staiger Mark, Rauter Georg, Möller Knut   +6 more
doaj   +1 more source

Posterior fusion of the occipital axis in children with upper cervical disorder using both C2 pedicle and laminar screws (C2 hybrid screws)

Spine Surgery and Related Research, 2018
Introduction: An occipital-cervical surgery for children is challenging for surgeons because of the immature bone quality, extensive anatomical variability, and small osseous structures.
Kenyu Ito, Shiro Imagama, Kei Ando, Kazuyoshi Kobayashi, Mikito Tsushima, Akiyuki Matsumoto, Masayoshi Morozumi, Satoshi Tanaka, Masaaki Machino, Yoshihiro Nishida, Naoki Ishiguro   +10 more
doaj   +1 more source

Osseointegration of Self-Drilling Titanium Screws in the Hole Smaller than the Screw Core in the Male Rabbit

Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca: Veterinary Medicine
Inserting orthopedic screws into a hole that is too small can produce excessive mechanical forces that cause osteocyte death and difficulty carrying out bone repair processes. The aim of the study was to evaluate the osseointegration of titanium screws 6
Vasile DUMA, Nicușor-Valentin OROS, Adrian Florin GAL, Maria-Cătălina MATEI-LAȚIU, Cristian Adrian RAȚIU, Vasile RUS, Cristian Olimpiu MARTONOS, Bogdan Cătălin ALEXANDRU, Liviu Ioan OANA   +8 more
doaj   +1 more source

The influence of “kickstand” screws on the mechanical performance of a lateral distal femoral plate: a finite element analysis

Bone & Joint Research
Aims: Lateral locked plating of distal femoral fractures is widely reported, yet there remains a 9% to 19% incidence of mechanical failure. Obliquely directed “kickstand screws”, from the metaphyseal portion of a plate toward far-sided articular ...
Alex Trompeter, Alexis Christen, Claus Gerber, Bernhard Hofstaetter, Felix Wipf, Jason Lowe   +5 more
doaj   +1 more source

Cannulated versus Non-Cannulated Cancellous Screw Fixation for Femoral Neck Fractures: A Synthetic Bone Biomechanical Study

Journal of Orthopaedic Surgery, 2015
Purpose. To compare the compressive strength of cannulated versus non-cannulated cancellous screws for undisplaced femoral neck fractures in synthetic bones. Methods.
AW Gardner, MZ Toh, KSA Yew, DTT Lie, SM Chou   +4 more
doaj   +1 more source

Evaluation of the efficacy of modal analysis in predicting the pullout strength of fixation bone screws. [PDF]

JOR Spine, 2022
Einafshar M, Hashemi A, Kiapour A.
europepmc   +1 more source

Assessing the Accuracy and Safety Thresholds of Patient-Specific Screw Guide Template System in Cervical and Thoracic Spine Surgeries Using DAST Measurements

Spine Surgery and Related Research
Introduction: To analyze the reliability of the newly developed patient-specific Screw Guide Template (SGT) system as an intraoperative navigation device for spinal screw insertion. Methods: We attempted to place 428 screws for 51 patients.
Shuichi Kaneyama, Taku Sugawara
doaj   +1 more source