Results 71 to 80 of about 1,046,684 (289)

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

open access: yesFoot & 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   +8 more
doaj   +1 more source

Electronic Chip‐Mimetic Medical Implants for Controllable Sonothermal Treatments

open access: yesAdvanced Science, EarlyView.
Inspired by the thermal effect of working electronic chips, which consist of various heterostructures, an sonothermal‐responsive platform has been developed through constructing metal‐semiconductor interface on implants. Biofilm infection and deep vein thrombosis can be successfully treated by controllable ultrasound treatments.
Zhengdong Zhang   +10 more
wiley   +1 more source

Force‐Electric Nanotentacles of Tantalum Implant Accelerate Cellular Energy Metabolism/Crosstalk for Immunomodulation‐Vascularized Bone Integration

open access: yesAdvanced Science, EarlyView.
A biomimetic force‐electric nanotentacle‐enabled tantalum (Ta) implant with surface‐nanostructured LiTaO3 (n‐LiTaO3) was first developed via laser nanofabrication combined with Li+‐induced in situ reaction, enabling the transduction of ultrasound into bioelectrical cues.
Taixing Zhang   +15 more
wiley   +1 more source

The Influence of Design Features in the Biomechanical Performance of a Fixator for the Lumbar Spine [PDF]

open access: yes, 1997
PhDSpinal fixation systems using pedicular screws have gained popularity in manging the damaged spine. However, the loading to which individual components of a fixator are exposed are largely unknown.
Alkalay, R.N., Alkalay, Ron N.
core   +2 more sources

Influence of Screw Length and Bone Quality on Pedicle Screw Anchorage Under Cyclic Fatigue Loading

open access: yesGlobal Spine Journal
Study Design Cadaveric biomechanical analysis. Objectives The specific vertebral region that contributes most critically to pedicle screw fixation remains controversial.
Friederike Eva Roch MD   +8 more
doaj   +1 more source

Abstract Representation of Movement Parameters in Basal Ganglia Output

open access: yesAdvanced Science, EarlyView.
The basal ganglia output provides a scalable velocity/position signal across behavioral contexts, supporting the idea that these variables are represented in the brain as abstract entities rather than as fixed changes in joint angles or specific sets of body effectors.
Ana Silvia Báez‐Cordero   +3 more
wiley   +1 more source

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

open access: yesJournal 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   +2 more
doaj   +1 more source

Smart Bioinks for 4D Bioprinting: Requirements, Design, and Applications

open access: yesAdvanced Science, EarlyView.
Smart bioinks empower 4D‐bioprinted constructs to dynamically adapt and remodel in response to stimuli, effectively biomimicking native tissues. Artificial Intelligence (AI) and Machine Learning (ML) play a guiding role in their rational design by optimizing relevant properties.
Shangsi Chen   +11 more
wiley   +1 more source

Surgical Strategies to Improve Fixation in the Osteoporotic Spine: the Effects of Tapping, Cement Augmentation, and Screw Trajectory

open access: yesGlobal Spine Journal, 2014
Study Design Biomechanical study of pedicle screw fixation in osteoporotic bone. Objective To investigate whether it is better to tap or not tap osteoporotic bone prior to placing a cement-augmented pedicle screw.
Craig A. Kuhns MD   +3 more
doaj   +1 more source

Engineering Spatially Localized Bioactive Microenvironments in Assembly Implants for Spatially Extended Bone Ingrowth

open access: yesAdvanced Science, EarlyView.
An assembly porous titanium/β‐TCP implant is developed to establish a spatially programmable osteogenic microenvironment for enhanced osseointegration. By decoupling mechanical support from bioactive ion release, localized ionic gradients generated from the β‐TCP module direct osteogenic activity and bone ingrowth toward the porous titanium framework ...
Heng Zhang   +5 more
wiley   +1 more source

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