Results 71 to 80 of about 1,900,237 (384)

Reducing the risk of impaired bone apposition to titanium screws with the use of fibroblast growth factor-2−apatite composite layer coating

Journal of Orthopaedic Surgery and Research, 2017
BackgroundLoosening of screws is a common problem in orthopedic and maxillofacial surgery. Modifying the implant surface to improve the mechanical strength of screws has been tried and reported. We developed screws coated with fibroblast growth factor-2 (
Kengo Fujii, A. Ito, H. Mutsuzaki, S. Murai, Y. Sogo, Y. Hara, M. Yamazaki   +6 more
semanticscholar   +1 more source

An Organ‐on‐Chip Platform for Strain‐Controlled, Tissue‐Specific Compression of Cartilage and Mineralized Osteochondral Interface to Study Mechanical Overloading in Osteoarthritis

Advanced Healthcare Materials, EarlyView.
A mechanically active OsteoChondral Unit (OCU)‐on‐Chip platform mimicking the OCU's functional anatomy and the strain gradient across the osteochondral interface is presented. Upon compartment‐specific hyperphysiological compression, the model replicates mechanisms observed in osteoarthritis (OA) progression, such as calcium crystal accumulation ...
Andrea Mainardi, Anastasiya Börsch, Paola Occhetta, Robert Ivanek, Martin Ehrbar, Lisa Krattiger, Philipp Oertle, Marko Loparic, Ivan Martin, Marco Rasponi, Andrea Barbero   +10 more
wiley   +1 more source

Novel Dual-Threaded Pedicle Screws Provide Fixation Stability That Is Comparable to That of Traditional Screws with Relative Bone Preservation: An In Vitro Biomechanical Study

Applied Sciences, 2022
Replacement with larger diameter screws is always used in pedicle screw loosening but carries a risk of pedicle wall violation. A pedicle screw with more preserved bone stock is the preferred primary fixation choice.
Ming-Kai Hsieh, Yun-Da Li, Yun-Ja Hsu, Tsung-Ting Tsai, Po-Liang Lai, De-Mei Lee, Ching-Lung Tai   +6 more
doaj   +1 more source

Surgical technique: Tscherne-Johnson extensile approach for tibial plateau fractures. [PDF]

, 2013
BackgroundThe standard approach to lateral tibial plateau fractures involves elevation of the iliotibial band (IT) and anterior tibialis origin in continuity from Gerdy's tubercle and metaphyseal flare.
Johnson, Eric E, Osuji, Chukwunenye, Timon, Stephen   +2 more
core   +1 more source

Uniting 4D Printing and Melt Electrowriting for the Enhancement of Regenerative Small Diameter Vascular Grafts

Advanced Healthcare Materials, EarlyView.
A hybrid 4D printing strategy enables the fabrication of shape‐morphing, mechanically reinforced tubular constructs for vascular tissue engineering. By combining alginate‐methylcellulose hydrogels with melt electrowritten polycaprolactone fibers and protein‐based functionalization, this platform supports spatially organized co‐cultures of fibroblasts ...
Max von Witzleben, Akvilė Gasiūnaitė, Marlene Ihle, Ashwini Rahul Akkineni, Kathleen Schütz, Tilman Ahlfeld, Michael Gelinsky, Anja Lode, Sarah Duin   +8 more
wiley   +1 more source

Biomechanical analysis of a cranial Patient Specific Implant on the interface with the bone using the Finite Element Method

, 2017
- New advance technologies based on reverse engineering , design and additive manufacturing, have expanded design capabilities for biomedical applications to include Patient Specific Implants (PSI). This change in design paradigms needs advanced tools to
Díaz, J., González-Estrada, Octavio Andrés, López, C.   +2 more
core   +1 more source

Towards an Implantable Vestibular Prosthesis: The Surgical Challenges [PDF]

, 2007
Published ...
Constandinou, T G, Doumanidis, C C, Georgiou, J, Toumazou, C   +3 more
core   +1 more source

Tent screws: Predictable guided bone regeneration

Journal of Indian Society of Periodontology, 2023
Abstract Bone regeneration of large maxillary and mandibular alveolar ridge defects is clinically challenging. Various techniques have been described for the reconstruction of these deficiencies before implant placement. The tent screw-pole technique is one of the effective methods available for clinicians to perform the predictable ...
Farhan Durrani, Preeti Singh, Aishwarya Pandey, Kaushal Pati Tripathi, J P Vishnu, Fouzia Imran, Aabida Taslim   +6 more
openaire   +3 more sources

A Modular Perfusion Bioreactor Platform for Simulating Bone Regeneration and Fracture Healing: Integrating Mechanical Loading and Dual Perfusion for Advanced In Vitro Models

Advanced Healthcare Materials, EarlyView.
A modular bioreactor platform was developed in order to replicate bone homeostasis and pathology, thereby integrating mechanical loading, dynamic perfusion, and a 3D‐printed microfluidic chamber. With precise control of environmental parameters and dual perfusion for composite tissue models, the system enhances physiological relevance for studying bone
Moritz Pfeiffenberger, Alexandra Damerau, Johannes Plank, Adel Ahmed, Mario Thiele, Jan Saam, Paula Hoff, Timo Gaber, Frank Buttgereit   +8 more
wiley   +1 more source

Biomechanical evaluation of the fixation strength of lumbar pedicle screws using cortical bone trajectory: a finite element study.

Journal of Neurosurgery : Spine, 2015
OBJECT Cortical bone trajectory (CBT) maximizes thread contact with the cortical bone surface and provides increased fixation strength. Even though the superior stability of axial screw fixation has been demonstrated, little is known about the ...
Keitaro Matsukawa, Y. Yato, Hideaki Imabayashi, N. Hosogane, T. Asazuma, K. Nemoto   +5 more
semanticscholar   +1 more source