Results 71 to 80 of about 56,254 (315)

Comparison and prediction of pullout strength of conical and cylindrical pedicle screws within synthetic bone

BMC Musculoskeletal Disorders, 2009
Background This study was designed to derive the theoretical formulae to predict the pullout strength of pedicle screws with an inconstant outer and/or inner diameter distribution (conical screws).
Wu Shing-Sheng, Lu Tung-Wu, Chen Po-Quang, Tsai Wen-Chi, Shih Kao-Shang, Lin Shang-Chih   +5 more
doaj   +1 more source

PIEZO1‐GPX4 Axis Mediates Mechanical Stress‐Induced Vertebral Growth Plate Dysplasia via Ferroptosis Activation

Advanced Science, EarlyView.
Mechanical stress activates PIEZO1 in vertebral growth plate chondrocytes, triggering ferroptosis through direct binding and inhibition of GPX4. This axis promotes lipid peroxidation and pathological ossification, accelerating spinal deformities. Clinical and genetic evidence (Piezo1‐cKO) confirms its role in scoliosis progression.
Fei Chen, Fushuai Peng, Shuqing Chen, Yukun Du, Jianyi Li, Yuanyuan Fan, Zichen Cui, Guanghui Gu, Han Zhang, Zhensong Jiang, Guodong Wang, Xingzhi Jing, Jun Dong, Tao Li, Yongming Xi   +14 more
wiley   +1 more source

Laser Ultrasound Super‐Resolution Imaging for Multi‐Parametric Non‐Invasive Volumetric Characterization of Brain Cancer

Advanced Science, EarlyView.
Laser ultrasound super‐resolution imaging (LUSSI) leverages laser‐generated ultrasound for functional 3D transcranial imaging of brain tumor vasculature. Combined with optoacoustic tomography, it is demonstrated in a glioblastoma model, revealing structural abnormalities, compressed vessels, hemorrhages, and hypoxic regions.
Daniil Nozdriukhin, Yi Chen, Shuxin Lyu, Daniel Razansky, Xosé Luís Deán‐Ben   +4 more
wiley   +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

Osteogenesis and Morphology of the Peri-Implant Bone Facing Dental Implants

The Scientific World Journal, 2004
This study investigated the influence of different implant surfaces on peri-implant osteogenesis and implant face morphology of peri-implant tissues during the early (2 weeks) and complete healing period (3 months).
Marco Franchi, Ester Orsini, Alessandra Triré, Marilisa Quaranta, Desirée Martini, Gabriella Giuliani Piccari, Alessandro Ruggeri, Vittoria Ottani   +7 more
doaj   +1 more source

Mesenchymal Stromal Cells Play an Analgesic Role Through a Npy2r Sensory Neuron‐Mediated Lung‐to‐Brain Axis

Advanced Science, EarlyView.
Mesenchymal stromal cells (MSC) are considered a promising alternative for neuropathic pain (NP) treatment, but underlying mechanisms remain elusive. Huang et al. illustrate that a Npy2r sensory neuron‐related lung–brain axis contributes to MSC analgesia.
Jing Huang, Taihe Zhou, Yueming Sun, Yuanchen Ma, Yiwen Deng, Keyu Chen, Ruijie Li, Yuan Qiu, Tao Wang, Xiaoyong Chen, Li Huang, Lu Zhu, Xueyi Tu, Ying Wang, Zheming Liu, Rouchen Lin, Yunli Tong, Yuantao Li, Heshe Li, Lin Nie, Rui Fang, Jianqi Feng, Xuhong Wei, Xia Feng, Andy Peng Xiang, Xiaoran Zhang   +25 more
wiley   +1 more source

Shear Stress Targeted Delivery of Nitroglycerin to Brain Collaterals Improves Ischaemic Stroke Outcome

Advanced Science, EarlyView.
Shear‐activated nanoparticles carrying nitroglycerin selectively target high‐shear stress collateral vessels during ischaemic stroke, enhancing blood flow to at‐risk brain without systemic side effects. This novel approach significantly improves outcomes in animal models, outperforming conventional nitroglycerin delivery.
Magdalena Litman, Sara Azarpeykan, Rebecca J Hood, Kristy Martin, Debbie Pepperall, Daniel Omileke, Fern Williams, Oktay Uzun, Deen Bhatta, Yuen K Yong, Alex Chan, Nicholas Hough, Sarah Johnson, Pablo Garcia Bermejo, Ferdinand Miteff, Carlos Garcia Esperon, Yvonne Couch, Alastair M Buchan, Neil J Spratt, Netanel Korin, Donald E Ingber, Daniel J Beard   +21 more
wiley   +1 more source

Assessment of Calcium Carbonate Coating on Osseointegration of Commercially Pure Titanium Implant by Torque Removal Test and Histomorphometric Analysis

Journal of Baghdad College of Dentistry, 2017
Background: One of the most important methods to replace lost teeth is dental implants. In order to increase the strength of connection of the implant with the jaw bone to provide early loading after placement, implant is coated by different coating ...
Mustafa S. Mahmood, Shatha S. Al-Ameer   +1 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

Biodegradable Zinc‐Based Alloys for Guided Bone Regeneration Membranes: Feasibility, Current Status, and Future Prospects

Advanced Science, EarlyView.
Recent research has shown that biodegradable metals based on zinc (Zn) may be used as guided bone regeneration (GBR) membrane materials. This study examines their viability from the standpoints of material science and biology, reports on the state of research on Zn‐based GBR membranes, and suggests specific development plans based on the potential and ...
Kai Chen, Ping Li, Qiang Guan, Xuenan Gu, Li Zhao, Linjun Huang, Chenyang Huang, Yu Qin, Chunhao Yu, Ting Zhang, Hejia Li, Yongcan Huang, Yufeng Zheng   +12 more
wiley   +1 more source