Results 41 to 50 of about 81,243 (309)

Craniocaudal cyclic load improves risk assessment of lumbar pedicle screw loosening: finite element analysis based on computer tomography

Frontiers in Bioengineering and Biotechnology
BackgroundPedicle screw loosening (PSL) is a frequent complication in osteoporotic patients undergoing spinal fixation, yet effective risk assessment methods are limited.
Chenyu Jiang, Hanqiang Ouyang, Hanqiang Ouyang, Yali Li, Ning Lang, Yan Zhang, Liang Jiang, Liang Jiang, Huishu Yuan   +8 more
doaj   +1 more source

Role of surgeon handedness in transpedicular screw insertion

Acta Orthopaedica et Traumatologica Turcica, 2020
Objective: The aim of this study was to determine the role surgeon handedness plays in transpedicular screw placement. Methods: The study included 269 pedicle screws inserted by two right-handed surgeons who stood on different sides of patients and ...
Onur Yaman, Emre Acaroglu
doaj   +1 more source

D4F‐Functionalized Ceria Nanozyme‐CasRx Platform Suppresses STING and Reprograms the Renal Immune Niche in Acute Kidney Injury

Advanced Science, EarlyView.
D4F‐functionalized ceria nanozyme–CasRx nanoparticles preferentially target renal macrophages through SR‐B1‐mediated uptake in ischemia–reperfusion injury. Ceria scavenges excessive ROS, while CasRx silences STING signaling, shifting macrophages toward a less inflammatory, pro‐resolving state and increasing the proportion of regulatory T cells.
Weibo Chen, Ming Li, Xuesheng Wang, Jiajia Sun, Ziyuan Zhang, Yongfeng Gong, Benkang Shi, Nengwang Yu, Yunuo Mao, Shengtian Zhao, Xiulin Zhang, Liqiang Guo   +11 more
wiley   +1 more source

C1-C3 lateral mass fusion for type IIa and type III Hangman′s fracture

Journal of Craniovertebral Junction and Spine, 2012
Hangman′s fractures, also known as traumatic spondylolisthesis of axis, can be managed either conservatively with immobilization or by surgery. Surgery is usually indicated in cases with instability or failure of conservative treatment.
Natarajan Muthukumar
doaj   +1 more source

ROS‐Responsive Nanoparticle Delivery of Dexmedetomidine Protects the Gut Vascular Barrier After Intestinal Ischemia/Reperfusion via the HDAC‐H3K27ac‐TCF4 Axis

Advanced Science, EarlyView.
A low dose of dexmedetomidine, delivered by ROS‐responsive nanoparticles, preferentially accumulates in the ischemic intestine and restores gut vascular barrier integrity after ischemia/reperfusion injury. This nanoparticle‐based strategy prevents bacterial translocation and liver damage without cardiorespiratory side effects, working through HDAC ...
Hu‐Fei Zhang, Jian‐Tong Shen, Hua‐Hua Zhang, Si‐Qi Gao, Ji‐Ao Wang, Yue‐Ling Wang, Mei‐Ling Li, Zi‐Meng Liu, Yi‐Nan Zhang, Yan Li, Xu‐Yu Zhang   +10 more
wiley   +1 more source

Seed‐cone architecture of Pararaucaria utahensis Gee, Howell et Dayvault sp. nov. (Cheirolepidiaceae) from the Upper Jurassic Morrison Formation of Utah, USA

American Journal of Botany, EarlyView.
Abstract Premise Although Pararaucaria seed cones were first described 90 years ago, only in the last dozen years have we discovered the greater extent of the species diversity and paleogeographic range of the genus. Pararaucaria is now known across the mid‐latitudes of the Lower Jurassic to Lower Cretaceous in the northern and southern hemispheres ...
Carole T. Gee, Mariah M. Howell, Richard D. Dayvault   +2 more
wiley   +1 more source

Three-dimensional assessment of pedicular screws in thoracic and lumbar fractures using free-hand technique [PDF]

The Egyptian Orthopaedic Journal, 2016
IntroductionSeveral sophisticated image-guided modalities have been developed to improve the accuracy of screw placement; however, such modalities may increase healthcare costs and radiation exposure to the patient, and the clinical efficacy compared ...
Tarek El-Fiky, Amin Abd EL-Razek
doaj   +1 more source

A CT-based study of the thoracic spine pedicle and pedicle-rib unit morphometry in a Kenyan population [PDF]

, 2019
Background: The use of pedicle screws in thoracic spine fixation is guided by the morphometric characteristics of the thoracic pedicle and thoracic pedicle-rib unit.Objective: To document the dimensions of the thoracic pedicle and the pedicle-rib  unit ...
Muteti, E.N., El Badawi, M.G.Y.
core   +1 more source

Review of the Molecular and Developmental Basis of Myhre Syndrome, Bench Research

American Journal of Medical Genetics Part C: Seminars in Medical Genetics, EarlyView.
ABSTRACT Myhre syndrome (MS) is a connective‐tissue disorder within the acromelic dysplasia spectrum. It is characterized by congenital craniofacial, skeletal, cutaneous anomalies, respiratory, cardiovascular along with intellectual disability, deafness, and progressive fibrosis.
Camille Viaut, Valerie Cormier‐Daire
wiley   +1 more source

A biomechanical comparison of polymethylmethacrylate-reinforced and expansive pedicle screws in pedicle-screw revisions [PDF]

, 2009
Objectives: Different techniques and choices exist for revision of pedicle screws, two of which are pedicle screw combined with cement augmentation and expansive pedicle screw fixation.
Erdem, Mehmet, Asci, Murat, Kelestemur, M. Halidun, Sen, Cengiz, Bostan, Bora, Gunes, Taner, Esenkaya, Irfan, Kelestemur, Mehmet Halidun   +7 more
core   +1 more source