Results 41 to 50 of about 112,145 (227)

A novel UHMWPE anchor for improving the pullout resistance of pedicle screws

Frontiers in Bioengineering and Biotechnology
IntroductionThe ability to maintain bone purchase and resist pullout is considered a basic requirement for pedicle screws. However, poor bone density or oversized pilot holes can increase the risk of screw loosening and pullout.
Che-Kuang Lin, Che-Kuang Lin, Fu-Shan Jaw, Tai-Horng Young   +3 more
doaj   +1 more source

Comparison of intraoperative O-arm- and conventional fluoroscopy (C-arm)-assisted insertion of pedicle screws in the treatment of fracture of thoracic vertebrae

Journal of Orthopaedic Surgery, 2017
Purpose: To introduce the intraoperative O-arm-assisted pedicle screw insertion without any navigation system in the treatment of thoracic vertebrae fracture and compare it to conventional fluoroscopy (C-arm)-assisted pedicle screw insertion technique ...
Hao Liu, Yimeng Wang, Bin Pi, Zhonglai Qian, Xiaoyu Zhu, Huilin Yang   +5 more
doaj   +1 more source

Assessing the Intraoperative Accuracy of Pedicle Screw Placement by Using a Bone-Mounted Miniature Robot System through Secondary Registration. [PDF]

PLoS ONE, 2016
Pedicle screws are commonly employed to restore spinal stability and correct deformities. The Renaissance robotic system was developed to improve the accuracy of pedicle screw placement.In this study, we developed an intraoperative classification system ...
Keng-Liang Kuo, Yu-Feng Su, Chieh-Hsin Wu, Cheng-Yu Tsai, Chih-Hui Chang, Chih-Lung Lin, Tai-Hsin Tsai   +6 more
doaj   +1 more source

The Impact of Aging on the Anatomical Course of the Azygos Vein: A Retrospective, Computed Tomography Study

Clinical Anatomy, EarlyView.
ABSTRACT The azygos vein (AV) is typically described as ascending vertically to the right of the vertebral column before arching anteriorly to drain into the superior vena cava. However, a small number of studies suggest that it is found leftward in older adults.
Lauren R. Hector, Hania Paverd, Arthikkaa Thavakumar, Cecilia Brassett, Timothy J. Sadler   +4 more
wiley   +1 more source

Single‐Side Iatrogenic Pedicle Injury May Trigger an Increased Risk of Contralateral Screw Loosening: An In Silico Study

JOR Spine
Background Screw loosening is a frequently reported complication following pedicle screw fixation, resulting in various adverse outcomes. The primary trigger for screw loosening is biomechanical deterioration.
Jiexiang Yang, Junjie Chen, Guoyou Wang, Lijunpeng Jia, Yingguang Zhou, Jingchi Li   +5 more
doaj   +1 more source

A novel system for accurate lumbar spine pedicle screw placement based on three-dimensional computed tomography reconstruction

Journal of Orthopaedic Translation, 2020
Objectives: The accuracy of pedicle screw placement strongly affects the outcome of spinal surgery and has mainly relied on the surgeons’ experience. There is no simple, low-cost, and effective pedicle screw placement system to assist new spinal surgeons
Baozhi Ding, Tangjun Zhou, Jie Zhao
doaj   +1 more source

Safety of Pedicle Screws in Adolescent Idiopathic Scoliosis Surgery [PDF]

Asian Spine Journal, 2017
To review existing publications on the safety of pedicle screw insertions in adolescent idiopathic scoliosis (AIS). Despite having increased risk for neurological and visceral injuries, the use of pedicle screws have led to increased correction rates in ...
Chris Yin Wei Chan, Mun Keong Kwan
doaj   +1 more source

Simultaneous Bi‐Jaw Reconstruction: Double Free Fibula Flap Following Resection of Synchronous Oral Malignancy

Head &Neck, EarlyView.
ABSTRACT Background Simultaneous reconstruction of extensive maxillary and mandibular defects in oncological cases is a complex surgical challenge. Methods We report a case of a 56‐year‐old female with synchronous oral malignancy involving upper and lower alveolus.
Subhendu Khan, Varun Saini, Vikram Singh, Ashish Gulia   +3 more
wiley   +1 more source

A simplified extrapedicular workflow for cement-augmented cannulated pedicle screw fixation in osteoporotic vertebral collapse: a technical note

Interdisciplinary Neurosurgery
Pedicle screw fixation in osteoporotic vertebrae remains challenging because of poor bone quality and limited screw purchase. Cement-augmented cannulated pedicle screws are widely used to improve fixation strength; however, the optimal workflow for screw
Le Hoang Nha, Tran Kien Vu, Do Cong Thuong   +2 more
doaj   +1 more source

Early Postoperative Adverse Events (≤ 30 Days) in Spinal Oncology: Defining the Incidence, Severity, and Predictors in a Mixed Prospective Cohort Including Intradural and Metastatic Spinal Tumors

International Journal of Cancer, EarlyView.
ABSTRACT Complication reporting in spinal tumor surgery remains inconsistently defined. We aimed to quantify the incidence, severity, and spectrum of early (≤ 30 days) postoperative adverse events (AEs) in spinal tumor surgery and to identify predictors of overall and serious complications using standardized severity grading.
Meltem Ivren, Philip Dao Trong, Maximilian Klass, Martin Dugas, Sebastian Ille, Sandro M. Krieg, Pavlina Lenga   +6 more
wiley   +1 more source