scholarly journals Structure Design and Optimization of the C5–C6 Cervical Intervertebral Fusion Cage Using the Anterior Cervical Plate and Cage Fixation System

2020 ◽  
Vol 26 ◽  
Author(s):  
Jiajia Wang ◽  
Zhihui Qian ◽  
Changlei Cui ◽  
Zhijun Guo ◽  
Luquan Ren
Keyword(s):  
Structure Design ◽  
Design And Optimization ◽  
Intervertebral Fusion ◽  
Cervical Plate ◽  
Fusion Cage ◽  
Anterior Cervical Plate ◽  
Fixation System

scholarly journals The anterior cervical plate.

1985 ◽  
Vol 34 (1) ◽  
pp. 359-361 ◽  
Author(s):  
Keiichiro Shiba ◽  
Kunio Sasaki ◽  
Kouichiro Yamano ◽  
Takayoshi Ueta ◽  
Yasushi Asakawa ◽  
...  
Keyword(s):  
Cervical Plate ◽  
Anterior Cervical Plate

Analysis of Thermal Properties of Power Multifinger HEMT Devices

2018 ◽  
Author(s):  
Aleš Chvála ◽  
Robert Szobolovszký ◽  
Jaroslav Kováč ◽  
Martin Florovič ◽  
Juraj Marek ◽  
...  
Keyword(s):  
Temperature Distribution ◽  
Thermal Management ◽  
High Electron Mobility Transistor ◽  
Structure Design ◽  
High Electron ◽  
Design And Optimization ◽  
Chip Temperature ◽  
Materials Used ◽  
On Chip ◽  
Measurement Approach

In this paper, several methods suitable for real time on-chip temperature measurements of power AlGaN/GaN based high-electron mobility transistor (HEMT) grown on SiC substrate are presented. The measurement of temperature distribution on HEMT surface using Raman spectroscopy is presented. We have deployed a temperature measurement approach utilizing electrical I-V characteristics of the neighboring Schottky diode under different dissipated power of the transistor heat source. These methods are verified by measurements with micro thermistors. The results show that these methods have a potential for HEMT analysis in thermal management. The features and limitations of the proposed methods are discussed. The thermal parameters of materials used in the device are extracted from temperature distribution in the structure with the support of 3-D device thermal simulation. The thermal analysis of the multifinger power HEMT is performed. The effects of the structure design and fabrication processes from semiconductor layers, metallization, and packaging up to cooling solutions are investigated. The analysis of thermal behavior can help during design and optimization of power HEMT.

Strength Analysis of Parallel Grooved Drum

2013 ◽  
Vol 387 ◽  
pp. 115-119
Author(s):  
Qing Zhang ◽  
Kun Zhao ◽  
Ying Yue Xiao ◽  
Xian Rong Qin ◽  
Yuan Tao Sun ◽  
...  
Keyword(s):  
Stress Distribution ◽  
Wall Thickness ◽  
Structure Design ◽  
Strength Analysis ◽  
Design And Optimization ◽  
Simulation Results

Only the basic wall thickness of drum is taken under consideration in traditional parallel grooved drum strength analysis, which is quite conservative for ignoring the thickness of the groove. So in this paper, it is aimed at comparing the strength simulation results for two drum models with and without the thickness of the groove and analyzing the stress distribution of the drum structure, which provides reference for the structure design and optimization of the drum.

Clinical experience with a new load-sharing anterior cervical plate

2002 ◽  
Vol 1247 ◽  
pp. 563-579 ◽  
Author(s):  
Ronald I Apfelbaum ◽  
Andrew T Dailey ◽  
Scott Soleau ◽  
Jose Barbera
Keyword(s):  
Clinical Experience ◽  
Load Sharing ◽  
Cervical Plate ◽  
Anterior Cervical Plate

Does smoking have an impact on fusion rate in single-level anterior cervical discectomy and fusion with allograft and rigid plate fixation?

2013 ◽  
Vol 19 (5) ◽  
pp. 527-531 ◽  
Author(s):  
Myles Luszczyk ◽  
Justin S. Smith ◽  
Jeffrey S. Fischgrund ◽  
Steven C. Ludwig ◽  
Rick C. Sasso ◽  
...  
Keyword(s):  
Plate Fixation ◽  
Fusion Rate ◽  
Anterior Cervical Discectomy ◽  
Cervical Disc ◽  
Cervical Discectomy ◽  
Single Level ◽  
Significant Difference ◽  
Solid Fusion ◽  
Cervical Plate ◽  
Anterior Cervical Plate

Object Although smoking has been shown to negatively affect fusion rates in patients undergoing multilevel fusions of the cervical and lumbar spine, the effect of smoking on fusion rates in patients undergoing single-level anterior cervical discectomy and fusion (ACDF) with allograft and plate fixation has yet to be thoroughly investigated. The objective of the present study was to address the effect of smoking on fusion rates in patients undergoing a 1-level ACDF with allograft and a locked anterior cervical plate. Methods This study is composed of patients from the control groups of 5 separate studies evaluating the use of an anterior cervical disc replacement to treat cervical radiculopathy. For each of the 5 studies the control group consisted of patients who underwent a 1-level ACDF with allograft and a locked cervical plate. The authors of the present study reviewed data obtained in a total of 573 patients; 156 patients were smokers and 417 were nonsmokers. A minimum follow-up period of 24 months was required for inclusion in this study. Fusion status was assessed by independent observers using lateral, neutral, and flexion/extension radiographs. Results An overall fusion rate of 91.4% was achieved in all 573 patients. A solid fusion was shown in 382 patients (91.6%) who were nonsmokers. Among patients who were smokers, 142 (91.0%) had radiographic evidence of a solid fusion. A 2-tailed Fisher exact test revealed a p value of 0.867, indicating no difference in the union rates between smokers and nonsmokers. Conclusions The authors found no statistically significant difference in fusion status between smokers and nonsmokers who underwent a single-level ACDF with allograft and a locked anterior cervical plate. Although the authors do not promote tobacco use, it appears that the use of allograft with a locked cervical plate in single-level ACDF among smokers produces similar fusion rates as it does in their nonsmoking counterparts.

scholarly journals Effectiveness comparison of Zero-profile interbody fusion implant and anterior cervical plate interbody fusion device: a clinical and radiological study

2020 ◽  
Author(s):  
Jun Zhang ◽  
Xiangyu Tang ◽  
Wei Xiong ◽  
Hua Wu ◽  
Chaoxu Liu ◽  
...  
Keyword(s):  
Interbody Fusion ◽  
Neck Disability Index ◽  
Operation Time ◽  
Degenerative Changes ◽  
Adjacent Segment ◽  
Fusion Device ◽  
Cage Group ◽  
Cervical Plate ◽  
Anterior Cervical Plate ◽  
Interbody Fusion Device

Abstract Purpose This study was to compare the clinical outcomes, radiographic parameters, and complications of anterior cervical discectomy and fusion (ACDF) with a Zero-profile implant (Zero-P) and traditional plate and cage. Methods There were 68 patients received ACDF of single level, 35 patients with Zero-profile implant (Zero-p group) and 33 patients with traditional plate and cage (Cage group), from C3–C7 during 2014 to 2016. Collecting and analyzing of clinical and radiological data were performed. Patients were followed-up at least 1 year after surgery. The operation time, blood loss, Japan Department of Orthopedics Association (JOA) score, pain Visual Analogue Score (VAS), Neck Disability Index (NDI) score and dysphagia score were recorded. Additionally, changes in cervical lordosis, fusion rate and adjacent segment degeneration were analyzed as well. Results For neurologic outcomes, the JOA, VAS and NDI were statistically equivalent between the two groups (P>0.05). For radiographic outcomes, there were no significant differences in the C2-7 Cobb angles, segmental Cobb angle and incidence of subsidence at the final follow-up (P>0.05). No degenerative changes was found in the Zero-p group, whereas 5 patients in the Cage group developed degeneration in adjacent segments (P<0.05). Also, the incidence of postoperative dysphagia is higher in Cage group than in Zero-p group at 3 months and 12 months (P<0.05). Conclusions Both Zero-profile implant and anterior cervical plate interbody fusion device were demonstrated to be effective and safe strategies in this study. Considering the lower incidences of dysphagia and degenerative changes, the Zero-profile implant is a good succedaneum.

Sign in / Sign up

Export Citation Format

Share Document