scholarly journals Fixation of Displaced Midshaft Clavicular Fracture in Adult by Intramedullary Elastic Rod

2021 ◽  
Vol 84 (1) ◽  
pp. 2137-2143
Author(s):  
Abdelrhman Ebrahem Kenan ◽  
Mahmoud Seddik Hasan ◽  
Mohamed Mosa Mohamed Mahmoud
2014 ◽  
pp. 20-24
Author(s):  
Van Minh Nguyen

Objective:To evaluate the effectiveness and side effects, complications of interscalene brachial plexus block with a nerve stimulator for clavicular fracture surgery. Materials and Methods:In a prospective descriptive study, fifty patients received interscalene brachial plexus block for fixation of clavicle fracture. The dose was 7 mg/kg of 1% lidocaine mixed with 1 : 200000 adrenaline. Results:The success rate was 94%, including 4% of patients needed sedation and small amount of narcotic, failure rate was 6%. The minimal stimulating current of the nerve location was 0.46 ±0.08 mA, the onset time of sensory block was 8.86 ±2.65min. There were 3 complications with one Horner’s syndrome and two hoarsenesses. Conclusion:We found that in patients undergoing fixation of clavicle fracture the interscalene block with a nerve stimulator was an effective anesthetic with a low rate of side effects and complications. Key words:Interscalene block, nerve stimulator, clavicular fracture surgery.


2014 ◽  
Vol 35 (9) ◽  
pp. 1012
Author(s):  
Hong-rui WANG ◽  
Jian DING ◽  
Dao-yun CHEN ◽  
Long-xiang SHEN ◽  
Jian-fei TANG ◽  
...  

Author(s):  
Giuseppina Autuori ◽  
Federico Cluni ◽  
Vittorio Gusella ◽  
Patrizia Pucci

In this paper, we yield with a nonlocal elastic rod problem, widely studied in the last decades. The main purpose of the paper is to investigate the effects of the statistic variability of the fractional operator order s on the displacements u of the rod. The rod is supposed to be subjected to external distributed forces, and the displacement field u is obtained by means of numerical procedure. The attention is particularly focused on the parameter s, which influences the response in a nonlinear fashion. The effects of the uncertainty of s on the response at different locations of the rod are investigated by the Monte Carlo simulations. The results obtained highlight the importance of s in the probabilistic feature of the response. In particular, it is found that for a small coefficient of variation of s, the probability density function of the response has a unique well-identifiable mode. On the other hand, for a high coefficient of variation of s, the probability density function of the response decreases monotonically. Finally, the coefficient of variation and, to a small extent, the mean of the response tend to increase as the coefficient of variation of s increases.


Author(s):  
Dominic Vella ◽  
Emmanuel du Pontavice ◽  
Cameron L. Hall ◽  
Alain Goriely

Spherical neodymium–iron–boron magnets are permanent magnets that can be assembled into a variety of structures owing to their high magnetic strength. A one-dimensional chain of these magnets responds to mechanical loadings in a manner reminiscent of an elastic rod. We investigate the macroscopic mechanical properties of assemblies of ferromagnetic spheres by considering chains, rings and chiral cylinders of magnets. Based on energy estimates and simple experiments, we introduce an effective magnetic bending stiffness for a chain of magnets and show that, used in conjunction with classic results for elastic rods, it provides excellent estimates for the buckling and vibration dynamics of magnetic chains. We then use this estimate to understand the dynamic self-assembly of a cylinder from an initially straight chain of magnets.


2011 ◽  
Vol 77 (779) ◽  
pp. 2566-2575
Author(s):  
Hiroki MORI ◽  
Takuo NAGAMINE ◽  
Tatsumi ICHIMURA ◽  
Yuichi SATO

2011 ◽  
Vol 343-344 ◽  
pp. 661-667 ◽  
Author(s):  
Yun Xue ◽  
De Wei Weng ◽  
Gang Ming Gong

Mechanical model of nucleoside and its equilibrium equations are set up, and the mechanical properties on the equilibrium position are analyzed. In the case constraint force and electrostatic attraction between cylinder OH and elastic rod are balanced, the analytic expression of nutation angle of the section and its conditions of existence are given. It is show that the cylinder OH can maintain equilibrium at any range of the precession angle. In the other case when unbanced, there is phenomenon of separation of elastic rod from cylinder OH in the spiral wound 2 circles, and numerical solution of the precession angle at separation points are calculated. Analysis of equilibrium of cylinder H1 illustrates that the generatrix of cylinder H1 and OH are not parallel, and the angle between them is obtained


1999 ◽  
Vol 12 (3) ◽  
pp. 741 ◽  
Author(s):  
Sang Eun Lee ◽  
Il Hyun Nam ◽  
Sang Soo Lee ◽  
Dong Hee Lee ◽  
Keum Joo Lee
Keyword(s):  

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