Early clinical and radiological results of minimally invasive total hip replacement

Introduction It is critical to achieve both proper component positioning and intact muscle balance if satisfactory results are to be attained after total hip replacement (THR). There have been fewer studies on minimally invasive (MI) THR than standard approaches. The objective of this paper is to present the early clinical and radiological results of posterolateral MI THR. Materials and methods The retrospective analysis of the records of patients undergoing posterolateral MI THR surgery between 2011 and 2014 was the basis of this study. 73 hips of 68 patients were included in the study. The acetabular component and femoral stem positions were measured on plane X-rays. Data on preoperative and postoperative hemoglobin and hematocrit values, as well as transfusion amounts, were also studied. The clinical evaluations were carried out with Harris Hip Scores. Results The mean HHS at the 3rd postoperative month was 87.60 (±7.70). Of the 73 cases, 61 were within the Lewinnek safe zone. The mean PMFA was 88.12 (±7.63°), which is within the normal ranges. The mean postoperative hemoglobin value was 9.7 g/dl (±1.3) and the mean postoperative hematocrit value was 29.8% (±3.8). A nondisplaced proximal femoral fracture line was evident on the early postoperative X-ray of one patient. One patient experienced early dislocation caused by acetabular component malpositioning and an early acetabular cup revision was necessary. Conclusion MI posterior approach for THR is a method in which the prosthetic components can be properly placed. Posterolateral MI approaches are safe when THR is performed, and afford satisfactory results. © 2016 Delhi Orthopedic Associatio

The effect of partial replacement of scraped asphalt pavements by coarse aggregate on the compressive strength of concrete under various temperatures

Bu çalışmada doğal agrega kullanımının azaltılması ve oluşan atık malzemelerin geri dönüştürülmesine katkı sağlamak amacıyla karayolu kaplamalarının kazınması sonucu ortaya çıkan kazınmış asfalt malzemelerin (KAM) beton karışımında iri agrega yerine kullanılabilirliği araştırılmıştır. Ayrıca, KAM ikameli betonların bulunduğu ortam sıcaklığı değişiminin basınç dayanımına etkisi de araştırıldı. Bu amaçla 4.0-22.4 mm boyutlarındaki KAM, aynı boyutlardaki agrega yerine beton hacminin % 5, 10, 20 ve 30 oranlarında ikame edildi. Bu şekilde üretilen küp (150 mm) numuneler 28 günlük kürün ardından 24 saat süreyle belirli bir sıcaklıkta (bir set 25 °C, bir set 50 °C ve bir set de 75 °C) bekletildi ve ardından basınç testleri yapıldı. Basınç dayanımları incelendiğinde gerek KAM ikamesinin gerekse ortam sıcaklığının arttırılmasının beton dayanımına olumsuz etkisi gözlemlenmiş olmakla birlikte dayanımları C20/25 ve C30/37 arasında betonlar üretilebilmektedir. Bu çalışma sonucunda karayollarının yenilenmesi veya tamiri sonuncunda ortaya çıkan atıkların iri agrega yerine ikame edilerek değerlendirilebileceği gösterilmiştir. Kazınmış asfalt malzemelerin sadece elenmesi suretiyle maliyetsiz olarak geri dönüştürülmesi sonucunda hem çevrenin korunmasına katkı sağlanacak hem de doğal agrega kaynaklarının hızlı tüketimi engellenecektir.In this study, in order to reduce the use of natural aggregate, the use of reclaimed asphalt pavements (RAP) obtained as a result of scraping of road pavements was investigated in the concrete mix instead of coarse aggregate by simply sieving it. In addition, the effect of the change of ambient temperature in RAP substituted concretes on compressive strength was also investigated. In the experiments for this purpose, the scraped asphalt pavement with dimensions of 4.0-22.4 mm was replaced with aggregate of the same dimensions in the ratio of 5, 10, 20 and 30% of the concrete volume. Cube specimens (150 mm) produced at these ratios were kept at a certain temperature (one set 25 °C, one set 50 °C and one set 75 °C) for 24 hours after 28 days of curing and then compressive tests were performed. When the compressive strength is examined; Although it has been observed that both RAP substitution and increasing the ambient temperature have a negative effect on concrete strength, concrete with strengths between C20/25 and C30/37 can still be produced. With this study, it has been shown that the wastes generated as a result of the renovation or repair of highways can be utilized by substituting for coarse aggregate. As a result of recycling scraped asphalt materials cost-free by only sieving them, both the environmental protection will be contributed and the rapid consumption of natural aggregate resources will be prevented

Elastic Stable Intramedullary Nailing for Pediatric Forearm Fractures: A Retrospective Analysis of Thirty Four Cases

Aim: The purpose of this investigation was to present our institutional experience of 34 pediatric both bone forearm fractures treated with titanium elastic intramedullary nails. Methods: Thirty-four patients, who were treated with titanium elastic nail for both bone forearm fractures diagnosis between 2011 and 2016, were included in the study. Clinical and radiological evaluation of the patients was retrospectively analyzed. Results: Bone healing process was completed for all patients at a mean of 6.6 weeks. The implants were removed at a mean time of 9.7 months from the index operation. Complications, including skin infections at the entry side of the nail, were recorded in three (8.82%) patients. These three patients had type 1 open fracture according to the Gustilo-Anderson classification and were treated with first generation cephalosporins. In a subjective measure of outcome during follow-up, it was observed that 33 patients (97.06%) were very satisfied and one (2.94%) was satisfied; no patient reported being not satisfied. Conclusion: Since titanium elastic nailing is a safe and effective method of treatment with advantages of easy implantation and removal as well as excellent cosmetic and functional results, elastic stable intramedullary nailing is the first treatment option that should be considered in pediatric both bone forearm fractures

"Chinese Virus” as Anchor for Engaging with COVID-19 Information: Anchoring Bias Leading to Racism and Xenophobia

Information dissemination from official sources coupled with adoption of message by the public during a pandemic crisis (COVID- 19) are essential components of collective action aimed at combating virus spread. During the onset of the COVID-19 crisis in the USA, President Donald Trump referred to the Coronavirus outbreak as a result of a “Chinese virus.” The president justified his choice of words given that the virus “originated in China.” Although indeed the virus was reported as originating in Wuhan, China, concerns about the use of the term and xenophobic/racist feelings emerged as a result. Considering that individuals are constantly engaging with information about the severe repercussion of the pandemic; social distancing, constant hand washing, disinfecting surfaces, economic consequences of rapid spread, increased death toll, and changes in our modus vivendi, for example, labeling the pandemic might result in anchoring bias. Anchoring bias is a consequence of random and at times uninformed outset (initial information) influencing perception of subsequent information. Therefore, when individuals attempt to adjust to new information, features of the anchor (initial information) to make judgements of new evidence persist. Thus, “Chinese virus” might inform attitudes towards new information presented on social media. In order to understand repercussions of labeling the pandemic, data is being collected via Tweet stream about COVID-19 to understand emotional content of tweets (emotional content analysis). Terms used to define criteria include “coronavirus,” “corona virus,” “covid-19,” “covid19,” and “Chinese,” “Chinese-virus.” Additionally, by using location-based tweets, scope was limited to tweets within the USA

The influence of alcohol related accidents on health care cost

Introduction: Road traffic accidents are globally leading causes of mortality and morbidity. Alcohol is among the most frequently used pleasure-inducing substances in the world. Use of motor vehicle under the influence of alcohol is completely illegal in some countries. However, it is allowed up to a certain level of eth- anol in blood in other countries. Traffic accidents caused by alcohol consumption are known to cause more harmonhealthofindividuals.Thealcoholaffectsnervoussystem. Alcoholslowsreflexesandimpairsbalance. In other words, alcohol intake reduces capability of individuals while using any motor vehicle. This study aims to search the health care cost of individuals who had traffic accidents under the influence of alcohol.  Methods: This present study included 657 patients who were admitted to the E.R. resulting from traffic accidents between the dates 01.01.2017–01.06.2017. Demographic information of the patients, their time of hospital admission, medical analyses and examinations, the cost of those analyses and examinations, and their ethanol levels were recorded.  Results: 657 patients were included in the study. 460 (68.1) of those patients were males. Their age average was 35.57 ± 15.18. 61 (9.0%) of the patients were seen to have ethanol positive blood. The health care expenditures of ethanol positive patients were found to be 374,75 ± 251,3 TL whereas the expenditures of ethanol free patients were identified to be 283,17 ± 222,72 TL. The health care expenditures of ethanol positive patients were seen to have substantially increased. (p = 0,003).  Conclusions: Alcohol intake is known to be a leading cause of traffic accidents that generally results in deaths and heavy injuries. This present study displays that traffic accidents caused by alcohol consumption increases the cost of health care as well.

Analysis of Public Perception of Multiple Community Issues through Social Media Mining during a Pandemic

The COVID-19 pandemic affected almost every aspect of our lives. It rapidly changed the way we behave in our daily lives, including how we seek and access information. Social media has become pivotal for accessing information about the pandemic, though not all information available is reliable. Therefore, this study uses a social media mining approach to analyze the public’s sentiment during COVID-19 pandemic through social media posts (e.g. Twitter). Social media mining is crucial for understanding information behavior of individuals in a time when collective action is essential. Data is being collected through tweets streaming using terms related to coronavirus (“coronavirus” and “covid19”), and limited to tweets within the USA. Additionally, analysis on the aggregated tweets to understand emotional content of tweets was conducted alongside visual content (memes) related to the pandemic, which were collected for content analysis. Text mining and sentiment analysis serve as an avenue for understanding implicit meaning in social media posts, thus furthering a more complete understanding of messages transmitted via social media related to COVID-19. The analysis will be correlated with other aspects, such as timeline and pertinent activities. Understanding the process for collecting social media data during a world crisis (pandemic), creates a context where social media data can be analyzed through different perspectives, thus leading to a more in-depth understanding of efforts at communication about COVID-19 (education strategies, preventive behaviors, etc.), and the public’s response to the crisis

Experimental Research of the Usability on Double Acting Intensifiers in Hydroforming

The hydroforming method is especially used for forming lightweight materials like aluminum, magnesium alloys, high strength steels or materials that have limited formability. Intensifiers are the most important component of hydroforming presses. Nowadays single-acting intensifiers are used in hydroforming presses. Single-acting intensifiers provide pressurized liquid by forwarding movement of the piston through one direction and their volumes are limited. The mass of the intensifiers increases significantly depending on their liquid volume capacity and this causes high manufacturing costs. For this reason, two or more single-acting intensifiers which bridged in a parallel circuit are used to manufacture bigger products that require a high volume of liquid. But this method is not an economical solution. So double-acting intensifiers can overcome this problem. The pressurized liquid can be obtained during both forward and backward movement of the piston in double-acting intensifiers which work like a pump. This is why double-acting intensifiers have no volume limit on the contrary of single-acting intensifiers. Yet there are sudden pressure drops in double-acting intensifiers caused by returning movements of the piston to pressurize liquid again. This pressure drops cause some problems to use double-acting intensifiers on hydroforming method. The situation of solving this problem to use double-acting intensifiers on the hydroforming method can eliminate limited volume problem and decrease investment cost of hydroforming presses. In this study, the usability of double-acting intensifiers on hydroforming with die method was investigated. Because of the existing hydroforming press, used in experiments, doesn’t contain any double-acting intensifiers, pressure drops obtained by single-acting intensifier to perform simulated experiment. A die was designed and manufactured to synchronize the blank holder force with pressure drops. This die was integrated on the hydroforming press, located on Selcuk University Hydroforming Laboratory, for the success of the process. Performance of improved system was measured as well as repeatability of applying process parameters and product’s geometry were determined. The AA5754 aluminum alloy used processes, both single- and double-acting intensifier, were compared. Limiting drawing ratios were determined for all processes. It is obtained that pressure drops have no negative influence on formability. Moreover, there is no difference observed in thickness distribution which is an indicator of product’s quality and strength. However, when geometric accuracy was investigated then noticed that the pressure drops count has a good influence on product radius. 5.96 mm product radiuses on the process with single-acting intensifier was obtained 5.92 and 5.10 mm by using double-acting intensifier increasing pressure drop’s frequency

Experimental Research of the Usability on Double Acting Intensifiers in Hydroforming

The hydroforming method is especially used for forming lightweight materials like aluminum, magnesium alloys, high strength steels or materials that have limited formability. Intensifiers are the most important component of hydroforming presses. Nowadays single-acting intensifiers are used in hydroforming presses. Single-acting intensifiers provide pressurized liquid by forwarding movement of the piston through one direction and their volumes are limited. The mass of the intensifiers increases significantly depending on their liquid volume capacity and this causes high manufacturing costs. For this reason, two or more single-acting intensifiers which bridged in a parallel circuit are used to manufacture bigger products that require a high volume of liquid. But this method is not an economical solution. So double-acting intensifiers can overcome this problem. The pressurized liquid can be obtained during both forward and backward movement of the piston in double-acting intensifiers which work like a pump. This is why double-acting intensifiers have no volume limit on the contrary of single-acting intensifiers. Yet there are sudden pressure drops in double-acting intensifiers caused by returning movements of the piston to pressurize liquid again. This pressure drops cause some problems to use double-acting intensifiers on hydroforming method. The situation of solving this problem to use double-acting intensifiers on the hydroforming method can eliminate limited volume problem and decrease investment cost of hydroforming presses. In this study, the usability of double-acting intensifiers on hydroforming with die method was investigated. Because of the existing hydroforming press, used in experiments, doesn’t contain any double-acting intensifiers, pressure drops obtained by single-acting intensifier to perform simulated experiment. A die was designed and manufactured to synchronize the blank holder force with pressure drops. This die was integrated on the hydroforming press, located on Selcuk University Hydroforming Laboratory, for the success of the process. Performance of improved system was measured as well as repeatability of applying process parameters and product’s geometry were determined. The AA5754 aluminum alloy used processes, both single- and double-acting intensifier, were compared. Limiting drawing ratios were determined for all processes. It is obtained that pressure drops have no negative influence on formability. Moreover, there is no difference observed in thickness distribution which is an indicator of product’s quality and strength. However, when geometric accuracy was investigated then noticed that the pressure drops count has a good influence on product radius. 5.96 mm product radiuses on the process with single-acting intensifier was obtained 5.92 and 5.10 mm by using double-acting intensifier increasing pressure drop’s frequency

Comparison of Surgical Techniques Used in Ventricular Septal Defect Closure

ABSTRACT Introduction: We compared transatrial closure, tricuspid valve septal detachment, and tricuspid valve chordal detachment techniques for ventricular septal defect (VSD) closure. Methods: Patients who had VSD closure with three different techniques in our clinic between September 2016 and December 2020 were retrospectively reviewed. A total of 117 patients were included in the study. The patients were divided into three groups: group 1, classical transatrial closure; group 2, closure with tricuspid valve septal detachment; and group 3, closure with tricuspid valve chordal detachment. The groups were evaluated by serial transthoracic echocardiography (preoperative, postoperative 1st day, postoperative 1st month). Cardiac rhythm checks and recordings were performed. Results: No residual VSD was observed in early or late periods in any of the groups whose VSD closure was performed with the three different techniques. No severe tricuspid regurgitation (TR) was detected during the early and late postoperative periods of all operating procedures. When the groups were compared in terms of early/late TR after the operation (without TR+trace amount of TR and mild TR+moderate TR were compared), no statistically significant difference was found (P>0,05; P=0,969 and P>0,05; P=0,502). Conclusion: In this study, we found no statistically significant difference between three VSD closure techniques in terms of early TR, late TR, residual VSD, and permanent atrioventricular complete block during postoperative period. We hope that our results will be supported by the results of researches that are being made about this subject in large series

A new modified pararectus approach and visualization: an anatomical study

Introduction: The aim of our study was to visualize all the windows used in the pararectus approach with detailed cadaver images to facilitate better understanding of orthopedic surgeons and, in addition, was to modify the incision used in the pararectus approach to a more cosmetic bikini incision. Materials and methods: In total, 20 cadavers fixed in 10% formalin were used in this study. Of these cadavers, 14 were male and six were female, with a mean age at death of 57 (42-82 years). The four windows were defined as follows in all the cadavers: pubic, quadrilateral, sacroiliac, and iliac windows. Results: The most important structure at risk in the pubic window was the corona mortis, as it was observed in 12 (60%) cadavers. In men, the spermatic cord was an important structure at risk in the pubic window. The obturator vessels and nerves were the structures at most risk in the quadrilateral window due to their close location with the quadrilateral surface. The obturator nerve on the medial side and at the entrance of the pelvis through the linea terminalis and lumbosacral truncus were the structures at most risk close to the sacroiliac joint in the sacroiliac window