research centers


Search results: Found 161

Listing 1 - 10 of 161 << page
of 17
>>
Sort by

Article
DRUGS AND FRACTURE HEALING: A REVIEW OF LITERATURE��

Authors: Abdullah M Jawad --- Riyad A Hussein, --- Thamer A Hamdan,
Journal: Basrah Journal of Surgery مجلة البصرة الجراحية ISSN: 16833589 / ONLINE 2409501X Year: 2005 Volume: 11 Issue: 1 Pages: 9-19
Publisher: Basrah University جامعة البصرة

Loading...
Loading...
Abstract

racture healing is a physiological process by which bone regenerates itself following injury. It occurs through five stages: haematoma, inflammation, callus formation, consolidation and remodeling1,2. These stages are not sharply demarcated and that two or more stages may be seen at same time in different parts of bone3.

Keywords

FRACTURE --- HEALING


Article
Study Some Physical and Mechanical Properties of Ceramic – Ceramic Fibers Composite

Author: Fadhil Attiya Chyad
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2011 Volume: 29 Issue: 9 Pages: 1631-1640
Publisher: University of Technology الجامعة التكنولوجية

Loading...
Loading...
Abstract

Zirconia fibers have been prepared by convertional method using cotton threadsimpregrated in zirconium oxychloride solution ( ZrOCl2. 8H2O ). X-raydiffraction shows the crystallinity of zirconia and optical microscopy shows thefibers fabrication. Differnet percentage ( 2 ,4 ,8 , 10 and 12 ) of prepared zirconiafibers mixed with ZnO powder.All the specmen sintered at 1250 °C for 2hrs. Physical properties (density andvolume shrinkage) were measured and Mechanicl properties (Vicker ̉shardness,fracture strength and fracture toughness by indentation method ) werecalculated, 10% of fiber content has the maximum values for these properties forthe composite.


Article
The effect of Hand Stainless-Steel and NiTi Rotary file on vertical root fracture.

Loading...
Loading...
Abstract

The aim of this study was to compare the fracture resistance of roots followingroot canal therapy using stainless-steel hand instrumentation (SS), Rotary Profile (PF)instrumentation, Rotary ProTaper instrumentation (PT). Forty-five mandibularpremolars teeth were divided into three groups of 15 teeth each, according to the typeof instrumentation. All root obturated with gutta-percha and AH26 sealer. The rootswere vertically loaded using a universal testing machine. Fracture loads were analysedby ANOVA and LSD test, and fracture patterns were analyzed with Chi-Square.Profile & ProTaper groups have significantly lower fracture load than handinstruments group (P < 0.05). Chi-Square showed a significant differences betweengroups (P < 0.05) .


Article
Etiological spectrum, injury characteristics and treatment outcome of facial fractures: a clinical study of 92 cases

Author: Yahya A. Ali يحيى علي
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2011 Volume: 23 Issue: special issue Pages: 129-133
Publisher: Baghdad University جامعة بغداد

Loading...
Loading...
Abstract

Background: Maxillofacial injuries pose a therapeutic challenges to trauma, maxillofacial and plastic surgeonspracticing in developing countries. This study was carried out to determine the etiology, injury characteristics andmanagement outcome of maxillofacial injuries at Maysan general hospital in Maysan, southern of Iraq fromNovember 2008 to April 2010.Patients and methods: The data collected included age, gender, etiology, anatomic site of the fracture andtreatment outcome. A total of 134 facial fractures were found in 92 patients,Results: most fractures occurred in adults with age ranging from 21 to 30 years. Men were more affected thanwomen, with a male-female ratio of 4.1:1. Road traffic accidents (RTAs) were the major cause of trauma, followed byinterpersonal violence and gunshots and missiles. When the relation between the gender and the etiology of facialfractures was analyzed, a significant relation was noted between these variables. There was also a relation betweenthe patients’ age and the site of the fractures. The mandible was found to be the most commonly fractured bone inthe facial skeleton, followed by the zygomatic complex. Surgical or non-surgical approach was chosen according tocharacters of each case. There were significant differences between the kind of treatment applied and the site ofthe fracture. Surgical site infection and malocclusion were the most prevalent complications.Conclusion: Road traffic accidents remain the major etiological factor of maxillofacial injuries in our setting. Measureson prevention of road traffic accidents should be strongly emphasized in order to reduce the occurrence of theseinjuries


Article
Prediction of Fracture Pressure Gradient in Halfaya Oilfield
التنبؤ بتدرج ضغط التكسير في حقل حلفايه النفط

Authors: Neaam F. Hussain --- Faleh H. M. Al Mahdawi
Journal: Iraqi Journal of Chemical and Petroleum Engineering المجلة العراقية للهندسة الكيمياوية وهندسة النفط ISSN: 19974884/E26180707 Year: 2019 Volume: 20 Issue: 1 Pages: 1-7
Publisher: Baghdad University جامعة بغداد

Loading...
Loading...
Abstract

Fracture pressure gradient prediction is complementary in well design and it is must be considered in selecting the safe mud weight, cement design, and determine the optimal casing seat to minimize the common drilling problems. The exact fracture pressure gradient value obtained from tests on the well while drilling such as leak-off test, formation integrity test, cement squeeze ... etc.; however, to minimize the total cost of drilling, there are several methods could be used to calculate fracture pressure gradient classified into two groups: the first one depend on Poisson’s ratio of the rocks and the second is fully empirical methods. In this research, the methods selected are Huubert and willis, Cesaroni I, Cesaroni II, Cesaroni III, Eaton, and Daines where Poisson’s ratio is considered essential here and the empirical methods selected are Matthews and Kelly and Christman. The results of these methods give an approximately match with the previous field study which has been relied upon in drilling the previous wells in the field and Cesaroni I is selected to be the equation that represents the field under study in general. In the shallower formations, Cesaroni I is the best method; while in deepest formations, Eaton, Christman, and Cesaroni I are given a good and approximately matching. The fracture pressure gradient of Halfaya oilfield range is (0.98 to 1.03) psi/ft.

يعتبر التنبؤ وتقدير تدرج ضغط التكسير عملا مكملاً في تصميم البئر ويجب أن يؤخذ بنظر الاعتبار عند اختيار وزن طين الحفر الآمن وتصميم الأسمنت وتحديد مقعد التغليف الأمثل لتقليل مشاكل الحفر الشائعة. قيمة التدرج الدقيق للكسر الناتجة من الفحوصات التي تجرى على البئر أثناء الحفر مثل leak-off test ،formation integrity test ، cement squeeze ... الخ ؛ ومع ذلك ، لتقليل التكلفة الإجمالية للحفر ، هناك عدة طرق يمكن استخدامها لحساب تدرج ضغط الكسر المصنفة في مجموعتين: الأولى تعتمد على نسبة بواسون للصخور والثانية هي طرق تجريبية بالكامل. في هذا البحث ، الطرق المختارة هي Huubert and willis, Cesaroni I,: Cesaroni II, Cesaroni III, Eaton, and Daines حيث تعتبر نسبة بوايسون ضرورية هنا والأساليب التجريبية المختارة هي Matthews & Kelly و Christman وتعطي نتائج هذه الطرق تطابقًا تقريبًا مع الدراسة الميدانية السابقة التي تم الاعتماد عليها في حفر الآبار السابقة في الحقل وتم اختيار Cesaroni I لتكون المعادلة التي تمثل الحقل تحت الدراسه بصوره عام في الطبقات ذات الاعماق الضحله ، ان طريقة Cesaroni I هي الافضل ؛ بينما في الطبقات العميقه فإن كل من طريقة Eaton, Christman, و CesaroniI تعطي تطابق جيد ومتقارب. ان تدرج ضغط التكسير في حقل حلفايه النفطي يتراوح بين (0.98 و 1.03) psi/ft.


Article
Study of Transverse and Longitudinal Crack Propagation in Human Bone Using the Finite Element Method with MATLAB
دراسة نمو الشق الطولي والعرضي لعظم الانسان باستخدام طريقة العناصر المحدودة بوساطة الماثلاب

Author: Abdullah Dhayea Assi عبدالله ضايع عاصي
Journal: Al-Khwarizmi Engineering Journal مجلة الخوارزمي الهندسية ISSN: 18181171 23120789 Year: 2019 Volume: 15 Issue: 2 Pages: 44-49
Publisher: Baghdad University جامعة بغداد

Loading...
Loading...
Abstract

A finite element is a study that is capable of predicting crack initiation and simulating crack propagation of human bone. The material model is implemented in MATLAB finite element package, which allows extension to any geometry and any load configuration. The fracture mechanics parameters for transverse and longitudinal crack propagation in human bone are analyzed. A fracture toughness as well as stress and strain contour are generated and thoroughly evaluated. Discussion is given on how this knowledge needs to be extended to allow prediction of whole bone fracture from external loading to aid the design of protective systems.

ان اي دراسة باستخدام طريقة العناصر المحدودة قادرة على توقع نمو الشق ومحاكاة توليد الشق ونشأته في العظم الانساني. ان النموذج المادي مطبق في رزمة من برنامج الماثلاب بوساطة طريقة العناصر المحدودة التي تسمح للامتداد الى اي شكل هندسي واي ترتيبه حمل مما يمكن عوامل ميكانيك الكسر من تحليل توليد الشق الطولي والمستعرض في العظم الانساني .ان صلابة الكسر فضلاً عن مخطط الاجهاد والانفعال يولدان ويقيمان كليا. ان المناقشة اعطت كمَاً من المعرفة الضرورية التي تمدد للسماح لتنبؤ بالكسر العظمي الكامل من التحميل الخارجي لمساعدة تصميم الانظمة الوقائية.


Article
Parental Perception of Fever in Children

Authors: Ban Abdul Hameed --- Mahmood Thaher --- Mohammed J Al-Khalidy
Journal: Al-Kindy College Medical Journal مجلة كلية الطب الكندي ISSN: 18109543 Year: 2007 Volume: 4 Issue: 1 Pages: 27-32
Publisher: Baghdad University جامعة بغداد

Loading...
Loading...
Abstract

Back ground : Fever is a common medical problem in children. parents have been shown unrealistic fears of harmful effects of fever in their children. Resulting in inappropriate management of fever in their children.
Objective: the objective of this study was to survey parents about their knowledge andattitude concerning fever in their children.
Methods : The study involved random selection of parents who brought their febrile children to emergency department or out-patient clinics of five teaching and non teaching hospitals in Baghdad from first of October to end of December 2002.
Parents of 400 febrile children were interviewed using a standard questionnaire to obtain sociodemographic information and current knowledge of fever.
Results: Approximately 69% of the respondents were female, 68% their age was in the range of 21-35 years. Seventy seven percent of parents had two or more children. More than 70% of parents demonstrated a poor understanding of definition of fever , maximum temperature of untreated fever and threshold temperature requiring antipyretics . Twenty sevev percent of parents considered temperature less than 38.0 co to be fever, another 27% did not know, the definition of fever, 61% felt that temperature of less than 40,0 co could be dangerous to a child, and 27% could not define high fever. Another 28% believed that if left untreated, temperature could rise to 42.0 co or higher, but 39% could not provide an answer, and about 60% did not know the minimum temperature for administering antipyretics. And 60% did not know the minimum temperature for bathing , or sponging.
Approximately 93% of parents demonstrated fear of consequent body damage from fever , including convulsion ,brain damage ,coma, blindness and even death.
Conclusion: parental misconception about fever reflects the lack of active health education. Health professionals have apparently not done enough to educate parents on this common medical problem and it,s consequences.
Key Words: fever , hyperthermia, hyperpyrexia.


Article
5 Years Experience in IntracapsularFemoral Neck Fracture Management

Author: Ali H Khudair
Journal: Al-Kindy College Medical Journal مجلة كلية الطب الكندي ISSN: 18109543 Year: 2007 Volume: 4 Issue: 1 Pages: 5-10
Publisher: Baghdad University جامعة بغداد

Loading...
Loading...
Abstract

Background: Displaced intracapsular fracture of the femoral neck remain a challenging issue despite the advancement in the ways of treatment .The purpose of this study is to assess the results of different methods of treatment in different age groups.
Methods: This study was conducted over a period from (1998-2004) on 26 patients, with ages of 5 – 85 years with intracapsular fracture of the femoral neck due to different insults in Tikrit teaching hospital. Open reduction and internal fixation was done to those patients of<60 years of age, while uncemented Austin-Moore hemiarthroplasty was conducted in patients of >60 years old. Patients were followed for 6-12 months for any complication.
Results: The main age group among the patients were those >60 years [13 (50%)]. The main cause of fracture was fall from standing position in 19 (73%), were treated by uncemented Austin-Moore prostheses. The main complications were hip and knee pain [8(30.7%) and5 (19.2%)] respectively.
Non-union (11.5%) and avascular necrosis (11.5%) was the commonest complications in young patients, and were treated by internal fixation especially if the time of surgery was delayed over 24 hours.
Conclusion: The reduction and internal fixation will continue to be used as the primary treatment of displaced intracapsular fracture in many younger patients because the benefits of preservation of the normal hip joint which should be done urgently within the first 24 hours. However, if this method of treatment is unsuccessful and requires revision, the risk of early complications is higher and hip function is poor. When hemiarthroplasty is the treatment of choice cemented fixation is preferable.
Key words: intracapsular, fracture, femoral neck


Article
Modalities of Management of Radial Nerve Injury presented with Fracture in different Sites of Humerus

Author: Hamza N. Aboud
Journal: Mustansiriya Medical Journal مجلة المستنصرية الطبية ISSN: 20701128 22274081 Year: 2010 Volume: 9 Issue: 1 Pages: 63-66
Publisher: Al-Mustansyriah University الجامعة المستنصرية

Loading...
Loading...
Abstract

Background This topic has been the subject of interest for many authors for many years, because still there is a recurrent theme …should the nerve be explored routinely along with internal fixation of fracture or should exploration be limited to those cases in which spontaneous recovery has not occurred within expected time ? or when justify? Objectives This study is designed is to shed a light on the dilemma of management radial nerve injury, in surgically treated patients versus conservatively treated others. Methods A series of 25 patients presented with any degree of radial nerve palsy complicating140 case of closed fracture shaft humerus , were treated by surgical & conservative method , according to certain indicators and evaluated during three years period, in two teaching hospital in Baghdad, from 2006 to 2008. Most of patients were males 19 case & the remaining patients were females 6 cases ,their age ranging from 3 days old baby to 45 years old & the mean age was 25 years .Ten (10) patients treated conservatively , Fifteen (15 ) patient treated surgically by either early exploration ( too early & late early ) or delayed exploration. Results The radial nerve was explore in seventeen patients from total number of study 25 patients. Eight treated by early exploration .. ( five by too early exp. within few days & three by late early exp. within next two weeks).Nine patients treated by delayed exploration after ( 3.5~ 4 ) months post traumatic period .In the last eight patients , the radial nerve was not explored & treated conservatively? The overall useful recovery rate from applying our policy was (84 % ). Conclusion Treatment of radial nerve palsy complicated closed fracture shaft humerus should be programmed well, depending on many factors , such as severity & onset of nerve lesion and type & site of associated fractures.

Keywords

Radial --- Nerve --- Fracture --- Management.


Article
INTERNAL FIXATION FOR UNSTABLE PELVIC FRACTURE: THE VALUE OF ANTERIOR APPROACH AND SMALL FRAGMENTS BIOSYNTHESIS

Author: Medhat Mohammed Mahdi
Journal: Basrah Journal of Surgery مجلة البصرة الجراحية ISSN: 16833589 / ONLINE 2409501X Year: 2011 Volume: 17 Issue: 2 Pages: 58-63
Publisher: Basrah University جامعة البصرة

Loading...
Loading...
Abstract

Fifty patients with unstable pelvic fracture were subjected to internal fixation through anterior approach by small fragment biosynthesis over sixteen year of experience. Their age, range between 15–45 years. Forty patients were males and ten patient females. Thirty patients with type B rotationally unstable fracture pelvis, 15 patients with type C vertically unstable and 5 patients with combined rotationally and vertically unstable fracture. In type B fracture, 30 patients were surgically approached anteriorly by pfennenstiel incision, while type C (15) patients required ilioinguinal extension to fix anterior and posterior ring. Combined unstable fracture in 5 patients require anterior and posterior approach as two stages surgical exposure with one week interval. It is concluded that anterior approach to displaced pelvic fracture was good and suitable for young and thin patients. In addition anterior ring fixation was the key for anatomical reduction of displaced fracture and horizontal application of small fragment implant across the sacroiliac joint and anterior ring could be achieved and maintain the stability if full weight bearing is delayed to 6 month. Other advantages and limitation of the procedure were discussed.

Keywords

UNSTABLE --- PELVIC --- FRACTURE

Listing 1 - 10 of 161 << page
of 17
>>
Sort by
Narrow your search

Resource type

article (161)


Language

English (132)

Arabic and English (15)

Arabic (5)


Year
From To Submit

2019 (8)

2018 (10)

2017 (18)

2016 (21)

2015 (19)

More...