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Search Results: 1 - 10 of 407 matches for " Torsion "
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Spin, the Classical Theory  [PDF]
Richard T. Hammond
Journal of Modern Physics (JMP) , 2012, DOI: 10.4236/jmp.2012.31001
Abstract: With the development of local gauge theories of gravitation, it became evident that intrinsic spin was an integral part of the theory. This gave spin a classical formulation that predicted the existence of a new kind of field, the torsion field. To date only one class of experiments has been developed to detect this field, a search for a long range dipole force. In this article, the torsion equations are de-coupled from the curved space of general relativity derived from basic principles using vector calculus and the theory of electromagnetism as a guide. The results are written in vector form so that they are readily available to experimentalists, paving the way for new kinds of experiments.
Natural course of ovarian torsion after untwisting: A case report with radiographic imaging  [PDF]
Dmitry Fridman, Muhammad Faisal Aslam, Neekianund Khulpateea
Open Journal of Obstetrics and Gynecology (OJOG) , 2012, DOI: 10.4236/ojog.2012.21007
Abstract: Background: Radiographic studies largely contribute to prompt diagnosis of ovarian torsion, though post-operative changes are not described and might contribute to unnecessary intervention. Case: We report a case of ovarian torsion diagnosed based on clinical presentation and radiographic findings. The detorsion was successfully performed through laparosopic access. Subsequently patient presented for elective ultrasonography and MRI which diagnosed multicystic ovarian mass, attributed to hematoma which resolved spontaneously with no intervention in 3 weeks. Conclusion: Ovarian changes after detorsion consistent with development of hematoma may be benign and resolve spontaneously.
Clinical Findings of Patients Undergone Surgery for Testicular Torsion: A 12-Year Single Center Experience in Northern Iran  [PDF]
Hamid Shafi, Amin Zarghami, Arsalan Aliramaji, Maryam Rahimi
Open Journal of Urology (OJU) , 2014, DOI: 10.4236/oju.2014.45011

Introduction: Testicular torsion is a surgical emergency which requires early diagnosis and prompt surgical management to avoid testicular damage. The aim of this study is to survey the clinical findings and outcome of the patients treated for testicular torsion in a university hospital in Babol, northern Iran. Methods: In this cross sectional study, a retrospective survey of all cases presenting with acute scrotum and primarily diagnosed as testicular torsion was conducted during 2001 and 2012 in Babol, northern Iran. All 103 cases were reviewed and several clinical data, including duration of symptoms and operative findings were collected. Findings: Of 103 patients who presented to the emergency department with acute scrotum, the median age of the cases was 16.0 years. Thirty four percent of the patients presented emergency unit less than 6 hours from symptom exposure. Pain (95.1%) was the major symptom in all patients. Surgery revealed that 72 (70.9%) cases were diagnosed firmly as testicular torsion that 23 patients underwent orchidectomy for a necrotic torsed testis. There were significant differences between orchiectomized versus non-orchiectomized torsion cases in affected side, symptom presentation to operation time. Conclusion: According to our results more than half of the cases presented more than in the golden time. Late presentation to hospital was the major cause of delay leading to orchidectomy in patients with testicular torsion. Greater effort in health education and direct or selfreferal to hospital may reduce this delay.

Atypical presentation and localization of granulosa cell tumor—A case report and review of the literature  [PDF]
Evangelos Grigoriou Sakkas, Dario Bucella, Alexandre Roland De Wind, Claudia Stanciu, Frederic Buxant
Open Journal of Obstetrics and Gynecology (OJOG) , 2012, DOI: 10.4236/ojog.2012.22031
Abstract: Introduction: Extraovarian granulosa cell tumor (GCT) is a very uncommon tumor, assumed to arise from the ectopic gonadal tissue along the embryonal route of the genital ridge. Case report: We report the case of a 25 year-old woman who was presented at the emergency unit with a severe abdominal pain focused on the left iliac fossa. The patient had delivered normally 2 months before. An ovarian mass of 79 × 67 × 89 mm was shown in vaginal ultrasound as well as at the abdominal scan. Exploratory laparoscopy was performed and a torsion of the fallopian tube and an hemato-salpinges was visualized. Re-vascularisation was not achieved and a left salpingectomy took place. The immuno-histopathology report revealed an extra-ovarian GCT deriving from the fimbriae of the tube. Follow-up surgery was discussed. The case is presented for its rarity.
An Unusual Presentation of Pelvic Pain: Torsion of Ovarian Endometroid Adenocarcinoma
Turkish Journal of Emergency Medicine , 2009,
Abstract: Letter to the Edit r
Irfan Akhtar
The Professional Medical Journal , 1995,
Abstract: A retrospective study of thirty two patients presenting to Emergency department of Rawalpindi General Hospitalwith acute scrotal pain, all being subjected to surgery. Seventeen (54%) were found to have gangrenous testiswith mean time of presentation 9 hours. Nine (28%) patients could be salvaged with bilateral fixation. Seven(22%) were found to have torsion of appendix testis with mean time of presentation being 18 hours. Torsionin undescended testis was encountered in seven (22%) patients. Six(19%) patients had negative explorationsand all were above 25 years of age.
Primary Torsion of the Omentum in Children
Anita Dhar, M. luthra
JK Science : Journal of Medical Education & Research , 2000,
Abstract: Torsion of the omentum is an uncommon cause of abdominal pain in children. The patient usuallypresents with a clin ical picture simulating acute append icitis. We report on two children with primaryomental torsion. who were managed by partial omentectomy with a satisfactory outcome in eachcase.
The Torsional Eccentricity of the Structures in Miscellaneous Design Codes
Mihaela Anechitei,Doina ?tefan,Ioana Olteanu
Bulletin of the Polytechnic Institute of Jassy, Constructions, Architechture Section , 2010,
Abstract: Structures rarely achieve structural symmetry. Even in symmetric structures, the asymmetric position of the structural components tends to produce an effective asymmetric structure. Such an asymmetry even if is small, can produce a torsional response coupled with translational response. In the torsional analysis, the provisions of the seismic norms are based on determining the static eccentricity. In this paper is presented a general way of computing the eccentricity in torsional design. The purpose of this article is to make a comparison of the general rules used to determine the eccentricity and their values. Are taken into account the norms from: Romania, Europe, Japan, Germany and the United States of America.
Maternal dystocia in cows and buffaloes: A Review  [PDF]
Govind Narayan Purohit, Yogesh Barolia, Chandra Shekhar, Pramod Kumar
Open Journal of Animal Sciences (OJAS) , 2011, DOI: 10.4236/ojas.2011.12006
Abstract: The maternal causes of dystocia in cattle and buffaloes are analyzed. Uterine torsion appears to be the most frequent maternal cause of dys-tocia in buffaloes whereas improper cervical dilation appears to be more frequent maternal cause of dystocia in cattle. Failure of uterine expulsive forces (Uterine Inertia) and neo-plasm’s of vagina, vulva and uterus are com-monly seen in cows and buffaloes. The various maternal causes of dystocia in cattle and buf-faloes and their management are described.
Validity of Ultrasound in Patients with Acute Pelvic Pain Related to Suspected Ovarian Torsion  [PDF]
Leena Mawaldi, Charu Gupta, Hanadi Bakhsh, Maissa Saadeh, Mostafa A. Abolfotouh
Surgical Science (SS) , 2011, DOI: 10.4236/ss.2011.26069
Abstract: Objective: Ultrasound has been proven to be useful in detecting underlying ovarian pathology. However, its role in the prediction of ovarian torsion has been controversial. The aim of the study was to assess the validity of ultrasound in the prediction of ovarian torsion in patients with acute pelvic pain related to clinically suspected ovarian torsion. Methods: A retrospective observational study was conducted at the Ob/Gyn department using a 10-year chart review of all female patients older than 11 years of age with highly suspected ovarian torsion who underwent clinical assessment and ultrasound prior to surgery (n = 62). The sensitivity and specificity of ultrasound were determined by cross-tabulation of the ultrasound and surgical findings. Results: Of the suspected cases, 54 (87.1%) were confirmed to be cases of ovarian torsion by surgery. The majority of the cases were suggestive of ovarian torsion, which was indicated by clinical examination (77.4%), ultrasound (77.4%), or pathological examination (79%). Almost one-half of the cases (46.8%) showed a pain score >6; two-thirds (62.9%) presented with vomiting and/or nausea; and more than one-third (38.7%) presented with leukocytosis. The estimated sensitivity and specificity of ultrasound were 0.74 and 0.0, respectively. The positive predictive value was 0.83. Ultrasound was significantly associated with both clinical examination (p = 0.039) and pain score (p = 0.008). Conclusion: The diagnosis of ovarian torsion cannot be exclusively based on ultrasound. Both clinical and sonographical evaluation of acute pelvic pain should be considered for the diagnosis. A definitive diagnosis remains challenging.
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