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https://www.readbyqxmd.com/read/29658534/the-influence-of-osteoporotic-bone-structures-of-the-pelvic-hip-complex-on-stress-distribution-under-impact-load
#1
Katarzyna Arkusz, Tomasz Klekiel, Niezgoda Niezgoda, Romuald Będziński
PURPOSE: The aim of this study was to determine the effect of bone mineral density (BMD) on the stress distribution in pelvic-hip complex (PHC) model which included bone structures and soft tissues. Bone mass changes in osteoporosis and osteopenia were considered in this analysis. In addition, the relations between force direction and stress distribution causing PHC fractures were determined. METHODS: This paper presents the development and validation of a detailed 3D finite element model with high anatomical fidelity of the PHC and BMD changes in trabecular and cortical bones, modelled based on CT scans...
2018: Acta of Bioengineering and Biomechanics
https://www.readbyqxmd.com/read/29602669/displaced-anterior-pelvic-fracture-on-initial-pelvic-radiography-predicts-massive-hemorrhage
#2
Shinsuke Tanizaki, Shigenobu Maeda, Makoto Sera, Hideya Nagai, Taizo Nakanishi, Minoru Hayashi, Hiroyuki Azuma, Ken-Ichi Kano, Hiroki Watanabe, Hiroshi Ishida
INTRODUCTION: Massive hemorrhage is often associated with unstable pelvic fractures with posterior ring injury. Initial pelvic radiography alone may not detect these posterior lesions. We examined whether the presence of an anterior pelvic fracture on initial pelvic radiography alone may identify patients who are at a high risk of major hemorrhage. MATERIALS AND METHODS: A total of 288 patients with pelvic fractures were admitted to the Fukui Prefectural Hospital during an 11-year period...
March 21, 2018: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29526035/trends-and-characteristics-of-maxillofacial-fractures-sustained-during-sports-activities-in-japan
#3
Kazuhiko Yamamoto, Yumiko Matsusue, Satoshi Horita, Kazuhiro Murakami, Tsutomu Sugiura, Tadaaki Kirita
BACKGROUND/AIM: Sports activity increases the risk of maxillofacial fractures. The aim of this study was to analyze trends and characteristics of maxillofacial fractures sustained during sports activity to develop more effective treatments and possibly to prevent injury. MATERIALS AND METHODS: Data of 248 patients with maxillofacial fractures sustained during sports activity were retrospectively analyzed based on their clinical records and radiographs. RESULTS: The patients were 226 males (91...
March 11, 2018: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/29481499/respiratory-obstruction-due-to-richards-type-4-fracture
#4
Willian Ricardo Pires, Gabriel Mulinari Santos, Erik Neiva Ribeiro de Carvalho Reis, André Hergesel de Oliva, Ricardo Garcia Mureb Jacob, Leonardo Perez Faverani, Francisley Ávila Souza, Idelmo Rangel Garcia Júnior
Facial fractures can be potentially fatal in polytraumatized patients due to retropositioning tissues to upper airway obstruction. In the first aids, this situation can be reversed using a tracheostomy procedure to break out the airways. However, fractures leading to airway obstruction are rare and according to Richards Classification can be classified into 5 types. The purpose of this article is to report a clinical patient with a bilateral condylar and mandibular symphysis fractures that resulted in airway obstruction and severe mandibular rear projection...
February 23, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29456395/incidence-and-pattern-of-mandible-fractures-in-the-madinah-region-a-retrospective-study
#5
Mahmood Samman, Syed Waheed Ahmed, Hassan Beshir, Turki Almohammadi, Santosh R Patil
Objectives: The objective of the study is to study the incidence and pattern of mandible fractures in the holy city of Madinah in the Kingdom of Saudi Arabia over a retrospective period of 3 years from 2013 (1434H) to 2016 (1436H) and to compare the results with those from other regions of Saudi Arabia and elsewhere. Materials and Methods: Relevant data of patients admitted to the King Fahad Hospital, Madinah with a fracture of the mandible during the study were collected from their medical records and radiographs...
January 2018: Journal of Natural Science, Biology, and Medicine
https://www.readbyqxmd.com/read/29424159/-minimally-invasive-internal-fixation-of-pelvic-ring-for-type-c-pelvic-fracture
#6
Chun-Hui Tang, Gao-Wen Yao, Lin Wang, Hong-Liang Tu, Wei Luo
OBJECTIVE: To evaluate the feasibility of minimally invasive internal fixation of pelvic anterior and posterior ring for the treatment of type C pelvic fracture, and to explore its operative techniques and therapeutic efficacy. METHODS: From December 2010 to December 2015, 18 patients with type C pelvic fracture were treated by reconstructive plates fixation through minimally invasive ilioinguinal approach for pelvic anterior ring injuries, and by invasive percutaneous sacroiliac joint screw fixation for pelvic posterior ring injuries...
July 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29390511/mandibular-fracture-patterns-at-a-medical-center-in-central-taiwan-a-3-year-epidemiological-review
#7
Fu-Yu Lin, Chao-I Wu, Hsu-Tang Cheng
Mandibular fractures constitute a major portion of maxillofacial trauma and may lead to considerable functional and aesthetic sequelae if treatment is inadequate or delayed. An epidemiology study on mandibular fractures may guide the preventive efforts of the Taiwan public health care system. Therefore, a retrospective review was conducted at a medical center in central Taiwan to evaluate the current mandibular fracture epidemiology.The medical records and digitized radiographs of 198 patients who received treatment for mandibular fractures during a 3-year period (from October 2010 to September 2013) at a medical center in central Taiwan were reviewed to obtain demographic and injury data...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29386813/a-clinical-prospective-randomized-comparative-study-on-ostyeosynthesis-of-mandibular-anterior-fractures-following-open-reduction-using-lag-screws-and-miniplates
#8
Gaurav Mittal, Anmol Aggrawal, Ritesh Garg, Siddharth Sharma, Abhishek Rathi, Vishnu Sharma
Introduction: The aim of the present study was to compare fixation of mandibular anterior fractures following open reduction using lag screws or miniplates. Materials and Methods: This prospective study was conducted on 20 patients diagnosed with cases of displaced mandibular anterior fractures treated with open reduction and internal fixation. The patients were then randomly allocated to either of two groups - Group A: two 2.5 mm stainless steel lag screws were placed in 10 patients...
July 2017: National Journal of Maxillofacial Surgery
https://www.readbyqxmd.com/read/29247322/a-biomechanical-study-of-sacroiliac-rod-fixation-for-unstable-pelvic-ring-injuries-verification-of-the-within-ring-concept
#9
Kentaro Futamura, Tomonori Baba, Atsuhiko Mogami, Itaru Morohashi, Osamu Obayashi, Hideaki Iwase, Kazuo Kaneko
PURPOSE: The aim of this study was to compare the fixation power of sacroiliac rod fixation (SIRF), which was developed based on our original "within ring" concept to exclude the lumbar vertebra from the fixation range, and spinopelvic fixation (SPF) in a biomechanical experiment. METHODS: SPF and SIRF were applied to the posterior element in four bones each with the pelvic ring fracture model (AO/OTA classification 61-C1.3). A 300-N axial force was loaded on the fifth lumbar vertebra of the simulated pelvis...
December 15, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/29130656/-design-of-minimal-invasive-screw-on-posterior-pelvis-ring-and-pelvic-finite-element-analysis
#10
Fan Tang, Li Min, Yan-Ling Wang, Bo Qu, Yong Zhou, Yi Luo, Wen-Li Zhang, Rui Shi, Hong Duan, Chong-Qi Tu
OBJECTIVE: To design minimal invasive screw on posterior pelvic ring and perform threedimensional finite element analysis based on a pelvis finite element model. METHODS: We measured the pelvic anatomical data of 20 healthy volunteers and identified potential designs for minimal invasive screw on posterior pelvic ring. A finite element model of pelvis was then established. Threedimensional finite element analyses were performed under static and dynamic mechanical loading,respectively...
September 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/29099374/traumatic-bone-cyst-of-an-anterior-mandible-with-previous-symphyseal-fracture-in-a-pediatric-patient-a-rare-finding-and-etiopathologic-correlation
#11
Kumar Nilesh, Aaditee V Vande, Shivsagar Tewary, K V Suresh
Traumatic bone cysts (TBCs) are uncommon intraosseous lesions, classified as pseudocysts because they lack an epithelial membrane lining. The etiology of a pseudocyst has not been determined. Various hypotheses have been put forward to explain its pathogenesis, of which the traumatic-hemorrhagic theory is the most commonly accepted. Minor trauma, insufficient to cause fracture or iatrogenic injury, is commonly implicated as the stimulus initiating cyst formation. A TBC presenting after jaw fracture has been rarely reported in the literature...
November 2017: General Dentistry
https://www.readbyqxmd.com/read/28971089/posterior-sacroiliac-osteotomy-an-alternative-to-the-ilioinguinal-approach-for-pelvic-reconstruction-in-misalignment-lesions
#12
João Antonio Matheus Guimarães, Vinícius Magno da Rocha, André Luiz Loyelo Barcellos
Pelvic ring fractures occur in association with potentially fatal lesions, whose treatment is a priority in the polytrauma setting. As consequence, the definitive orthopedic approach may be postponed, leading patients to chronic and potentially disabling deformities. The treatment of these deformities is a challenge, requiring highly complex and staged surgical reconstructions. The ilioinguinal approach has been widely used in these surgeries, because it allows the release and mobilization of the hemipelvis and, in some cases, anterior fixation of the sacroiliac joint...
2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28941376/is-the-three-dimensional-strut-plate-an-adequate-fixation-technique-for-mandibular-symphysis-fractures
#13
Andrew T Meram, Sergio Olate, Celso F Palmieri
PURPOSE: We present a series of cases of mandibular symphysis fractures treated at our institution with a 3-dimensional strut plate. The aim of the present study was to confirm the stability of this fixation technique and discuss its advantages, disadvantages, and potential complications. PATIENTS AND METHODS: We designed and implemented a retrospective cohort study of patients who underwent surgery by the same surgeon at our institution from July 2012 to April 2014 for a mandible fracture with a symphysis component...
January 2018: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28878532/bladder-incarceration-following-anterior-pelvic-infix-of-a-traumatic-pubic-symphysis-diastasis-treated-with-immediate-open-reduction-and-internal-fixation
#14
Mantu Jain, Saurav Narayan Nanda, Soumya Shrikanta Mohapatra, Barada Prasanna Samal
Stabilization after a pelvic fracture can be accomplished using multiple techniques. The anterior external fixator has been traditionally used in variety of unstable pelvis either singly or in combination of posterior screws. These devices are cumbersome and restrict side turning and sitting particularly in obese patients. An alternative, anterior subcutaneous pelvic internal fixation technique (ASPIF) was developed which is well tolerated by patients for mobility and comfort and biomechanically more stable construct Complications of this construct included irritation of the lateral femoral cutaneous nerve, femoral nerve palsy &heterotypic ossification with reduced rates of infections and aseptic loosening as compared to external fixator...
August 2017: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/28839478/epidemiology-of-surgically-managed-mandibular-condylar-fractures-at-a-tertiary-referral-hospital-in-urban-southwest-china
#15
Swosti Thapa, Jun Wang, Hong-Tao Hu, Fu-Gui Zhang, Ping Ji
BACKGROUND: Mandibular condylar fracture is one of the commonest maxillofacial fractures treated by maxillofacial surgeons. Demography of the patients, causation, and characteristics of the fracture depends on various socio-economic factors. Hence, maxillofacial surgeons should be familiar with epidemiology of mandibular condylar fracture. OBJECTIVE: This study retrospectively describes the demography, etiology, fracture characteristics, and hospital utilization of surgically treated mandibular condylar fractures in a tertiary referral hospital in urban China in past five years...
2017: Open Dentistry Journal
https://www.readbyqxmd.com/read/28737727/patterns-associated-with-adult-mandibular-fractures-in-southern-taiwan-a-cross-sectional-retrospective-study
#16
Ko-Chien Lin, Shu-Hui Peng, Pao-Jen Kuo, Yi-Chun Chen, Cheng-Shyuan Rau, Ching-Hua Hsieh
Purpose: This study aimed to determine the patterns associated with adult mandibular fractures from a Level-I trauma center in southern Taiwan. Methods: The data of adult trauma patients admitted between 1 January 2009 and 31 December 2014 were retrieved from the Trauma Registry System and retrospectively reviewed. Fracture site and cause of injury were categorized into groups for comparison, and corresponding odds ratios (ORs) and 95% confidence intervals (CIs) were obtained by multivariate logistic regression...
July 24, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28732217/finite-element-evaluation-of-stable-fixation-in-combined-mandibular-fractures
#17
Thalita Regina Vieira E Oliveira, Daniel Takanori Kemmoku, Jorge Vicente Lopes da Silva, Pedro Yoshito Noritomi, Luis Augusto Passeri
PURPOSE: The fixation of combined mandibular fractures, especially symphyseal-condylar fractures, although occurring commonly and having a higher complication rate in the clinic, is rarely investigated regarding predictable therapeutic approaches. Thus this study's aim was to assess different forms of condylar fixation when combined with symphyseal fracture fixation. MATERIALS AND METHODS: Using finite element models, we analyzed the stress distribution that occurs when a condylar fracture is fixed with 1 miniplate, 2 miniplates, or a trapezoidal condylar miniplate and when a symphyseal fracture is fixed with 2 parallel plates, 2 perpendicular plates, or 2 lag screws...
November 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28717284/is-the-mandibular-growth-affected-by-internal-rigid-fixation-a-systematic-review
#18
REVIEW
Humberto Fernández-Olarte, Andrés Gómez-Delgado, Dayan López-Dávila, Rodolfo Rangel-Perdomo, Gloria Inés Lafaurie, Leandro Chambrone
PURPOSE: The purpose of this systematic review was to evaluate, in animal model-based studies, whether there are mandibular growth alterations, after open reduction and internal rigid fixation with titanium plates and screws. METHODS: A literature search was conducted using the MEDLINE, EMBASE, and LILACS databases, up to and including August 2015. Surgical reduction and internal rigid fixation (IRF) of induced fractures were compared to non-invasive procedures, in order to investigate if there were alterations in the mandibular growth patterns...
September 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28689459/biomechanical-comparison-of-supraacetabular-external-fixation-and-anterior-pelvic-bridge-plating
#19
Ali Turgay Çavuşoğlu, Fatma Kübra Erbay, Mehmet Hakan Özsoy, Teyfik Demir
Unstable pelvic ring injuries are complex and risky injuries due to high morbidity and mortality. Although anterior pelvic external fixator is a suitable method for rapid stabilization of an injured pelvic ring, due to some disadvantages such as high complication rate, nerve damage, and difficulties of patient's mobility and comfort, there has recently been increased searching for alternative methods for stabilization of the pelvic ring. Pubic symphysis zone freely moves in pelvic models. This study aims to evaluate the biomechanical stability of anterior pelvic bridge plating and compare it with supraacetabular external fixators in an untreated unstable pelvic fracture model...
July 1, 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28611968/outcome-of-internal-fixation-and-corticocancellous-grafting-of-symphysis-pubis-diastasis-which-developed-after-malunion-of-pubic-rami-fracture
#20
Hasan Bombaci
We report a case of pubic symphysis diastasis, which was initially asymptomatic; however, it became symptomatic with urinary incontinence during pregnancy. The patient was treated with open reduction and internal fixation of the symphysis pubis. A corticocancellous autograft was used for filling the gap which remained despite bilateral compression of the iliac bones. We obtained satisfactory outcome in terms of symptoms at the 3 years' follow-up; however, there was instability findings in the X-rays with broken screws...
June 2017: Hip & Pelvis
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