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angle fracture

Xiaolin Wang, Qiao Yang, Yixue Cao, Haibin Hao, Junhan Zhou, Jingcheng Hao
The gelation behavior of cationic surfactants with different counterions, Br(-) , [FeCl3 Br](-) , and [CeCl3 Br](-) , in imidazolium ionic liquids (ILs) and protic ethylammonium nitrate was investigated. Small-angle X-ray scattering measurements and freeze-fracture transmission electron microscopy observations revealed the lamellar phases of metallosurfactant ionogels. The characteristics of imidazolium ILs, including the size and type, have effects on metallosurfactant ionogel properties, such as transformation temperatures, interlayer spacing, and mechanical strength...
October 26, 2016: Chemistry: a European Journal
D Maritza Contreras Gonzalez, G Spagnol, C Edvard Sverzut, A Elias Trivellato
The purpose of this study was to compare the mechanical resistance of three different plates used to treat fractures of the mandibular angle: a regular 4-hole plate, a longer 4-hole plate (both positioned using the Champy technique), and a 3-dimensional plate positioned over the oblique line. Three equal groups of replicas of human dentate mandibles made out of polyurethane resin were used (n=21 in each group). The force was applied perpendicular to the occlusal plane at a rate of 2mm/minute at three different points: the first molar on the sectioned side; the first molar on the contralateral side; and between the central incisors...
October 21, 2016: British Journal of Oral & Maxillofacial Surgery
Emmanuel João Nogueira Leal Silva, Laise Silva Villarino, Victor Talarico Leal Vieira, Thais Accorsi-Mendonça, Henrique Dos Santos Antunes, Gustavo De-Deus, Hélio Pereira Lopes
INTRODUCTION: This study evaluated the bending resistance and cyclic fatigue life of a new single-file reciprocating instrument (Unicone; Medin, Nové Město na Moravě, Czech Republic). Reciproc (VDW, Munich, Germany) and WaveOne (Dentsply Maillefer) instruments were used as references for comparison. METHODS: Flexibility was determined by 45° bending tests using a universal testing machine. The cyclic fatigue test was performed using a custom-made device. For this test, an artificial canal with a 60° angle and a 5-mm radius of curvature was used...
October 21, 2016: Journal of Endodontics
Mehmet Emin Kaval, Ismail Davut Capar, Hüseyin Ertas
INTRODUCTION: The purpose of this study was to evaluate the cyclic fatigue and torsional resistance of Hyflex EDM, ProTaper Gold (PTG), and ProTaper Universal (PTU) instruments. METHODS: For the cyclic fatigue test, 10 instruments from each group were tested by using a stainless steel block with 1.5-mm diameter and 3-mm radius of 60° angle of curvature. The instruments were allowed to rotate by using a low-torque motor, and number of cycles from the beginning to the fracture was recorded...
October 21, 2016: Journal of Endodontics
Dallas M Smuin, William L Hennrikus
BACKGROUND: The pucker sign, also called skin tenting, indicates significant displacement of the supracondylar fracture and can be a cause for alarm. The purpose of this study is to compare a cohort of patients with type III supracondylar fractures presenting with a pucker sign to a group without a pucker sign by evaluating neurovascular injury at presentation, need for open reduction, persistent neurovascular injury, range of motion, and carrying angle at final follow-up. METHODS: A retrospective review was performed for Gartland type III extension type supracondylar fractures...
October 21, 2016: Journal of Pediatric Orthopedics
Noora Tuomilehto, Reetta Kivisaari, Antti Sommarhem, Aarno Y Nietosvaara
Background and purpose - The quality of pin fixation of displaced supracondylar humerus fractures in children has not been assessed, and the clinical value of radiographic examinations after pin fixation is unclear. We evaluated pin configuration, quality of osteosynthesis, and outcome in 264 supracondylar fractures. The clinical significance of postoperative radiographs was analyzed. Patients and methods - 252 Gartland-III and 12 flexion-type supracondylar humerus fractures were pin-fixed in the periods 2002-2006 and 2012-2014...
October 24, 2016: Acta Orthopaedica
Dawei Song, Bin Meng, Guangdong Chen, Junjie Niu, Weimin Jiang, Zongping Luo, Huilin Yang
PURPOSE: To explore the efficacy of secondary balloon kyphoplasty (BKP) for new vertebral compression fracture (NVCF) of previously non-fractured, non-treated vertebrae after previous BKP and to compare the therapeutic effect between patients with single-level adjacent NVCF and remote NVCF. METHODS: We retrospectively studied patients with single-level NVCF after initial BKP in our hospital from January 2007 to August 2014. The mean follow-up time from secondary BKP was 13...
October 21, 2016: European Spine Journal
Cenk Özkan, Mehmet Ali Deveci, Mustafa Tekin, Ömer Sunkar Biçer, Kadir Gökçe, Mahir Gülşen
OBJECTIVE: The present study assessed functional and radiographic outcomes of distraction osteogenesis treatment of post-traumatic elbow deformities in children. METHODS: Eight children were treated between 2008 and 2013 for post-traumatic elbow deformities using distraction osteogenesis. Mean age at time of operation was 10.9 years. Six patients had varus and 2 had valgus deformity. Magnitude of correction, fixator index, complications, carrying angle, and elbow range of motion were assessed...
October 17, 2016: Acta Orthopaedica et Traumatologica Turcica
Sami Dogan, Ariel J Raigrodski, Hai Zhang, Lloyd A Mancl
STATEMENT OF PROBLEM: Studies evaluating anterior zirconia-based crowns are limited. PURPOSE: The purpose of this prospective cohort clinical study was to assess the efficacy of zirconia-based anterior maxillary crowns with 0.3-mm customized copings at the cervical third and anatomical design elsewhere for up to 5 years of service. MATERIAL AND METHODS: Eighteen participants who required an anterior maxillary crown (n=20) and who had signed a consent form approved by the University of Washington Health Sciences Center Human Subjects Division were enrolled...
October 17, 2016: Journal of Prosthetic Dentistry
Mohammad Waheed El-Anwar, Hazem Saeed Amer, Ayman F Ahmed
OBJECTIVES: The objectives of this study were to study and investigate the relation between the state of the lower last molar teeth eruption and the site of the mandibular fractures. METHODS: Adult patients with traumatic mandibular fractures were included in this study. Panorama and computed tomography was performed for all patients. The relation between the state of the lower last molar eruption and criteria of the fracture was analyzed. RESULTS: In 106 patients who had 168 mandibular fractures, impacted lower third molar teeth were found to significantly increase the incidence of mandibular angle fracture while they had nonsignificant effect on incidence of other sites of mandibular fractures...
October 2016: Journal of Craniofacial Surgery
Arunesh Tiwari, Jeevan Lata, Madan Mishra
AIMS: This study was set out to evaluate the relationship between the presence and absence of unerupted mandibular third molar and fracture of mandibular angle/condyle, and to analyse if prophylactic removal of symptom-free unerupted mandibular third molar is beneficial. METHODS: Hundred patients of mandible fracture were selected randomly irrespective of age, sex, caste, creed and socio-economic status. Data were collected from the patients on the basis of history, clinical examination and radiographs for the following information: age, sex, aetiology of fracture, presence and status of the mandibular third molar and location of mandible fracture...
September 2016: Journal of Oral Biology and Craniofacial Research
Xiang-Yao Sun, Xi-Nuo Zhang, Yong Hai
PURPOSE: This study evaluated differences in outcome variables between percutaneous, traditional, and paraspinal posterior open approaches for traumatic thoracolumbar fractures without neurologic deficit. METHODS: A systematic review of PubMed, Cochrane, and Embase was performed. In this meta-analysis, we conducted online searches of PubMed, Cochrane, Embase using the search terms "thoracolumbar fractures", "lumbar fractures", ''percutaneous'', "minimally invasive", ''open", "traditional", "posterior", "conventional", "pedicle screw", "sextant", and "clinical trial"...
October 18, 2016: European Spine Journal
Hiroaki Kimura, Shunsuke Fujibayashi, Bungo Otsuki, Mitsuru Takemoto, Jitsuhiko Shikata, Seiichi Odate, Mutsumi Matsushita, Akira Kusuba, Youngwoo Kim, Takeshi Sakamoto, Kei Watanabe, Masato Ota, Masanori Izeki, Naoya Tsubouchi, Shuichi Matsuda
STUDY DESIGN: A multicenter, retrospective study. OBJECTIVE: To identify the factors that affect surgery-related complications and to clarify the surgical strategy for treating lumbar disorders in Parkinson disease (PD). SUMMARY OF BACKGROUND DATA: Previous studies have reported a high complication rate for spinal surgery in patients with PD. Because of the limited number of studies, there are no guidelines for spinal surgery for PD patients...
October 6, 2016: Clinical Spine Surgery
Charles E Anyanechi, Otasowie D Osunde, Birch D Saheeb
OBJECTIVE: To analyze cases of compound, unfavorable and non-comminuted mandibular angle fractures treated by trans-osseous wiring, presenting postoperative complications, in a low resource center. MATERIALS AND METHODS: This was a 13-year retrospective study of 1,324 fractures in 1,317 subjects. The predictor variables were age, gender, aetiology, time lag between injury and treatment, and concomitant mandibular and mid-facial fractures. The outcome variable was the development of complication(s) after treatment...
September 2016: Ghana Medical Journal
Qinliang Li, Cai Yun, Shichun Li
BACKGROUND: Complications in posterior pedicle screw fixation using a conventional posterior approach for thoracolumbar fractures include vertebral height loss, kyphosis relapse and breakage, or loosening of instrumentation. The purpose of this study was to evaluate the clinical effects of transpedicular bone grafting and pedicle screw fixation in injured vertebrae using a paraspinal approach for thoracolumbar fractures. METHODS: We retrospectively analyzed 50 patients with thoracolumbar fractures treated with transpedicular bone grafting and pedicle screw fixation in injured vertebrae using a paraspinal approach...
October 17, 2016: Journal of Orthopaedic Surgery and Research
Paulo Domingos Ribeiro-Junior, Ricardo Alexandre Galdioli Senko, Gabriel Cury Batista Mendes, Fernando Gianzanti Peres
Facial nerve has great functional and aesthetic importance to the face, and damage to its structure can lead to major complications. This article reports a clinical case of neuroanastomosis of the facial nerve after facial trauma, describing surgical procedure and postoperative follow-up. A trauma patient with extensive injury cut in right mandibular body causing neurotmesis of the VIIth cranial nerve and mandibular angle fracture right side was treated. During surgical exploration, the nerve segments were identified and a neuroanastomosis was performed using nylon 10-0, after reduction and internal fixation of the mandibular fracture...
October 2016: Journal of Craniofacial Surgery
Wenhao Hu, Bin Wang, Hongyu Run, Xuesong Zhang, Yan Wang
BACKGROUND: It is estimated that upwards of 50,000 individuals suffer traumatic fracture of the spine each year, and the instability of the fractured vertebra and/or the local deformity results in pain and, if kyphosis increases, neurological impairment can occur. There is a significant controversy over the ideal management. The purpose of the study is to present clinical and radiographic results of pedicle subtraction osteotomy and disc resection with cage placement in correcting post-traumatic thoracolumbar kyphosis...
October 12, 2016: Journal of Orthopaedic Surgery and Research
M Chmielnicki, A Prokop
Tibial shaft fractures are among the most common long bone fractures in humans. The incidence is 1-2 per 100,000. The gold standard of treatment for AO type 42 A-C fractures is a locking intramedullary nail. The development of new implants has extended the indications for this minimally invasive technique, so that now AO types 41 and 43 can also be treated with special nails. Fixed-angle screw anchors increase primary stability and supplemental locking devices located proximally and distally extend the spectrum of use to metaphyseal fractures...
October 2016: Zeitschrift Für Orthopädie und Unfallchirurgie
Bauke W Kooistra, W Jaap Willems, Eelke Lemmens, Bas P Hartel, Michel P J van den Bekerom, Derek F P van Deurzen
BACKGROUND: Compared with total shoulder arthroplasty (TSA), total shoulder surface replacement (TSSR) may offer the advantage of preservation of bone stock and shorter surgical time, possibly at the expense of glenoid component positioning and increasing lateral glenohumeral offset. We hypothesized that in patients treated for osteoarthritis with a sufficient rotator cuff, TSA and TSSR patients have comparable functional outcome, glenoid component version, and lateral glenohumeral offset...
October 7, 2016: Journal of Shoulder and Elbow Surgery
Wendy B Katzman, Neeta Parimi, Ziba Mansoori, Lorenzo Nardo, Deborah M Kado, Peggy M Cawthon, Lynn M Marshall, John T Schousboe, Nancy E Lane
OBJECTIVE: Investigate cross-sectional and longitudinal associations of Diffuse Idiopathic Skeletal Hyperostosis (DISH) and thoracic kyphosis in older persons. METHODS: DISH and kyphosis were assessed in 1500 men from the Osteoporosis in Men (MrOS) study and 1267 women from the Study of Osteoporotic Fractures (SOF). DISH was assessed in baseline lateral spine radiographs, and Cobb angle of kyphosis was measured from baseline and follow-up radiographs, mean 4.6 years later in men, and 3...
October 9, 2016: Arthritis Care & Research
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