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https://www.readbyqxmd.com/read/29785407/unusual-occurrence-of-orbital-hemangiopericytoma-in-the-zygomatic-bone-of-an-adolescent-a-case-report
#1
Bahram Eshraghi, Hadi Ghadimi, Zohreh Nozarian
Background: Hemangiopericytoma and solitary fibrous tumor are considered related variants on the same spectrum and both may essentially be the same tumor. They are infrequently encountered in the orbital region while the zygomatic bone is an extremely rare location for these neoplasms to occur. Case presentation: A 14-year-old boy presented with complaint of deformity of left infraorbital area and a firm, regular mass in the region. Orbital CT scan revealed a well-defined round isodense intraosseous lesion in the lowermost portion of the lateral orbital wall (zygomatic bone), expanding the bone and protruding anteriorly and medially...
2018: Eye and Vision (London, England)
https://www.readbyqxmd.com/read/29784006/secure-corridor-for-infraacetabular-screws-in-acetabular-fracture-fixation-a-3-d-radiomorphometric-analysis-of-124-pelvic-ct-datasets
#2
Stephan Arlt, Hansrudi Noser, Andreas Wienke, Florian Radetzki, Gunther Olaf Hofmann, Thomas Mendel
BACKGROUND: Acetabular fracture surgery is directed toward anatomical reduction and stable fixation to allow for the early functional rehabilitation of an injured hip joint. Recent biomechanical investigations have shown the superiority of using an additional screw in the infraacetabular (IA) region, thereby transfixing the separated columns to strengthen the construct by closing the periacetabular fixation frame. However, the inter-individual existence and variance concerning secure IA screw corridors are poorly understood...
May 21, 2018: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29762185/intraosseous-heat-generation-during-osteotomy-performed-freehand-and-through-template-with-an-integrated-metal-guide-sleeve-an-in-vitro-study
#3
Ibrahim Barrak, Árpád Joób-Fancsaly, Gábor Braunitzer, Endre Varga, Kristóf Boa, József Piffkó
OBJECTIVE: To investigate drill wear and consequent intraosseous temperature elevation during freehand and guided bone drilling, with attention to the effect of metal-on-metal contact during guided drilling. MATERIALS AND METHODS: Osteotomies were performed on bovine ribs, with 2.0 mm diameter stainless steel drill bits of the SMART Guide System, under 3 sterilization protocols, at 800, 1200, 1500, and 2000 rpm. Sterilization was performed after every 3 drilling...
May 14, 2018: Implant Dentistry
https://www.readbyqxmd.com/read/29762056/fracture-of-ankle-mri-using-opposed-phase-imaging-obtained-from-turbo-spin-echo-modified-dixon-image-shows-improved-sensitivity
#4
Jin Hee You, In Hwan Kim, Jinwoo Hwang, Hye Sun Lee, Eun Hae Park
OBJECTIVE: To evaluate if opposed-phase (OP) imaging obtained from the turbo spin echo (TSE) modified Dixon (mDixon) technique can increase the sensitivity of magnetic resonance imaging (MRI) for diagnosing ankle fractures. METHODS: This study included 95 CT-confirmed ankle fractures with additional MRI of the ankle using a TSE modified Dixon technique. Two groups of images were analyzed independently: Group 1 - imaging group without OP imaging; Group 2 - imaging group with OP imaging...
May 15, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29760731/recovery-of-donor-hematopoiesis-after-graft-failure-and-second-hematopoietic-stem-cell-transplantation-with-intraosseous-administration-of-mesenchymal-stromal-cells
#5
Nataliya Petinati, Nina Drize, Natalia Sats, Natalya Risinskaya, Andrey Sudarikov, Michail Drokov, Daria Dubniak, Alina Kraizman, Maria Nareyko, Natalia Popova, Maya Firsova, Larisa Kuzmina, Elena Parovichnikova, Valeriy Savchenko
Multipotent mesenchymal stromal cells (MSCs) participate in the formation of bone marrow niches for hematopoietic stem cells. Donor MSCs can serve as a source of recovery for niches in patients with graft failure (GF) after allogeneic bone marrow (BM) transplantation. Since only few MSCs reach the BM after intravenous injection, MSCs were implanted into the iliac spine. For 8 patients with GF after allo-BMT, another hematopoietic stem cell transplantation with simultaneous implantation of MSCs from their respective donors into cancellous bone was performed...
2018: Stem Cells International
https://www.readbyqxmd.com/read/29754186/flexor-hallucis-longus-transfer-clinical-outcome-through-a-single-incision-for-chronic-achilles-tendon-rupture
#6
Hossam Abubeih, Mohamed Khaled, Waleed Riad Saleh, Galal Z Said
PURPOSE: The aim of this study is to evaluate the clinical outcome of single-incision flexor hallucis longus tendon transfer in chronic Achilles tendon rupture. METHODS: A prospective study of a series of cases of chronic Achilles tendon rupture that were treated with single-incision flexor hallucis longus tendon transfer, from April 2015 to December 2016. The study included 21 patients (15 men and 6 women), with mean age 40.3 ± 17.5 years. The average follow-up time was 15 (12-24) months...
May 12, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29749993/central-acinic-cell-carcinoma-of-the-mandible-simulating-as-benign-odontogenic-lesion-a-case-report
#7
Manas Bajpai, Nilesh Pardhe, Betina Chandolia, Manika Arora
Centrally occurring salivary gland tumors are rare. Because of a considerable overlap between the clinical and histopathological features, this group of tumors often produces a diagnostic difficulty to the clinicians and oral pathologists. Acinic cell carcinoma (ACC) is an unusual, low-grade, malignant salivary gland tumor that represents approximately 2% of the salivary gland tumors with almost 90% arising in the parotid gland. The rest involve the submandibular and the minor salivary gland. ACC of the jaw is extremely rare and, to our knowledge, only 8 cases have been reported in the English literature...
March 2018: Iranian Journal of Medical Sciences
https://www.readbyqxmd.com/read/29748864/the-effect-of-intraosseous-local-anesthesia-of-4-articaine-with-1-100-000-epinephrine-on-pulpal-blood-flow-and-pulpal-anesthesia-of-mandibular-molars-and-canines
#8
Kadkao Vongsavan, Tshering Samdrup, Kanittha Kijsamanmith, Praphasri Rirattanapong, Noppakun Vongsavan
OBJECTIVES: The aim of this study was to determine the effect of intraosseous (IO) anesthesia with 4% articaine and 1:100,000 epinephrine on pulpal blood flow (PBF) and pulpal anesthesia of mandibular first molars and canines in human subjects. MATERIALS AND METHODS: Ten healthy volunteers with intact mandibular first molar and canine were given an osteocentral technique of IO injection using the Quick Sleeper 5 system and 4% articaine with 1:100,000 epinephrine at distal site of mandibular first molar...
May 10, 2018: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29748039/comparing-panoramic-radiographs-and-cone-beam-computed-tomography-impact-on-radiographic-features-and-differential-diagnoses
#9
Li Zhen Lim, Ricardo J Padilla, Glenn J Reside, Donald A Tyndall
OBJECTIVES: The aims of this study were to determine whether lesion features appear differently on panoramic radiography (PAN) and cone beam computed tomography (CBCT), and whether the use of CBCT affects diagnostic accuracy and observers' confidence in comparison with PAN. STUDY DESIGN: Three oral and maxillofacial radiologists reviewed 33 sets of PAN images and CBCT images of biopsy-proven lesions. They described 12 different lesion features and provided up to 3 ranked differential diagnoses, as well as their confidence with respect to those diagnoses...
April 17, 2018: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/29746702/a-patient-with-neutropenic-fever-and-intraosseous-gas
#10
Bruno Ali Lopez Luis, Francisco Javier Antiga-López, Edgar Ortiz-Brizuela
No abstract text is available yet for this article.
May 8, 2018: QJM: Monthly Journal of the Association of Physicians
https://www.readbyqxmd.com/read/29743745/post-traumatic-intraosseous-leptomeningeal-cyst
#11
Francisco Barbosa de Araújo Neto, Vinícius Martins Valois, Marco Vinícius Dias, Sérgio Furlan, Dalton Yukio Araújo Fugita
No abstract text is available yet for this article.
March 2018: Radiologia Brasileira
https://www.readbyqxmd.com/read/29740250/ilizarov-method-in-combination-with-autologous-mesenchymal-stem-cells-from-iliac-crest-shows-improved-outcome-in-tibial-non-union
#12
Hui Zhang, Feng Xue, Hai Jun Xiao
Autologous bone grafting and ilizarov technique are the preferred mode of treatment for bone nonunion, studies suggest that bone marrow derived mesenchymal stem cells can be effective in treatment of tibial non-union where there is length of bone defect. The current study investigates the beneficial clinical outcome of combining the ilizarov procedure with intraosseous injection of autologous mesenchymal stem cells. The open-label study enrolled 25 patients with infected tibial non-union at the Shanghai Fengxian District Central Hospital, Shanghai, China between April 2010 and July 2014...
May 2018: Saudi Journal of Biological Sciences
https://www.readbyqxmd.com/read/29735402/demographics-and-referral-patterns-of-a-university-based-oral-maxillofacial-radiology-clinic-over-a-20-year-period
#13
Chen Nadler, Linda Lee
OBJECTIVE: The aim of this study was to review the referral patterns, distribution of interpretations, and type of diagnostic imaging used in a university based oral maxillofacial radiology clinic for patients referred for consultation from both dental and nondental clinicians. STUDY DESIGN: The database of the Special Procedures clinic in the oral radiology department of the University of Toronto, Faculty of Dentistry, containing over 5000 entries, from 1993 to 2013, was queried...
March 23, 2018: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/29732471/intraosseous-schwannoma-of-the-occipital-bone-a-case-report
#14
Francois Mathieu, Taylor J Abel, Lili-Naz Hazrati, James T Rutka
OBJECT: Intraosseous schwanomma of the calvarium METHODS: This paper reports the case of a 7-year-old boy who presented with an intraosseous schwanomma involving the occipital bone and provides a brief overview of the literature. RESULTS: The patient presented with a mass in the midline occipital region. Neuroimaging revealed a lytic lesion in the occipital bone with lack of enhancement on gadolinium MRI sequences. A gross total resection was performed, and histopathological analysis confirmed the diagnosis of schwannoma...
May 7, 2018: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/29727423/intraosseous-access-during-newborn-resuscitation-it-may-be-fast-but-is-it-safe
#15
Taylor Sawyer, Akira Nishisaki
No abstract text is available yet for this article.
May 2018: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/29724649/anatomical-variations-of-vertebral-artery-and-c2-isthmus-in-atlanto-axial-fusion-consecutive-surgical-100-cases
#16
Bong Ju Moon, Kyung Ho Choi, Dong Ah Shin, Seong Yi, Keung Nyun Kim, Do Heum Yoon, Yoon Ha
VA anomalies in extra- and intraosseous regions of the craniovertebral junction (CVJ) is considered very carefully during the posterior screw fixation for the atlantoaxial instability (AAI). This study aims to compare the incidence and variations of VA anomalies, isthmus and pedicle size of C2 in 100 patients with AAI due to congenital skeletal anomaly (CSA) and acquired disease by using three-dimensional CT angiograms (3D CTA) before surgery. The CSA group contained 48 patients and the acquired disease group consisted of 52...
April 30, 2018: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29723635/subchondral-bone-circulation-in-osteoarthritis-of-the-human-knee
#17
Roy K Aaron, Jennifer R Racine, Anne Voisinet, Peter Evangelista, Jonathan P Dyke
OBJECTIVE: The hypothesis of this study is that human subchondral bone exhibits abnormal patterns of perfusion in osteoarthritis (OA) that can be characterized by kinetic parameters of blood flow using dynamic contrast enhanced (DCE) MRI. DESIGN: Fifteen subjects with advanced OA of the knee and 7 control subjects without OA were studied at 1.5 Tesla with DCE-MRI. Region of interest (ROIs) analysis of pharmacokinetic perfusion parameters were used to examine initial uptake and washout of the contrast agent in the lateral tibial plateau...
April 30, 2018: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/29706728/acute-arthrodesis-of-interphalangeal-joints-of-the-hand-in-traumatic-injuries
#18
Mark Tan, Sean Wei Loong Ho, Sreedharan Sechachalam
Background: Trauma resulting in severe comminution, bone loss, and articular involvement of the fingers is a challenging injury. Osteosynthesis of the digits is nonviable when there is an inability to restore a stable articular surface adequately. Acute arthrodesis of the proximal and distal interphalangeal joints may be an option in such scenarios. The aim of this study is to evaluate the role of finger joint arthrodesis in the setting of trauma, in terms of fusion rates and clinical outcomes...
April 2018: Journal of Hand and Microsurgery
https://www.readbyqxmd.com/read/29706215/longitudinal-eruptive-and-posteruptive-tooth-movements-studied-on-oblique-and-lateral-cephalograms-with-implants
#19
Xiaoyun Zhang, Sheldon Baumrind, Gui Chen, Huizhong Chen, Yi Liang, Tianmin Xu
INTRODUCTION: The purpose of this study was to investigate the eruptive and posteruptive tooth displacements of untreated growing subjects longitudinally and the potential connections between posteruptive displacement of the maxillary and mandibular first molars and skeletal facial growth. METHODS: The sample comprised 11 series of right 45° oblique cephalograms and lateral cephalograms of untreated children with metallic implants of the Björk type obtained from the archives of a growth study...
May 2018: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/29703208/badge-a-synthetic-antagonist-for-ppar%C3%AE-prevents-steroid-related-osteonecrosis-in-a-rabbit-model
#20
Na Yuan, Jia Li, Meng Li, Wenchen Ji, Zhaogang Ge, Lihong Fan, Kunzheng Wang
BACKGROUND: It was indicated that inhibition of PPARγ probably represents a novel therapy for steroid-related osteonecrosis. In this study, we investigated the preventive effects of PPARγ inhibition on steroid-related osteonecrosis in a rabbit model. METHODS: Rabbits were randomly divided into three groups (normal group, model group and BADGE group). Osteonecrosis was induced in rabbits in the model group and the BADGE group. The BADGE group also received bisphenol a diglycidyl ether(BADGE), a PPARγ antagonist, for 6 weeks...
April 27, 2018: BMC Musculoskeletal Disorders
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