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https://www.readbyqxmd.com/read/29771857/erratum-to-what-injury-mechanism-and-patterns-of-ligament-status-are-associated-with-isolated-coronoid-isolated-radial-head-and-combined-fractures
#1
Ji-Ho Lee
No abstract text is available yet for this article.
June 2018: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/29769591/clinical-retrospective-case-control-study-on-the-mechanics-of-obstacle-in-mouth-opening-and-malocclusion-in-patients-with-maxillofacial-fractures
#2
Hai-Hua Zhou, Kun Lv, Rong-Tao Yang, Zhi Li, Xue-Wen Yang, Zu-Bing Li
This study aims to identify and distinguish various factors that may influence the clinical symptoms (limited mouth opening and malocclusion) in patients with maxillofacial fractures. From January 2000 to December 2009, 963 patients with maxillofacial fractures were enrolled in this statistical study to aid in evaluating the association between various risk factors and clinical symptoms. Patients with fractured posterior mandibles tended to experience serious limitation in mouth opening. Patients who sustained coronoid fractures have the highest risk of serious limitation in mouth opening (OR = 9...
May 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29765689/a-new-archaic-baleen-whale-toipahautea-waitaki-early-late-oligocene-new-zealand-and-the-origins-of-crown-mysticeti
#3
Cheng-Hsiu Tsai, R Ewan Fordyce
A new genus and species of extinct baleen whale † Toipahautea waitaki (Late Oligocene, New Zealand) is based on a skull and associated bones, from the lower Kokoamu Greensand, about 27.5 Ma (local upper Whaingaroan Stage, early Chattian). The upper jaw includes a thin, elongate and apparently toothless maxilla, with evidence of arterial supply for baleen. Open sutures with the premaxilla suggest a flexible (kinetic) upper jaw. The blowhole is well forward. The mandible is bowed laterally and slightly dorsally; unlike the Eomysticetidae, there are no mandibular alveoli, and the coronoid process is tapered and curved laterally...
April 2018: Royal Society Open Science
https://www.readbyqxmd.com/read/29754856/three-dimensional-dental-and-craniofacial-manifestations-in-patients-with-late-diagnosis-of-mucopolysaccharidosis-type-ii-report-of-2-cases
#4
Rafaela de Oliveira Torres, Andréa Vaz Braga Pintor, Fábio Ribeiro Guedes, Lucia Helena Soares Cevidanes, Liana Bastos Freitas-Fernandes, Antônio Carlos de Oliveira Ruellas, Ivete Pomarico Ribeiro de Souza
The objective of this study was to report the clinical evaluation results and 3-dimensional (3-D) dental and craniofacial characteristics observed in 2 male patients with mucopolysaccharidosis type II. The patients were evaluated clinically (soft tissue evaluation, evaluation of occlusion, periodontal and dental examinations) and by using craniofacial computed tomography, with evaluation of 3-D images in ITK-Snap v. 2.2 (Penn Image Computing and Science Laboratory, Philadelphia, PA; http://www.itksnap.org/) and 3-D Slicer (http://www...
April 16, 2018: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/29742575/extra-articular-ankylosis-of-the-coronoid-process-with-the-zygomatic-bone-a-rare-case-treated-with-an-alternative-approach
#5
Maria Clara Rodrigues Pinheiro, Maria das Graças Rodrigues Pinheiro, Lucas Rodrigues Pinheiro, Sergio de Melo Alves-Junior, Joao de Jesus Viana Pinheiro, Andre Luis Ribeiro Ribeiro
No abstract text is available yet for this article.
May 8, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29727895/in-vivo-axial-humero-ulnar-rotation-in-normal-and-dysplastic-canine-elbow-joints
#6
Thomas Rohwedder, Martin Fischer, Peter Böttcher
OBJECTIVE: To prospectively compare relative axial (internal-external) humero-ulnar rotation in normal and dysplastic canine elbow joints. MATERIAL AND METHODS: Six normal elbows (five dogs) and seven joints (six dogs) with coronoid disease were examined. After implantation of 0.8 mm tantalum beads into humerus and ulna, biplanar x-ray movies of the implanted elbows were taken while dogs were walking on a treadmill. Based on the 2D bead coordinates of the synchronized x-ray movies virtual 3D humero-ulnar animations were calculated...
April 2018: Tierärztliche Praxis. Ausgabe K, Kleintiere/Heimtiere
https://www.readbyqxmd.com/read/29721450/multibody-modelling-of-ligamentous-and-bony-stabilizers-in-the-human-elbow
#7
REVIEW
Mara Terzini, Elisabetta Maria Zanetti, Alberto Luigi Audenino, Giovanni Putame, Laura Gastaldi, Stefano Pastorelli, Elisa Panero, Arman Sard, Cristina Bignardi
The elbow ligamentous and bony structures play essential roles in the joint stability. Nevertheless, the contribution of different structures to joint stability is not yet clear and a comprehensive experimental investigation into the ligament and osseous constraints changes in relation to joint motions would be uphill and somehow unattainable, due to the impossibility of obtaining all the possible configurations on the same specimen. Therefore, a predictive tool of the joint behavior after the loss of retentive structures would be helpful in designing reconstructive surgeries and in pre-operative planning...
October 2017: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/29709293/mandibular-ramus-shape-variation-and-ontogeny-in-homo-sapiens-and-homo-neanderthalensis
#8
Claire E Terhune, Terrence B Ritzman, Chris A Robinson
As the interface between the mandible and cranium, the mandibular ramus is functionally significant and its morphology has been suggested to be informative for taxonomic and phylogenetic analyses. In primates, and particularly in great apes and humans, ramus morphology is highly variable, especially in the shape of the coronoid process and the relationship of the ramus to the alveolar margin. Here we compare ramus shape variation through ontogeny in Homo neanderthalensis to that of modern and fossil Homo sapiens using geometric morphometric analyses of two-dimensional semilandmarks and univariate measurements of ramus angulation and relative coronoid and condyle height...
April 27, 2018: Journal of Human Evolution
https://www.readbyqxmd.com/read/29706216/three-dimensional-computed-tomography-analysis-of-mandibular-morphology-in-patients-with-facial-asymmetry-and-mandibular-retrognathism
#9
Kug-Ho You, Kyung-Ho Kim, Kee-Joon Lee, Hyoung-Seon Baik
INTRODUCTION: The purpose of this study was to analyze the morphologic features of skeletal units in the mandibles of patients with facial asymmetry and mandibular retrognathism using cone-beam computed tomography. METHODS: The subjects consisted of 50 adults with facial asymmetry and mandibular retrognathism, divided into the symmetry group (n = 25) and the asymmetry group (n = 25) according to the degree of menton deviation. Three-dimensional computed tomography scans were obtained with cone beam computed tomography...
May 2018: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/29684307/osteochondroma-of-the-zygomatic-arch-a-case-report-and-review-of-the-literature
#10
R Patel, G Obeid
An osteochondroma, when reported in the maxillofacial region, is a benign neoplasm that involves the skull base, maxillary sinus, zygomatic arch, or mandible. Most commonly, the osteochondroma occurs in the coronoid process and the condyle. One rare subtype of osteochondroma reported in the literature, termed Jacob disease, arises from the coronoid process and interferes with the zygomatic arch. This report describes a unique case of an isolated osteochondroma arising from the zygomatic arch and interfering with the coronoid process, which was treated through surgical excision by an intraoral approach...
March 31, 2018: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29678397/varus-posteromedial-rotatory-instability-a-biomechanical-analysis-of-posterior-bundle-of-the-medial-ulnar-collateral-ligament-reconstruction
#11
Matthew J Gluck, Christina M Beck, Elan J Golan, Philip Nasser, Dave R Shukla, Michael R Hausman
BACKGROUND: Recently, there has been growing interest in the involvement of the posterior bundle of the medial ulnar collateral ligament (pMUCL) in varus posteromedial rotatory instability (PMRI). Varus PMRI has been observed clinically, but the degree of involvement of the pMUCL remains unclear. This study assessed the degree to which the pMUCL is involved in stabilizing the elbow and the feasibility of a pMUCL reconstruction to restore stability. METHODS: Movements simulating PMRI were performed in 8 cadaveric elbows...
April 17, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29666688/synovial-haemangioma-of-the-elbow-a-rare-paediatric-case-and-imaging-dilemma
#12
Han G Hoe, Faizah M Zaki, Abdul H A Rashid
Synovial haemangiomas are rare benign vascular proliferations arising in synovium-lined surfaces. While the knee is by far the joint most commonly involved, this condition can also occur in the elbow. We report an eight-year-old boy who presented to the National University of Malaysia Medical Centre, Kuala Lumpur, Malaysia, in 2016 with a left elbow swelling of one year's duration. Magnetic resonance imaging showed a lobulated intra-articular mass with intermediate signal intensity on T1-weighted imaging and low signal punctate and linear structures within the hyperintense mass on T2-weighted imaging...
February 2018: Sultan Qaboos University Medical Journal
https://www.readbyqxmd.com/read/29664804/temporary-bridge-plate-stabilization-of-unstable-elbow-fractures-and-dislocations
#13
David Edelman, Asif M Ilyas
Unstable fracture-dislocations of the elbow, and in particular the "terrible triad" injury consisting of an elbow dislocation with a fracture of the radial head and coronoid, are complex injuries that can be plagued and complicated by persistent instability. Acute and chronic instability is a difficult problem and is best managed early by avoidance and restoration of stability. A number of treatment options have been proposed to manage acute postfixation instability of the elbow joint. Traditional stabilization options include immobilization with splinting or casting, cross-articular pinning, and external fixation (hinged or static), followed by early physical therapy...
April 11, 2018: Techniques in Hand & Upper Extremity Surgery
https://www.readbyqxmd.com/read/29662127/human-mandibular-shape-is-associated-with-masticatory-muscle-force
#14
Tanya Sella-Tunis, Ariel Pokhojaev, Rachel Sarig, Paul O'Higgins, Hila May
Understanding how and to what extent forces applied to the mandible by the masticatory muscles influence its form, is of considerable importance from clinical, anthropological and evolutionary perspectives. This study investigates these questions. Head CT scans of 382 adults were utilized to measure masseter and temporalis muscle cross-sectional areas (CSA) as a surrogate for muscle force, and 17 mandibular anthropometric measurements. Sixty-two mandibles of young individuals (20-40 years) whose scans were without artefacts (e...
April 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29611183/maternal-environment-and-craniofacial-growth-geometric-morphometric-analysis-of-mandibular-shape-changes-with-in-utero-thyroxine-overexposure-in-mice
#15
Matthew J Kesterke, Margaret A Judd, Mark P Mooney, Michael I Siegel, Mohammed Elsalanty, R Nicole Howie, Seth M Weinberg, James J Cray
An estimated 3% of US pregnancies are affected by maternal thyroid dysfunction, with between one and three of every 1000 pregnancies being complicated by overactive maternal thyroid levels. Excess thyroid hormones are linked to neurological impairment and excessive craniofacial variation, affecting both endochondral and intramembranous bone. Using a geometric morphometric approach, this study evaluates the role of in utero thyroxine overexposure on the growth of offspring mandibles in a sample of 241 mice. Canonical variate analysis utilized 16 unilateral mandibular landmarks obtained from 3D micro-computed tomography to assess shape changes between unexposed controls (n = 63) and exposed mice (n = 178)...
April 2, 2018: Journal of Anatomy
https://www.readbyqxmd.com/read/29610971/no-neurovascular-damage-after-creation-of-an-accessory-anteromedial-portal-for-arthroscopic-reduction-and-fixation-of-coronoid-fractures
#16
Paolo Arrigoni, Davide Cucchi, Enrico Guerra, Francesco Luceri, Simone Nicoletti, Alessandra Menon, Pietro Randelli
PURPOSE: Arthroscopic reduction and internal fixation for coronoid process fractures has been proposed to overcome limitations of open approaches. Currently, arthroscopy is most frequently used to assist insertion of a retrograde guide wire for a retrograde cannulated screw. The present anatomical study presents an innovative arthroscopic technique to introduce an antegrade guide wire from an accessory anteromedial portal and evaluates its safety and reproducibility. METHODS: Six fresh-frozen cadaver specimens were obtained and prepared to mimic an arthroscopic setting...
April 2, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29557868/articular-contact-area-and-pressure-in-posteromedial-rotatory-instability-of-the-elbow
#17
Enrico Bellato, James S Fitzsimmons, Youngbok Kim, Daniel R Bachman, Lawrence J Berglund, Alexander W Hooke, Shawn W O'Driscoll
BACKGROUND: Joint incongruity in posteromedial rotatory instability (PMRI) has been theorized to determine early articular degenerative changes. Our hypothesis was that the articular contact area and contact pressure differ significantly between an intact elbow and an elbow affected by PMRI. METHODS: Seven cadaveric elbows were tested under gravity varus stress using a custom-made machine designed to simulate muscle loads and allow passive elbow flexion (0° to 90°)...
March 21, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29544666/reconstruction-of-the-coronoid-process-using-a-costal-osteochondral-autograft-for-acute-comminuted-coronoid-fracture-a-case-report
#18
Yukihiko Yasui, Ayako Uesugi, Toshiyuki Kataoka, Kohji Kuriyama, Masayuki Hamada
No abstract text is available yet for this article.
May 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29536555/radiographic-computed-tomographic-and-arthroscopic-diagnosis-of-radioulnar-incongruence-in-dogs-with-medial-coronoid-disease
#19
Dominique J Griffon, Ayman A Mostafa, Laurent Blond, David J Schaeffer
OBJECTIVE: To characterize radioulnar incongruence (RUI) in large dogs with medial coronoid disease (MCD) and determine the agreement between radiography, computed tomography (CT), and arthroscopy. STUDY DESIGN: Prospective observational case series. ANIMALS: Twenty-four large-breed dogs under 3 years of age with confirmed MCD. METHODS: MCD and incongruence were evaluated by radiographs and CT. RUI was measured along the ulnar commissure, mid-body, and apex of the medial coronoid process (MCP) by CT and arthroscopy...
April 2018: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/29498981/anatomic-considerations-for-temporomandibular-joint-vascularized-composite-allotransplantation
#20
Nima Khavanin, Edward H Davidson, Diana Y Lee, Patrick Byrne, Amir H Dorafshar
Concomitant temporomandibular joint (TMJ) transplantation is an obvious advancement in the reconstructive armamentarium for face transplantation in scenarios involving TMJ ankylosis. This study investigates the fidelity of mandibular morphology and explores the feasibility of bilateral mandibular condyle transfer in facial vascularized composite allotransplantation. Geometric analysis was performed on 100 skeletally mature maxillofacial computed tomography scans. Exclusion criteria included mandibular trauma and dentoalveolar disease...
March 1, 2018: Journal of Craniofacial Surgery
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