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https://www.readbyqxmd.com/read/28433980/a-paediatric-case-of-bilateral-mandibular-condyle-fracture-presenting-with-bloody-otorrhoea-following-trauma
#1
Yat Chun Chan, Kwan Leong Au-Yeung
A 7-year-old boy presented to the emergency department with bilateral bloody otorrhoea after falling from his scooter. Skull base fracture was suspected. CT showed no evidence of skull base fracture but bilateral mandibular condyle and external acoustic canals fractures. We report this case to illustrate a rare possibility of bilateral external acoustic canal fracture associated with condylar fracture in trauma patients presented with bloody otorrhoea.
April 22, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28429855/coincidence-of-mandibular-fractures-with-isolated-posterior-maxillary-sinus-fractures
#2
Sebastian Blatt, Roman Rahimi-Nedjat, Keyvan Sagheb, Lisa Piechowiak, Christian Walter, Dan Brüllmann
BACKGROUND/AIM: There is no data available to show whether there is a relationship between mandibular fractures and isolated fractures of the posterior and/or latera wals of the maxillary sinus. The aim of this study was to determine whether there is a coincidence between these fracture patterns. METHODS: Four hundred large volume cone beam computed tomography scans (CBCT) of patients with a fracture of the mandible between 2008 and 2013 were analyzed retrospectively...
April 21, 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/28429403/accuracy-of-computed-tomographic-arthrography-for-assessment-of-articular-cartilage-defects-in-the-ovine-stifle
#3
Fanny Hontoir, Peter Clegg, Vincent Simon, Nathalie Kirschvink, Jean-Francois Nisolle, Jean-Michel Vandeweerd
Articular cartilage defects are one of the features of osteoarthritis in animals and humans. Early detection of cartilage defects is a challenge in clinical veterinary practice and also in translational research studies. An accurate, diagnostic imaging method would be desirable for detecting and following up lesions in specific anatomical regions of the articular surface. The current prospective experimental study aimed to describe the accuracy of computed tomographic arthrography (CTA) for detecting cartilage defects in a common animal model used for osteoarthritis research, the ovine stifle (knee, femoropatellar/femorotibial) joint...
April 20, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28429040/retraction-force-necessary-to-expose-the-mandibular-neck-in-risdon-and-high-cervical-anteroparotid-transmasseteric-approaches-an-anatomic-comparative-study
#4
Jérôme Adnot, Aliosha Feuss, Fabrice Duparc, Olivier Trost
PURPOSE: The purpose of this anatomic study was to compare the retraction force necessary to expose the mandibular neck in the Risdon and the high cervical anteroparotid transmasseteric (HAT) approaches. METHODS: An anatomic study was performed on 18 formalin-embalmed cadavers. We performed a Risdon approach on the left side, and an HAT approach on the right side in all the cases. The subjects were placed in a normative frame and the force necessary to maintain a satisfactory exposure of the condyle was measured with a system of cables, pulleys, and mechanical dynamometer...
April 20, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28425824/isolated-acl-versus-multiple-knee-ligament-injury-associations-with-patient-characteristics-cartilage-status-and-meniscal-tears-identified-during-acl-reconstruction
#5
Ronald W B Wyatt, Maria C S Inacio, Kate D Bellevue, Alan L Schepps, Gregory B Maletis
OBJECTIVES: The objectives of this study were to determine (1) if patients undergoing reconstruction of an isolated anterior cruciate ligament (ACL) tear had different characteristics (age, gender, body mass index [BMI]) than patients undergoing ACL reconstruction (ACLR) with multiple knee ligament (MKL) tears and (2) whether there was a difference in prevalence of articular cartilage injury and meniscus tears between these two groups. METHODS: Patients undergoing primary ACLR between February 2005 and September 2013 were identified through an ACLR registry...
April 20, 2017: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/28421361/erratum-to-a-comparative-study-of-the-bone-contact-to-zirconium-and-titanium-implants-after-8%C3%A2-weeks-of-implantation-in-rabbit-femoral-condyles
#6
Abdullah Aldosari AlFarraj, Anil Sukumaran, Mohammad D Al Amri, Aja Bart Van Oirschot, John A Jansen
No abstract text is available yet for this article.
April 18, 2017: Odontology
https://www.readbyqxmd.com/read/28419987/extracellular-matrix-mediates-bmp-2-in-a-model-of-temporomandibular-joint-osteoarthritis
#7
Maya Shirakura, Vardit Kram, Jennifer Robinson, Sheena Sikka, Tina M Kilts, Sunil Wadhwa, Marian F Young
Temporomandibular joint (TMJ) osteoarthritis (OA) is a complex disease that affects both cartilage and subchondral bone. It is accompanied by loss of extracellular matrix (ECM) and may be controlled by bone morphogenetic protein-2 (BMP-2). We analyzed the effect of BMP-2 in both cartilage and subchondral bone in a TMJ-OA animal model that is deficient in biglycan (Bgn) and fibromodulin (Fmod) (Bgn-/-Fmod-/-). Whole mandibles were dissected from 3-week-old wild-type (WT) and Bgn-/-Fmod-/- mice and incubated with and without 250 µg/mL BMP-2 for 2 days using an explant culture system...
April 19, 2017: Cells, Tissues, Organs
https://www.readbyqxmd.com/read/28417851/nuclear-medicine-techniques-in-pediatric-bone-imaging
#8
REVIEW
Laura A Drubach
An important mandate when imaging pediatric patients is the reduction of radiation exposure to the lowest possible level consistent with good quality diagnostic imaging, so individual selection of radiopharmaceutical dosage and imaging technique is essential. Although the logistics of image acquisition and the approach to interpretation mirror the more common use in adults, the challenges of imaging young children typically require greater attention to patient preparation, positioning, and supervision during imaging, with the use of parental or family engagement in the procedure, gentle restraint, and occasionally the need for sedation...
May 2017: Seminars in Nuclear Medicine
https://www.readbyqxmd.com/read/28415391/biological-activity-evaluation-of-magnesium-fluoride-coated-mg-zn-zr-alloy-in-vivo
#9
Hongfeng Jiang, Jingbo Wang, Minfang Chen, Debao Liu
AIM: To explore the biodegradable characteristics and biological properties, which could promote new bone formation, of MgF2 coated magnesium alloy (Mg-3wt%Zn-0.5wt%Zr) in rabbits. METHODS: Magnesium alloy with MgF2 coating was made and the MgF2/Mg-Zn-Zr was implanted in the femoral condyle of rabbits. Twelve healthy adult Japanese white rabbits in weight of 2.8-3.2kg were averagely divided into A(Mg-Zn-Zr) group and B(MgF2/MgZn-Zr) group. Indexes such as microstructural evolution, SEM scan, X-ray, Micro-CT and mechanical properties were observed and detected at 1th day, 2th, 4th, 8th, 12th, 24th week after implantation...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28414988/response-of-mandibular-condyles-of-juvenile-and-adult-rats-to-abnormal-occlusion-and-subsequent-exemption
#10
Guang Zeng, Bin Kuang, Wen-Xing Xun, Gao-Tong Ren, Ke-Wen Wei
OBJECTIVE: The adaptation capacities of the mandibular condyle in response to mechanical stimuli might be different between juveniles and adults, but has not been compared. This study aimed to investigate whether abnormal molar occlusion and subsequent molar extraction could lead to different remodeling responses in the mandibular condyles of juvenile and adult rats. METHODS: Abnormal molar occlusion (AMO) was established in the 5- and 16-wk old rats by moving their maxillary left and mandibular right third molars distally...
March 28, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28414870/three-dimensional-skeletal-mandibular-changes-associated-with-herbst-appliance-treatment
#11
B Q Souki, P L C Vilefort, D D Oliveira, I Andrade, A C Ruellas, M S Yatabe, T Nguyen, L Franchi, J A McNamara, L H S Cevidanes
OBJECTIVES: Three-dimensional evaluation of skeletal mandibular changes following Herbst appliance treatment. SETTING AND SAMPLE POPULATION: Retrospective case-control study, based on a sample size calculation. Twenty-five pubertal patients treated with Herbst appliance (HAG), and 25 matched Class II patients who received other non-orthopaedic dental treatments (CG). MATERIAL AND METHODS: Three-dimensional models were generated from pre-treatment (T0) and post-treatment (T1) cone beam computed tomograms...
May 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28413560/occipital-condyle-syndrome-as-the-first-sign-of-skull-metastasis-from-lung-cancer
#12
Satoru Takeuchi, Hideo Osada, Kimihiro Nagatani, Katsuji Shima
No abstract text is available yet for this article.
January 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28413553/excision-of-hypoglossal-neurinoma-by-condyle-sparing-suboccipital-keyhole-approach
#13
Harjinder Bhatoe
Hypoglossal neurinomas are rare tumors that present with gradually worsening unilateral wasting of the tongue. The tumors often attain large size prior to detection and often extend into the hypoglossal canal. Large tumors can distort the brainstem and cerebellum. Preoperative diagnosis can often be made by magnetic resonance imaging (MRI) with contrast enhancement. Traditionally, surgery for these tumors has entailed large transcondylar approaches, often necessitating occipitocervical stabilization. We managed one 23-year-old female patient with a large hypoglossal neurinoma...
January 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28412789/-development-and-preliminary-clinical-application-of-home-made-temporomandibular-joint-prostheses
#14
D M He, L Z Zhang, C Yang
Objective: To explore the clinical application of home-made temporomandibular joint (TMJ) prostheses. Methods: Self-developed TMJ prostheses were applied for end stage osteoarthritis, TMJ ankylosis, condylar tumors after biomechanical examination. The stability of the prostheses toward bone was evaluated during operation. Post-operative CT scans and clinical follow-ups were taken to check changes of mouth opening, position of the prostheses, bone resorption around the screws, and heterotopic bone formation around artificial condyle...
April 9, 2017: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/28412268/how-is-third-molar-status-associated-with-the-occurrence-of-mandibular-angle-and-condyle-fractures
#15
Shuai Xu, Jun-Jie Huang, Yu Xiong, Ying-Hui Tan
PURPOSE: Third molars (M3s) have been hypothesized to be associated with the risk of mandibular angle fracture and mandibular condylar fracture. The authors systematically estimated the relative risk (RR) of M3 status for the development of mandibular angle fracture and mandibular condylar fracture through a meta-analysis of cohort studies. MATERIALS AND METHODS: In this systematic review, the PubMed, EMBASE, and Cochrane Library databases were searched from inception to October 2016...
March 23, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28410886/the-autogenous-graft-versus-transport-distraction-osteogenesis-for-reconstruction-of-the-ramus-condyle-unit-a-prospective-comparative-study
#16
S Kohli, S Mohanty, S Singh, Sandeep, J Dabas, R Patel
This study aimed to compare the joint function and morphology achieved following condylar reconstruction using sternoclavicular grafts (SCG) versus transport distraction osteogenesis (TDO) in temporomandibular joint (TMJ) ankylosis patients. Twenty-two patients with TMJ ankylosis underwent TMJ reconstruction with SCG or TDO (n=11 each). Radiographic and clinical evaluations were performed at 1 week and at 1, 3, and 6 months post-surgery. Clinical criteria examined included the duration of surgery, mean postoperative mouth opening, excursive jaw movements, and pain scores...
April 11, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28409726/the-suboccipital-ligament
#17
Kelsey Alabaster, M Fred Bugg, Bruno Splavski, Frederick A Boop, Kenan I Arnautovic
OBJECTIVE A fibrous structure located dorsal to the dura at the posterior craniocervical junction stretches horizontally between the bilateral occipital condyles and the upper borders of the C-1 laminae. Partially covered by the occipital bone, this structure is always encountered when the bone is removed from the foramen magnum rim during approaches to the posterior cranial fossa. Although known to surgeons, this structure has not been defined, studied, or named. The most appropriate name for this structure is "the suboccipital ligament," and a detailed rationale for this name is provided...
April 14, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28408956/a-controversy-with-respect-to-occlusion
#18
REVIEW
Shunji Fukushima
There are very little controversies on occlusion in healthy individuals, where centric relation is regarded as the criterion for assessing the present occlusion and also for establishing a new occlusal relationship between the upper and the lower jaws. On the other hand, the occlusal position in patients with deformed condyles still remains to be clarified. In this review, the effectiveness and limits of centric relation in these patients are discussed. In addition, the muscle induced occlusal positions, such as the muscular position and the terminal positions of habitual closing movements, are suggested as a substitution for centric relation...
August 2016: Japanese Dental Science Review
https://www.readbyqxmd.com/read/28408163/angioleiomyoma-in-the-posterior-knee-a-case-report-and-literature-review
#19
Raymond Klumpp, Riccardo Compagnoni, Gianluigi Patelli, Carlo Lauro Trevisan
The authors present a case of angioleiomyoma situated in the posterior knee. A 47-year-old Caucasian woman presented in 2011 with recurrent stabbing pain on the lateral aspect of her right knee. She reported having pain for the last 6years. She had no history of trauma. In 2008 she was treated with a diagnostic arthroscopy and transposition of the tibial tuberosity, with no benefit to her symptoms. Electromyography of the lower limbs showed asymmetry of the amplitude of sensitive action potential of the superficial fibular nerve...
April 10, 2017: Knee
https://www.readbyqxmd.com/read/28405580/temporomandibular-joint-reconstruction-with-alloplastic-prosthesis-the-outcomes-of-four-cases
#20
Jung-Hyun Park, Eun Jo, Hoon Cho, Hyung Jun Kim
BACKGROUND: The purpose of this study is to evaluate the outcomes of four patients receiving stock Biomet TMJ prosthesis for reconstruction of the TMJs. METHODS: TMJ reconstruction with stock Biomet TMJ prosthesis was performed in four patients who had joint damages by trauma, tumor, resorption, and ankylosis, which represent the indications of alloplastic prosthesis. RESULTS: Loss of condyle from trauma and resorption of joint are good indications for prosthesis, but the patients should be informed about limitation of jaw movement...
December 2017: Maxillofacial Plastic and Reconstructive Surgery
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