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https://www.readbyqxmd.com/read/28098589/can-mandibular-condylar-mobility-sonography-measurements-predict-difficult-laryngoscopy
#1
Weidong Yao, Yumei Zhou, Bin Wang, Tao Yu, Zhongbing Shen, Hao Wu, Xiaoju Jin, Yuanhai Li
BACKGROUND: Limited mandibular condylar mobility plays an important role in difficult laryngoscopy. Indirect assessment methods, such as mouth opening, have been proven to be useful predictors of difficult laryngoscopy. Sonography is a new direct assessment method for the limited mandibular condylar mobility. However, whether this method could be used in predicting difficult laryngoscopy still remains unknown. This study aimed to observe its ability to predict difficult laryngoscopy. METHODS: Adult patients who were administered tracheal intubations for elective surgery under general anesthesia were enrolled in the study...
January 16, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28097087/identification-of-the-vascular-endothelial-growth-factor-signalling-pathway-by-quantitative-proteomic-analysis-of-rat-condylar-cartilage
#2
Liting Jiang, Yinyin Xie, Li Wei, Qi Zhou, Xing Shen, Xinquan Jiang, Yiming Gao
Angiogenesis mediated by vascular endothelial growth factor (VEGF) is known to play an important role in regulating cartilage remodelling and endochondral ossification. However, the details of how VEGF signalling mechanisms affect condyle remodelling in response to alterations in functional loading remains unclear. To explore this, eighty 16-day-old male SD rats were divided into two equal groups which were fed either a soft/powdery diet or a hard diet for 4 weeks; the stiffness of the diet results in alteration of mastication force and hence temporomandibular joint (TMJ) development...
January 2017: FEBS Open Bio
https://www.readbyqxmd.com/read/28095486/three-dimensional-assessment-of-temporomandibular-joint-using-mri-cbct-image-registration
#3
Mohammed A Q Al-Saleh, Kumaradevan Punithakumar, Manuel Lagravere, Pierre Boulanger, Jacob L Jaremko, Paul W Major
PURPOSE: To introduce a new approach to reconstruct a 3D model of the TMJ using magnetic resonance imaging (MRI) and cone-beam computed tomography (CBCT) registered images, and to evaluate the intra-examiner reproducibility values of reconstructing the 3D models of the TMJ. METHODS: MRI and CBCT images of five patients (10 TMJs) were obtained. Multiple MRIs and CBCT images were registered using a mutual information based algorithm. The articular disc, condylar head and glenoid fossa were segmented at two different occasions, at least one-week apart, by one investigator, and 3D models were reconstructed...
2017: PloS One
https://www.readbyqxmd.com/read/28089467/the-evolution-of-implant-design-decreases-the-incidence-of-lateral-release-in-primary-total-knee-arthroplasty
#4
Jonathan E Webb, Heidi Y Yang, Jamie E Collins, Elena Losina, Thomas S Thornhill, Jeffrey N Katz
BACKGROUND: Appropriate balancing of the patellofemoral joint (PFJ) using a lateral release can help to prevent patellar instability in total knee arthroplasty (TKA). Contemporary total knee implant designs are characterized by enhanced trochlear geometry more similar to native knee anatomy to minimize instability and reduce utilization of a lateral release. METHODS: We retrospectively reviewed consecutive TKA cases from a single senior surgeon's practice with 3 successive total knee designs: the Press-Fit Condylar (PFC), the Sigma, and the ATTUNE (DePuy, Warsaw, IN)...
December 14, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28076431/knee-cartilage-thickness-t1%C3%AF-and-t2-relaxation-time-are-related-to-articular-cartilage-loading-in-healthy-adults
#5
Sam Van Rossom, Colin Robert Smith, Lianne Zevenbergen, Darryl Gerard Thelen, Benedicte Vanwanseele, Dieter Van Assche, Ilse Jonkers
Cartilage is responsive to the loading imposed during cyclic routine activities. However, the local relation between cartilage in terms of thickness distribution and biochemical composition and the local contact pressure during walking has not been established. The objective of this study was to evaluate the relation between cartilage thickness, proteoglycan and collagen concentration in the knee joint and knee loading in terms of contact forces and pressure during walking. 3D gait analysis and MRI (3D-FSE, T1ρ relaxation time and T2 relaxation time sequence) of fifteen healthy subjects were acquired...
2017: PloS One
https://www.readbyqxmd.com/read/28072990/-the-images-of-osteoarthrosis-associated-with-anterior-disc-displacement-without-reduction-detected-by-cone-beam-ct
#6
J H Han, J Lei, M Q Liu, K Y Fu
Objective: To analyze the radiological characteristics of the condylar bone in patients with anterior disc displacement without reduction of temporomandibular joint using cone-beam CT (CBCT), and to further investigate the clinical factors possibly associated with the early-stage osteoarthritic changes. Methods: Two hundred and four individuals (≤30 years old) diagnosed as unilateral anterior disc displacement without reduction (disease duration≤1 year) were recruited. CBCT images of bilateral condyles were independently evaluated by two assessors and documented...
January 9, 2017: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/28065623/an-anatomic-investigation-into-the-relationship-between-posterior-condylar-offset-and-posterior-tibial-slope-of-one-thousand-one-hundred-thirty-eight-cadaveric-knees
#7
Douglas S Weinberg, Jeremy J Gebhart, Glenn D Wera
BACKGROUND: Posterior condylar offset (PCO) and posterior tibial slope (PTS) have critical consequences in total knee arthroplasty, especially with regards to sagittal plane balancing. However, there has only been limited investigation into the functional consequences of each, and there have only been anecdotal observations regarding any associations between PCO and PTS. METHODS: In a large osteological study of 1138 knees, standardized measurements of PCO and PTS were taken using previously described techniques on specimens of different age, race, and gender...
December 22, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28060232/a-dedicated-orthopaedic-trauma-operating-room-improves-efficiency-at-a-pediatric-center
#8
Christopher M Brusalis, Apurva S Shah, Xianqun Luan, Meaghan K Lutts, Wudbhav N Sankar
BACKGROUND: Dedicated orthopaedic trauma operating rooms have improved operating room efficiency, physician schedules, and patient outcomes in adult populations. The purpose of this study was to determine if a dedicated orthopaedic trauma operating room was associated with improved patient flow and cost savings at a level-I pediatric trauma center. METHODS: A retrospective analysis was performed for two 3-year intervals before and after implementation of a weekday, unbooked operating room reserved for orthopaedic trauma cases...
January 4, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28057096/-medial-anterior-flange-overhang-related-to-the-prosthesis-selection-determined-by-femoral-sizer-in-total-knee-arthroplasty
#9
Z H Sun, N Li, J Y Xin, J Liu, Z S Ren, H J Sun
Objective: To evaluate the medial anterior flange overhang related to the femoral prosthesis size determined by femoral sizer in total knee arthroplasty. Methods: Sixty one cases of varus knee osteoarthritis (61 knees) were analyzed from January 2014 to January 2015, 14 males and 47 females, aged (66.8±6.8) year old. 3D models of distal femur were established by Mimics, total knee arthroplasty surgeries were simulated and the medial and lateral femoral condylar anteroposterior diameter were measured. According to the AP diameter of lateral femoral condyle (lateral condyle group) and femoral sizer (sizer group), different size of the PFC Sigma femoral prosthesis models were imported to mimics, and the coverage of medial anterior femoral flange were compared...
December 20, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28056260/-research-progress-of-hoffa-fracture
#10
Y B Zhou, Q X Wang, W Chen
Hoffa fracture is a rare type of fracture confined to the coronal plane of the femoral condyle. High-energy is a common reason of Hoffa fracture, and low-energy trauma and iatrogenic injury can also cause Hoffa fracture in some cases. The commonly used classifications include Letenneur classification, CT classification, AO classification and modified AO classification. X-ray is the first choice to diagnose Hoffa fractures, fracture lines can be found. If the X-ray is negative, CT scan and MRI should be performed...
January 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/28053387/reference-axes-for-optimal-femoral-rotational-alignment-in-varus-osteoarthritic-indian-knees-a-ct-based-study
#11
A V Gurava Reddy, Rajat Kumar Mathur, Aakash Mugalur, Krishna Kiran Eachempati, Anil Reddy
BACKGROUND: Optimal rotational alignment of femoral component is important for longevity and success of total knee replacement. Whiteside line (WL), posterior condylar axis (PCA) and femoral transepicondylar axis are various intra-operative landmarks to guide femoral rotation. Each of these has its pros and cons. The aims of our study were to assess the relationship of posterior condylar axis and the antero-posterior axis of femur with the surgical epicondylar axis and evaluate whether degree of deformity or severity of osteoarthritis alters the rotational alignment of the femur when posterior condylar axis is taken as a reference...
October 2016: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/28052811/short-term-outcomes-of-mandibular-reconstruction-in-oncological-patients-using-a-cad-cam-prosthesis-including-a-condyle-supporting-a-fibular-free-flap
#12
Achille Tarsitano, Salvatore Battaglia, Valerio Ramieri, Piero Cascone, Leonardo Ciocca, Roberto Scotti, Claudio Marchetti
PURPOSE: Condylar reconstruction and replacement using alloplastic materials currently attracts much surgical interest. The major challenge is to functionally reconstruct the anatomical region; this is crucial in terms of correct mandibular function. The goal of the present study was to evaluate the clinical outcomes of and complications experienced by a series of oncological patients who underwent computer-aided design/computer-aided manufacturing (CAD/CAM) condylar reconstruction following resection-disarticulation of the mandible...
December 16, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28050992/dautrey-s-procedure-revisited-in-management-of-recurrent-mandibular-dislocation
#13
Joanna Baptist, Mohan Baliga
Mandibular dislocation occurs when the condylar head glides out of the glenoid fossa with the condyle positioned in such a way that its posterior articulating surface lying ahead of the articular eminence. Recurrent mandibular dislocation is relatively uncommon. Patient is extremely distressed and goes through a lot of discomfort. Varied etiologies have been cited in the literature, such as keeping the mouth wide open for long periods of time during dental procedures, yawning, laughing, traumatic injuries to the mandible, psychiatric disturbances, and certain drugs...
January 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28050989/nonsurgical-management-of-adult-skeletal-class-3-with-deep-bite-utilizing-mini-implants
#14
Ali G Alhalabi, Salah Mahaini, Ghalia Shebib, Khaldoun Darwich, Luai Mahaini
Malocclusions with anterior crossbite are a major esthetic and functional concern for patients. This case report presents a 27-year-old Syrian female who was diagnosed with a class 3 malocclusion, combined with anterior crossbite, deep bite, concave profile, and inadequate maxillary incisor exposure. There was a centric occlusion (CO)/centric relation (CR) discrepancy and the mandible could be manipulated to near edge-to-edge incisal relation. Correction was done by class 3 intermaxillary elastics on upper and lower mini-implants for the first 6 months, followed by preadjusted edgewise appliance...
January 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28050351/morphometric-analysis-of-the-occipital-condyle-and-its-surgical-importance
#15
Sandeep Saluja, Sushant Swaroop Das, Neelam Vasudeva
INTRODUCTION: The Occipital Condyle (OC) is an integral component of craniovertebral region which is predisposed to a wide array of traumatic, degenerative and neoplastic diseases. Frequent surgical interventions of OC are required for successful management of these conditions. Hence a meticulous anatomical knowledge of the OC is vital but variability in morphometric dimensions exist amongst different races and hinder the standardization of measurements. AIM: The aim of this study was to present a morphometric reference database for OC of the Indian population and enable comparisons with other populations...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28027269/reply-which-factors-are-associated-with-open-reduction-of-adult-mandibular-condylar-injuries
#16
Howard D Wang, Srinivas M Susarla, Amir H Dorafshar
No abstract text is available yet for this article.
January 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28024774/three-dimensional-virtual-surgery-simulation-assisted-asymmetric-bilateral-mandibular-distraction-osteogenesis-for-a-patient-with-bilateral-condylar-fractures
#17
Myung-Jin Kim, Jihee Seo, Do-Keun Kim, Seung-Hak Baek
INTRODUCTION: Our objective was to report a patient treated with 3-dimensional virtual-surgery simulation-assisted asymmetric bilateral mandibular distraction osteogenesis. METHODS: A boy (age, 9.5 years) had mandibular hypoplasia and facial asymmetry, induced by bilateral condylar fractures at 4 years of age. The asymmetric bilateral mandibular distraction osteogenesis was planned to correct facial asymmetry and mandibular hypoplasia. The 3-dimensional virtual-surgery simulation results were 11 mm of horizontal distraction on the right side and 4...
January 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28024773/comprehensive-treatment-approach-for-condylar-hyperplasia-and-mandibular-crowding-with-custom-lingual-braces-and-2-jaw-surgery
#18
Panagiotis G Kyteas, W Stuart McKenzie, Peter D Waite, Chung H Kau
We report on the successful treatment of a 32-year-old woman with condylar hyperplasia and severe mandibular crowding. In addition, her maxilla was canted to the right, her mandibular midline and chin point deviated to the left, and her maxillary canines were missing. The treatment plan included (1) aligning and leveling the teeth in both arches, (2) correcting overbite and overjet, (3) performing LeFort I osteotomy and bilateral split osteotomies, and (4) correcting the malocclusion postsurgically. The orthodontic treatment was performed with custom lingual braces and clear brackets, and virtual surgical planning techniques were used to plan the orthognathic surgery...
January 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28012844/maxillofacial-features-related-to-mandibular-asymmetries-in-skeletal-class-iii-patients
#19
Guilherme Thiesen, Bruno Frazão Gribel, Ki Beom Kim, Maria Perpétua Mota Freitas
PURPOSE: To analyze components related to different degrees of mandibular asymmetry in adults with skeletal Class III using cone-beam computed tomographic (CBCT) images. MATERIALS AND METHODS: CBCT images from 138 patients were analyzed. Asymmetry was determined by the deviation of the gnathion point in relation to the midsagittal plane and classified as relative symmetry, moderate mandibular asymmetry, or severe mandibular asymmetry. Several maxillary and mandibular measurements were used to compare different degrees of mandibular asymmetry and the difference between measurements of the contralateral and deviated sides...
December 3, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28011183/comparison-of-skeletal-stability-after-sagittal-split-ramus-osteotomy-among-mono-cortical-plate-fixation-bi-cortical-plate-fixation-and-hybrid-fixation-using-absorbable-plates-and-screws
#20
Koichiro Ueki, Akinori Moroi, Kunio Yoshizawa, Asami Hotta, Takamitsu Tsutsui, Kenichi Fukaya, Ryota Hiraide, Akihiro Takayama, Tatsuta Tsunoda, Yuki Saito
PURPOSE: The purpose of this study was to examine skeletal stability and plate breakage after sagittal split ramus osteotomy (SSRO) with the mono-cortical plate fixation, bi-cortical plate fixation, and hybrid fixation techniques using absorbable plates and screws. MATERIALS AND METHODS: A total of 76 Japanese patients diagnosed with mandibular prognathism with and without maxillary deformity were divided into 3 groups randomly. A total of 28 patients underwent SSRO with mono-cortical plate fixation, 23 underwent SSRO with bi-cortical plate fixation, and 25 underwent SSRO with hybrid fixation...
November 19, 2016: Journal of Cranio-maxillo-facial Surgery
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