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https://www.readbyqxmd.com/read/29339001/does-the-surgical-approach-for-treating-mandibular-condylar-fractures-affect-the-rate-of-seventh-cranial-nerve-injuries-a-systematic-review-and-meta-analysis-based-on-a-new-classification-for-surgical-approaches
#1
Essam Ahmed Al-Moraissi, Aurélien Louvrier, Giacomo Colletti, Larry M Wolford, Federico Biglioli, Marwa Ragaey, Christophe Meyer, Edward Ellis
PURPOSE: The purpose of this study was to determine the rate of facial nerve injury (FNI) when performing (ORIF) of mandibular condylar fractures by different surgical approaches. MATERIALS AND METHODS: A systematic review and meta-analysis were performed that included several databases with specific keywords, a reference search, and a manual search for suitable articles. The inclusion criteria were all clinical trials, with the aim of assessing the rate of facial nerve injuries when (ORIF) of mandibular condylar fractures was performed using different surgical approaches...
November 14, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29333780/-progress-in-exogenous-factors-affecting-the-growth-and-remodeling-of-condylar-process
#2
Peng Qiuping, Wu Jun
Condyle is a critical growth region of the mandible where mandible by endochondral ossification occurs. Condylar cartilage belongs to the secondary cartilage, which is not only affected by genetic factors but also by stress, drug intake, and other local factors. To promote the growth of the mandible, various exogenous and local factors were used to alter the biological environment of the condylar cartilage to stimulate endochondral ossification. This article reviews studies on the influence of exogenous factors on condylar growth and reconstruction...
December 1, 2017: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/29330345/a-computational-simulation-study-to-determine-the-biomechanical-influence-of-posterior-condylar-offset-and-tibial-slope-in-cruciate-retaining-total-knee-arthroplasty
#3
K-T Kang, Y-G Koh, J Son, O-R Kwon, J-S Lee, S K Kwon
OBJECTIVES: Posterior condylar offset (PCO) and posterior tibial slope (PTS) are critical factors in total knee arthroplasty (TKA). A computational simulation was performed to evaluate the biomechanical effect of PCO and PTS on cruciate retaining TKA. METHODS: We generated a subject-specific computational model followed by the development of ± 1 mm, ± 2 mm and ± 3 mm PCO models in the posterior direction, and -3°, 0°, 3° and 6° PTS models with each of the PCO models...
January 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/29327558/-modified-osteotomy-of-olecranon-for-the-management-of-inter-condylar-fracture-of-the-humerus
#4
Zheng-Feng Mei, Wen-Tao Lei, Dong-Hui Huang, Qi-Hui Zhao, Hang-Bo Qu, Lian-Zhi Ni
OBJECTIVE: To explore the surgical method and clinical outcome of modified osteotomy of olecranon for the treatment of inter-condylar fracture of humerus. METHODS: From May 2007 to December 2012, 32 patients of intercondylar fracture of humerus were treated surgically through the approach of modified osteotomy of olecranon. The patients were 21 males and 11 females with a mean age of 46.3 years (ranged 18 to 65 years). Nineteen fractures occurred on the right extremity and 13 on the left extremity...
January 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29327231/loading-of-the-condylar-cartilage-can-rescue-the-effects-of-botox-on-tmj
#5
Eliane H Dutra, Mara H O'Brien, Candice Logan, Aditya Tadinada, Ravindra Nanda, Sumit Yadav
The purpose of this study is to evaluate whether the effects of botulinum neurotoxin (botox) injection into the masseter in the mandibular condylar cartilage (MCC) and subchondral bone could be rescued by compressive loading of the temporomandibular joint (TMJ). Twenty-four 6-week-old female mice (C57BL/6J) were used. Mice were divided in three groups: (1) Botox (n = 8); (2) Botox plus loading (n = 8); (3) Pure control (n = 8). Bone labels (3 and 1 day before sacrifice) and the proliferation marker EdU (2 and 1 day before sacrifice) were intraperitoneally injected into all groups of mice...
January 11, 2018: Calcified Tissue International
https://www.readbyqxmd.com/read/29325834/a-computed-tomography-scan-based-template-to-place-the-femoral-component-in-accurate-rotation-with-respect-to-the-surgical-epicondylar-axis-in-total-knee-arthroplasty
#6
Yasushi Oshima, Norishige Iizawa, Tatsunori Kataoka, Tokifumi Majima, Shinro Takai
BACKGROUND: Femoral rotational alignment is considered an essential factor for total knee arthroplasty because malrotation of femoral components results in poor outcomes. To obtain proper alignment, we developed a superimposable computed tomography (CT) scan-based template to intraoperatively determine the accurate surgical epicondylar axis (SEA), and evaluated the effectiveness of this CT template. METHODS: In the experimental group (n=55), three serial slices of CT images, including medial and lateral epicondyles, were merged into a single image, and SEA was overlaid...
January 9, 2018: Knee
https://www.readbyqxmd.com/read/29311022/three-dimensional-titanium-miniplates-for-fixation-of-subcondylar-mandibular-fractures-comparison-of-five-designs-using-patient-specific-finite-element-analysis
#7
Mhd Hassan Albogha, Yoshihide Mori, Ichiro Takahashi
PURPOSE: The purpose of the current study is to compare the performance of five designs of three-dimensional titanium miniplates (lambda, strut, delta, rhombic and trapezoid) for fixation of subcondylar mandibular fracture. MATERIALS AND METHODS: Three-dimensional models were constructed for the five miniplates with their screws and integrated into a virtually fractured mandible that was derived from a computed tomographic image of living human. Patient-specific finite element models were analyzed to compare the performances of the miniplates...
December 26, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29310844/modification-of-the-measurement-of-the-major-variables-in-mandibular-condylar-fractures-angulation-of-sidewards-displacement-and-shortening-of-the-height-of-the-ramus
#8
S P Chang, Y Yang, L Q Shi, Y W Liu, Y Liu, Q Ma
Our aim was to improve the accuracy of measurement of the angulation and the shortening of the height of the ramus in fractures of the mandibular condyle using modified methods. We analysed spiral computed tomography (CT) of 67 unilateral fractures with the OsiriX v 5.0 (©Pixmeo Sarl) and Mimics 19.0 (©2016 Materialise NV, Belgium) and analysed them with SPSS (version 24.0, IBM® SPSS®). Angulation was measured using both the traditional method and our modified method. The results showed significant difference (p = 0...
January 5, 2018: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/29305289/prediction-models-to-improve-the-diagnostic-value-of-plain-radiographs-in-children-with-complete-discoid-lateral-meniscus
#9
Yong-Beom Park, Chul-Won Ha, Jae Won Jang, Manyoung Kim, Han-Jun Lee, Yong-Geun Park
PURPOSE: To develop prediction models to improve the diagnostic utility of plain radiographs for the diagnosis of complete discoid lateral meniscus by combining previously reported radiographic findings. METHODS: Patients ages 5 to 16 years with complete discoid lateral meniscus confirmed by arthroscopy or magnetic resonance imaging were included. Patients with insufficient radiographs were excluded. Normal control subjects were randomly sampled by age and sex matching...
January 2, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29304328/use-of-intraoperative-computed-tomography-in-craniomaxillofacial-trauma-surgery
#10
Karl Cuddy, Baber Khatib, R Bryan Bell, Allen Cheng, Ashish Patel, Melissa Amundson, Eric J Dierks
PURPOSE: The use of technology to aid in assessment, planning, and management of complex craniomaxillofacial injuries is increasingly common. Preoperative computed tomography (CT) evaluation is considered the standard of care, and intraoperative imaging is becoming increasingly accessible. Limited data exist regarding the implication of intraoperative CT on decision making in the management of all sites of facial fractures. The purposes of this study were to characterize the use of an intraoperative CT scanner for craniomaxillofacial surgery within our institution, to quantify the effect of intraoperative CT on surgical decision making, and to attempt to provide guidance on when to use this technology...
December 13, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29303858/surgical-treatment-of-synovial-chondromatosis-in-the-inferior-compartment-of-the-temporomandibular-joint-with-articular-disc-involvement
#11
Pablo Cornelius Comelli Leite, Elen de Souza Tolentino, Amanda Lury Yamashita, Lilian Cristina Vessoni Iwaki, Liogi Iwaki Filho
The authors report an unusual case of painful synovial chondromatosis originated in the inferior compartment of the temporomandibular joint (TMJ) with articular disc involvement in a 56-year-old woman with complaint of severe pain in the right preauricular region. Magnetic resonance images showed advanced destruction of the right articular disc anteriorly displaced, condylar erosion, and distinct nodules within an extremely expanded inferior joint compartment with large amount of fluid, as well as a large TMJ effusion...
January 4, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29303139/temporomandibular-joint-involvement-in-psoriatic-arthritis
#12
Alime Okkesim, Mehmet Zahit Adisen, Melda Misirlioglu
Psoriasis is a chronic, papulosquamous, and an inflammatory skin disease. It has been found that between 5% and 24% of patients develop psoriatic arthritis (PA) at the same time after or even prior to skin findings. The involvement of temporomandibular joint (TMJ) is a rare condition. In this report, a-46-year-old male patient was referred to our clinic with the complaint of pain in the bilateral TMJs, and a limited jaw movement. Medical anamnesis revealed he had psoriasis for the last 21 years, and developed a seronegative polyarthritis with destructive changes for 8 years...
November 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/29302780/effects-of-posterior-condylar-osteophytes-on-gap-balancing-in-computer-assisted-total-knee-arthroplasty-with-posterior-cruciate-ligament-sacrifice
#13
Pornpavit Sriphirom, Chaiyaporn Siramanakul, Boonyawat Chanopas, Sirisuk Boonruksa
OBJECTIVE: Gap planning in navigated total knee arthroplasty (TKA) is a critical concern. Osteophytes are normally removed prior to gap planning, with the exception of posterior condylar osteophytes of the femur, which are removed after posterior condylar resection. This study investigated how posterior condylar osteophytes affect gap balancing during surgery. METHODS: This prospective study was conducted on 40 primary varus osteoarthritic knees with a posterior condylar osteophyte that underwent TKA navigation...
January 4, 2018: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/29298566/osteochondral-interface-stiffening-in-mandibular-condylar-osteoarthritis
#14
J Zhang, L Liao, J Zhu, X Wan, M Xie, H Zhang, M Zhang, L Lu, H Yang, D Jing, X Liu, S Yu, X L Lu, C Chen, Z Shan, M Wang
Osteoarthritis (OA) of the temporomandibular joint (TMJ) is associated with dental biomechanics. A major change during OA progression is the ossification of the osteochondral interface. This study investigated the formation, radiological detectability, and mechanical property of the osteochondral interface at an early stage, the pathogenesis significance of which in OA progression is of clinical interest and remains elusive for the TMJ. Unilateral anterior crossbite (UAC) was performed on 6-wk-old rats as we previously reported...
December 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/29283940/evaluation-of-intersegmental-displacement-after-mandibular-setback-split-ramus-osteotomy-using-modified-l-shaped-monocortical-plate-cone-beam-computed-tomography-superimposition
#15
Dae Seok Hwang, Hyeong Geun Lee, Sang Hun Shin, Uk Kyu Kim
PURPOSE: The purpose of the current study is to compare intersegmental displacements after mandibular setback sagittal split ramus osteotomy (SSRO) using 4 types of osteosynthesis methods. PATIENTS AND METHODS: This is a retrospective study of 53 subjects who presented underwent bilateral setback SSRO at Pusan National University Hospital from January 2009 to December 2013. The subjects were divided into 4 groups according to the osteosynthesis method applied: group A-modified L-type monocortical plate; B-conventional miniplate; group C-bicortical screws; group D-metal and absorbable screws...
December 27, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29279738/computed-tomography-based-occipital-condyle-morphometry-in-an-indian-population-to-assess-the-feasibility-of-condylar-screws-for-occipitocervical-fusion
#16
Abhishek Srivastava, Geetanjali Nanda, Rajat Mahajan, Ankur Nanda, Nirajana Mishra, Srinivasa Karmaran, Sahil Batra, Harvinder Singh Chhabra
Study Design: A retrospective computed tomography (CT)-based morphometric study of 82 occipital condyles in the Indian population, focusing on critical morphometric dimensions with relation to placing condylar screws. Purpose: This study focused on determining the feasibility of placing occipital condylar screws in an Indian population using CT anatomical morphometric data. Overview of Literature: The occipital condylar screw is a novel technique being explored as one of the options in occipitocervical stabilization...
December 2017: Asian Spine Journal
https://www.readbyqxmd.com/read/29276123/prospective-randomized-comparison-of-posterior-stabilized-versus-condylar-stabilized-total-knee-arthroplasty-final-report-of-a-five-year-study
#17
David F Scott
BACKGROUND: This report presents the minimum 5-year results of a prospective, randomized, Level of Evidence I study that evaluated cruciate-sacrificing total knee arthroplasty using either a posterior-stabilized (PS) device or a condylar-stabilized (CS) device. We hypothesized that the clinical outcomes of both groups would be equivalent and that there would be differences in operative time and/or blood loss parameters. METHODS: One-hundred eleven patients undergoing total knee arthroplasty were randomized to receive either a post-cam style tibial insert (PS, n = 56) or a more congruent anterior-lipped tibial insert (CS, n = 55)...
December 7, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29275154/three-dimensional-growth-pattern-of-the-rat-mandible-revealed-by-periodic-live-micro-computed-tomography
#18
Hak-Jin Kim, Kyeong-Mee Park, Hye-Jin Tak, Ji Wook Choi, Sang-Hoon Kang, Wonse Park, Sang-Hwy Lee
OBJECTIVE: We wanted to evaluate the three-dimensional (3D) mandibular growth of Sprague-Dawley rats from 4th to 16th postnatal weeks with periodic and live micro-computed tomographic scanning. DESIGN: Twenty Sprague-Dawley rats were used for micro-CT scanning from 4th to 16th postnatal weeks. After 3D reconstruction of rat mandible, we performed the linear and angular measurements and the superimposition of the 3D models to evaluate the mandibular growth of rat...
December 16, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/29275153/mechanical-stiffness-of-tmj-condylar-cartilage-increases-after-artificial-aging-by-ribose
#19
Fereshteh Mirahmadi, Jan Harm Koolstra, Frank Lobbezoo, G Harry van Lenthe, Samaneh Ghazanfari, Jessica Snabel, Reinout Stoop, Vincent Everts
OBJECTIVE: Aging is accompanied by a series of changes in mature tissues that influence their properties and functions. Collagen, as one of the main extracellular components of cartilage, becomes highly crosslinked during aging. In this study, the aim was to examine whether a correlation exists between collagen crosslinking induced by artificial aging and mechanical properties of the temporomandibular joint (TMJ) condyle. To evaluate this hypothesis, collagen crosslinks were induced using ribose incubation...
December 16, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/29275075/accuracy-of-computer-assisted-orthognathic-surgery
#20
Giacomo De Riu, Paola Ilaria Virdis, Silvio Mario Meloni, Aurea Lumbau, Luigi Angelo Vaira
INTRODUCTION: The purpose of this study was to retrospectively evaluate the difference between the planned and the actual movements of the jaws, using three-dimensional (3D) software for PC-assisted orthognathic surgery, to establish the accuracy of the procedure. MATERIAL AND METHODS: A retrospective study was performed with 49 patients who had undergone PC-guided bimaxillary surgery. The accuracy of the protocol was determined by comparing planned movements of the jaws with the actual surgical movements, analysing frontal and lateral cephalometries...
December 5, 2017: Journal of Cranio-maxillo-facial Surgery
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