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https://www.readbyqxmd.com/read/28538289/a-three-dimensional-analysis-of-the-fracture-planes-in-pediatric-lateral-humeral-condyle-fractures-for-image-based-pin-positioning-during-fixation
#1
Do Young Park, Jae Ho Cho, Doo-Hyung Lee, Wan-Sun Choi, Jun Young Bang, Xiang Yun Yin
OBJECTIVE: To determine the 3 dimensional morphology of pediatric lateral condylar physeal fractures using 3-dimensional computed tomography (3D-CT) and to identify optimal pin positions for percutaneous pinning. DESIGN: Prospective case series of consecutively treated patients SETTING:: Tertiary university hospital setting. PATIENTS: Preoperative 3D-CTs in pediatric surgical candidates diagnosed with lateral condylar physeal fractures INTERVENTION:: Closed reduction and percutaneous pinning was performed...
May 17, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28538068/clinical-and-cephalometric-analysis-of-facial-soft-tissue
#2
Jeseok Oh, Jeong Joon Han, Sun-Youl Ryu, Hee-Kyun Oh, Min-Suk Kook, Seunggon Jung, Hong-Ju Park
OBJECTIVE: This study aimed to provide average of standard values in planning orthognathic surgery in Asians. MATERIALS AND METHODS: Thirty-three Asians with well-balanced facial profile, combined with class I occlusion and stabilized condylar head were evaluated using lateral cephalograms. RESULTS: Facial length (Nasion'-Menton') was 138.8 and 127.0 mm in male and female, respectively. Upper and lower lip length were 24.5 and 49.8 mm for male, and 22...
May 19, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28530843/cone-beam-computed-tomography-evaluation-on-the-condylar-displacement-following-sagittal-split-ramus-osteotomy-in-asymmetric-setback-patients-comparison-between-conventional-approach-and-surgery-first-approach
#3
Min-Hee Oh, Hyeon-Shik Hwang, Kyung-Min Lee, Jin-Hyoung Cho
OBJECTIVE: To compare the condylar displacement following sagittal split ramus osteotomy (SSRO) in asymmetric setback patients between the conventional approach and surgery-first approach and to determine whether the condylar displacement is affected by asymmetric setback in SSRO patients. MATERIALS AND METHODS: This was a retrospective study. The subjects consisted of patients with facial asymmetry who underwent SSRO and had cone-beam computed tomography taken before and 1 month after surgery...
May 22, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28530471/structure-function-relationships-of-temporomandibular-retrodiscal-tissue
#4
M C Coombs, J M Petersen, G J Wright, S H Lu, B J Damon, H Yao
It is estimated that 2% to 4% of the US population will seek treatment for temporomandibular joint (TMJ) symptoms, typically occurring with anterior disc displacement. The temporomandibular retrodiscal tissue (RDT) has been postulated to restrict pathologic disc displacement. To elucidate RDT function, understanding regional RDT biomechanics and ultrastructure is required. No prior biomechanical analysis has determined regional variations in RDT properties or associated biomechanical outcomes with regional variations in collagen and elastin organization...
June 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28521354/surgical-microanatomy-of-the-posterior-condylar-emissary-vein-and-its-anatomical-variations-for-the-transcondylar-fossa-approach
#5
Nakao Ota, Rokuya Tanikawa, Tsutomu Yoshikane, Masataka Miyama, Takanori Miyazaki, Yu Kinoshita, Hidetoshi Matsukawa, Takeshi Yanagisawa, Fumihiro Sakakibara, Go Suzuki, Norihiro Saito, Shiro Miyata, Kosumo Noda, Toshiyuki Tsuboi, Rihei Takeda, Hiroyasu Kamiyama, Sadahisa Tokuda, Kyousuke Kamada
BACKGROUND: It is essential to identify and be aware of the anatomy of the posterior condylar emissary vein (PCEV) for achieving an adequate operative field for the transcondylar fossa approach (TCFA). OBJECTIVE: To describe the variations in the drainage patterns of PCEVs and the technical issues encountered in such cases. METHODS: This was a retrospective analysis of the anatomy of PCEVs in 104 sides in 52 cases treated by the TCFA. Preoperative findings of multidetector-row computed tomography (CT) and CT venography (CTV) were compared with the intraoperative findings...
June 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28511466/management-of-cubitus-varus-deformity-in-children-by-closed-dome-osteotomy
#6
Partap Singh Verka, Ujjwal Kejariwal, Bijendra Singh
INTRODUCTION: Supracondylar fractures are the most common elbow injuries in skeletally immature children between 5-10 years of age and cubitus varus deformity is the most common late complication. Cubitus varus or bow elbow or gunstock deformity is the result of malunion occurring as a complication of supracondylar fracture of the humerus. Various type of corrective osteotomies are used of which lateral closed wedge French osteotomy is commomly used which has its own complications like lateral condylar prominence, unsightful scar and limitation of movement...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28499396/averaging-rotational-landmarks-during-total-knee-arthroplasty-reduces-component-malrotation-caused-by-femoral-asymmetry
#7
Tat Woon Chao, Liam Geraghty, Pandelis Dimitriou, Simon Talbot
BACKGROUND: Femoral component malrotation is a common cause of patient dissatisfaction after total knee arthroplasty. The sulcus line (SL) is more accurate than Whiteside's line as it corrects for variation in the coronal orientation of the groove. The hypothesis is that averaging the SL and posterior condylar axis (PCA) will reduce femoral malrotation. METHODS: The component was inserted at a position between the SL and PCA in 91 patients. An intraoperative photograph was taken showing the landmarks...
May 12, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28497104/stress-fracture-of-the-lateral-femoral-condyle-after-total-knee-arthroplasty
#8
Mohammad M Sarzaeem, Mahmood Jabalameli
BACKGROUND: This is to assess one of the rare complications after total knee replacement and to assess risk factors of failure. METHODS: 11 patients with varus knee and an average age of 67 years underwent TKA between 2005 and 2013. All patients returned with a sudden sharp knee pain, disability to walk and significant decrease in ROM about 4 to 8 weeks after surgery. Radiographic examination revealed a lateral femoral condylar stress fracture. RESULTS: After analyzing the images, we found common characteristics among all patients, which might be attributable to the later fracture including varus deformity>25, femoral component lateralization, and valgus correction...
March 2017: Archives of Bone and Joint Surgery
https://www.readbyqxmd.com/read/28487778/cl-ii-malocclusion-treatment-using-the-modified-twin-block-appliance-coordinated-with-fixed-orthodontics-in-a-postmenarche-patient
#9
Amin Aminian, Shahriar Sarvareh Azimzadeh, Elina Rahmanian
Functional appliances have been used for treatment of Class II patients for a long time. The main objective of therapy with functional appliances is to induce supplementary lengthening of the mandible by stimulating increased growth at the condylar cartilage. The Twin Block appliance is one of the most commonly used functional appliances. The aim of this paper is to present a case report of mandibular deficiency treatment with Twin Block appliance in a female patient whose sexual maturation (one and a half years after menarche) and cervical vertebral maturation stage indicated the end of the growth peak...
2017: Case Reports in Dentistry
https://www.readbyqxmd.com/read/28480084/concomitant-central-giant-cell-granuloma-and-aneurysmal-bone-cyst-in-a-young-child
#10
Deepika Pai, Abhay Taranath Kamath, Adarsh Kudva, Monica Monica Charlotte Solomon, Saurabh Kumar, Prem Sasikumar
Although Central Giant Cell Granuloma (CGCG) is a benign tumor of the jaw and aneurysmal bone cyst seen in children, its aggressive behavior causes extensive loss of hard tissue requiring wide excision and extensive rehabilitation. We report a rare case of concomitant CGCG and aneurysmal bone cyst in a two-year-old male child, involving the coronoid and condylar process. Young age, large tumor, its aggressive nature, and future growth of orofacial region pose a significant challenge in the management of such conditions...
2017: Case Reports in Dentistry
https://www.readbyqxmd.com/read/28476093/association-of-condylar-bone-quality-with-tmj-osteoarthritis
#11
J Shi, S Lee, H C Pan, A Mohammad, A Lin, W Guo, E Chen, A Ahn, J Li, K Ting, J H Kwak
The etiology and treatment of temporomandibular joint (TMJ) osteoarthritis (TMJOA) remain complex and unclear. Based on clinical observations, we hypothesized that low condylar bone quality is significantly correlated with TMJOA and explored this association in a cross-sectional study with human patients. A total of 254 postmenopausal female participants were included in this study. Radiographic findings from cone beam computed tomography (CBCT) and clinical symptoms were used to classify each TMJ data sample as healthy control ( n = 124) or TMJOA ( n = 130)...
May 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28473964/t1%C3%AF-t2-mapping-and-histopathology-of-degenerative-cartilage-in-advanced-knee-osteoarthritis
#12
Benjamin S Kester, Philip M Carpenter, Hon J Yu, Taiki Nozaki, Yasuhito Kaneko, Hiroshi Yoshioka, Ran Schwarzkopf
AIM: To investigate whether normal thickness cartilage in osteoarthritic knees demonstrate depletion of proteoglycan or collagen content compared to healthy knees. METHODS: Magnetic resonance (MR) images were acquired from 5 subjects scheduled for total knee arthroplasty (TKA) (mean age 70 years) and 20 young healthy control subjects without knee pain (mean age 28.9 years). MR images of T1ρ mapping, T2 mapping, and fat suppressed proton-density weighted sequences were obtained...
April 18, 2017: World Journal of Orthopedics
https://www.readbyqxmd.com/read/28468225/open-reduction-in-pediatric-condylar-fracture
#13
Alexandre Agostini Barbosa, Ronaldo Célio Mariano
Facial fractures in children are rare. Lack of pneumatization, fat pockets, mixed dentition, contribute to the elasticity and bone stability. When mandibular fractures occur in children, most often involve the condyle by indirect trauma. Such fractures are the center of discussion on the form of treatment if this should be performed conservatively, or held the reduction and fixation of the fracture with surgical exposure of the fragments. In condylar fractures in children, in most patients, the proposed treatment is closed reduction...
May 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28468148/a-morphological-classification-scheme-for-the-mandibular-hypoplasia-in-treacher-collins-syndrome
#14
Cassandra A Ligh, Jordan Swanson, Jason W Yu, Fares Samra, Scott P Bartlett, Jesse A Taylor
BACKGROUND: Mandibular hypoplasia is a hallmark of Treacher Collins syndrome (TCS), and its severity accounts for significant functional morbidity. The purpose of this study is to develop a mandibular classification scheme. METHODS: A classification scheme was designed based on three-dimensional computed tomography (3D-CT) scans to assess 3 characteristic features: degree of condylar hypoplasia, mandibular plane angle (condylion-gonion-menton), and degree of retrognathia (sella-nasion-B point angle)...
May 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28464946/evaluating-the-biomechanical-effects-of-implant-diameter-in-case-of-facial-trauma-to-an-edentulous-atrophic-mandible-a-3d-finite-element-analysis
#15
Aysa Ayali, Kani Bilginaylar
BACKGROUND: Rehabilitation using an implant supported overdenture with two implants inserted in the interforaminal region is the easiest and currently accepted treatment modality to increase prosthetic stabilization and patient satisfaction in edentulous patients. The insertion of implants to the weakend mandibular bone decreases the strength of the bone and may lead to fractures either during or after implant placement. The aim of this three dimensional finite element analysis (3D FEA) study was to evaluate the biomechanical effects of implant diameter in case of facial trauma (2000 N) to an edentulous atrophic mandible with two implant supported overdenture...
May 2, 2017: Head & Face Medicine
https://www.readbyqxmd.com/read/28462782/regeneration-of-subcutaneous-tissue-engineered-mandibular-condyle-in-nude-mice
#16
Feiyu Wang, Yihui Hu, Dongmei He, Guangdong Zhou, Xiujuan Yang, Edward Ellis
PURPOSE: To explore the feasibility of regenerating mandibular condyles based on cartilage cell sheet with cell bone-phase scaffold compared with cell-biphasic scaffolds. MATERIALS AND METHODS: Tissue-engineered mandibular condyles were regenerated by the following: 1) cartilage cell sheet + bone-phase scaffold (PCL/HA) seeded with bone marrow stem cells (BMSCs) from minipigs (cell sheet group), and 2) cartilage phase scaffold (PGA/PLA) seeded with auricular chondrocytes + bone-phase scaffold seeded with BMSCs from minipigs (biphasic scaffold group)...
April 4, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28462215/condylar-constrained-system-in-primary-total-knee-replacement-our-experience-and-literature-review
#17
Luigi Sabatini, Salvatore Risitano, Lorenzo Rissolio, Andrea Bonani, Francesco Atzori, Alessandro Massè
BACKGROUND: Constrained condylar knee (CCK) prosthesis are common used for revision surgery but can also help surgeons to improve implant stability in primary knee arthroplasty, in fact in severe knee arthrosis with serious deformity associated with a significant instability a more constrained articulation is required. With introduction of second generation of semi-constrained prosthesis, rate of complication is real decreased and a good survival rate and functional score results is showed...
March 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28462182/evaluation-of-temporomandibular-disorders-before-and-after-orthognathic-surgery-therapeutic-considerations-on-a-sample-of-76-patients
#18
Carlo di Paolo, Giorgio Pompa, Paolo Arangio, Anna di Nunno, Stefano Di Carlo, Daniele Rosella, Piero Papi, Piero Cascone
OBJECTIVES: Temporomandibular disorders may be associated with dental and facial malformations. The aim of this study is to record the prevalence of TMDs in patients scheduled for orthognathic surgery, reporting the development of TMDs and symptoms during the entire period of the treatment, and demonstrating the benefits of a team effort on this population. MATERIALS AND METHODS: Assessment of temporomandibular status was performed using the RDC/TMD criteria at T0 (prior to orthodontic therapy), T1 (3 months after the surgery), and T2 post-therapeutic cycle (6 to 12 months postoperatively)...
March 2017: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/28460873/long-term-therapeutic-effects-of-dextrose-prolotherapy-in-patients-with-hypermobility-of-the-temporomandibular-joint-a-single-arm-study-with-1-4-years-follow-up
#19
H Refai
The aim was to analyse the short-term and long-term therapeutic efficacy of dextrose prolotherapy for dislocation or subluxation (hypermobility) of the temporomandibular joint (TMJ). Sixty-one patients with symptomatic hypermobility of the TMJ were included in this single-arm prospective study, in which they were each given four sessions of intra-articular and pericapsular injections six weeks apart. Each injection comprised 10% dextrose/mepivacaine solution 3ml. Clinical outcomes including severity of pain on movement according to the numerical rating scale (NRS), maximal interincisal opening, clicking, and frequency of locking were measured before treatment (T1), during treatment (T2) (just before the third session of injections), at the short-term follow-up (T3) (three months after treatment), and at the long-term follow-up (T4) (1-4 years after treatment)...
April 28, 2017: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/28460872/fixation-of-fractures-of-the-condylar-head-of-the-mandible-with-a-new-magnesium-alloy-biodegradable-cannulated-headless-bone-screw
#20
H Leonhardt, A Franke, N M H McLeod, G Lauer, A Nowak
It is difficult to fix fractures of the condylar head of the mandible. Several techniques have been described which show satisfactory outcomes, but stability can be questionable, and some can cause irritation of the soft tissues. We describe a technique and first results of treating such fractures with resorbable magnesium-based headless bone screws (Magnezix(®) 2.7mm CS; Syntellix AG, Hanover, Germany).
April 28, 2017: British Journal of Oral & Maxillofacial Surgery
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