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https://www.readbyqxmd.com/read/28719938/terminal-condylar-facets-of-the-femur-implications-for-knee-arthroplasty
#1
Sunita Athavale, Sheetal Kotgirwar, Rashmi Deopujari, Urmila Sinha, Soumitra Trivedi, Rekha Lalwani
No abstract text is available yet for this article.
July 18, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28717635/the-fabrication-of-a-customized-occlusal-splint-based-on-the-merging-of-dynamic-jaw-tracking-records-cone-beam-computed-tomography-and-cad-cam-digital-impression
#2
Katerina Aslanidou, Chung How Kau, Christos Vlachos, Tayem Abou Saleh
OBJECTIVES: The aim of this case report was to present the procedure of fabricating a customized occlusal splint, through a revolutionary software that combines cone beam computed tomography (CBCT) with jaw motion tracking (JMT) data and superimposes a digital impression. MATERIALS AND METHODS: The case report was conducted on a 46-year-old female patient diagnosed with the temporomandibular disorder. A CBCT scan and an optical impression were obtained. The range of the patient's mandibular movements was captured with a JMT device...
July 2017: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/28717284/is-the-mandibular-growth-affected-by-internal-rigid-fixation-a-systematic-review
#3
REVIEW
Humberto Fernández-Olarte, Andrés Gómez-Delgado, Dayan López-Dávila, Rodolfo Rangel-Perdomo, Gloria Inés Lafaurie, Leandro Chambrone
PURPOSE: The purpose of this systematic review was to evaluate, in animal model-based studies, whether there are mandibular growth alterations, after open reduction and internal rigid fixation with titanium plates and screws. METHODS: A literature search was conducted using the MEDLINE, EMBASE, and LILACS databases, up to and including August 2015. Surgical reduction and internal rigid fixation (IRF) of induced fractures were compared to non-invasive procedures, in order to investigate if there were alterations in the mandibular growth patterns...
September 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28711589/fixation-strength-of-a-polyetheretherketone-femoral-component-in-total-knee-arthroplasty
#4
Lennert de Ruiter, Dennis Janssen, Adam Briscoe, Nico Verdonschot
INTRODUCTION: Introducing polyetheretherketone (PEEK) polymer as a material for femoral components in total knee arthroplasty (TKA) could potentially lead to a reduction of the cemented fixation strength. A PEEK implant is more likely to deform under high loads, rendering geometrical locking features less effective. Fixation strength may be enhanced by adding more undercuts or specific surface treatments. The aim of this study is to measure the initial fixation strength and investigate the associated failure patterns of three different iterations of PEEK-OPTIMA(®) implants compared with a Cobalt-Chromium (CoCr) component...
July 12, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28708658/condyle-head-reimplantation-combined-with-vascularized-free-flap-for-mandibular-reconstruction
#5
Jun-Yi Zhu, Hai-Xiao Zou, Hui-Min Li, Wei Wang, Jun Jia
Due to the anatomic and functional complexity, reconstruction of the condylar process after mandibular tumor extirpation remains a surgical challenge. The aim of this study was to present the results and experience of condyle head reimplantation combined with vascularized free flap for mandibular reconstruction in our institution. In the current study, the authors evaluated the clinical features of condyle head reimplantation combined with vascularized free flap for mandibular reconstruction in 5 patients with benign mandibular intraosseous lesions from December 2013 to March 2015 in our institution...
July 13, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28708129/validation-of-a-novel-imaging-approach-using-multi-slice-ct-and-cone-beam-ct-to-follow-up-on-condylar-remodeling-after-bimaxillary-surgery
#6
Laura Ferreira Pinheiro Nicolielo, Jeroen Van Dessel, Eman Shaheen, Carolina Letelier, Marina Codari, Constantinus Politis, Ivo Lambrichts, Reinhilde Jacobs
The main goal of this study was to introduce a novel three-dimensional procedure to objectively quantify both inner and outer condylar remodelling on preoperative multi-slice computed tomography (MSCT) and postoperative cone-beam computed tomography (CBCT) images. Second, the reliability and accuracy of this condylar volume quantification method was assessed. The mandibles of 20 patients (11 female and 9 male) who underwent bimaxillary surgery were semi-automatically extracted from MSCT/CBCT scans and rendered in 3D...
July 14, 2017: International Journal of Oral Science
https://www.readbyqxmd.com/read/28703117/early-diagnostics-of-temporomandibular-joint-structural-elements-injures-caused-by-traumatic-mandibular-bone-fractures
#7
Kh R Pohranychna, A R Stasyshyn, U D Matolych
A rapidly increasing number of mandibular condylar fractures and some complications related to injuries of temporomandibular elements make this study important. Intra-articular disorders lead to secondary pathological findings such as osteoarthritis, deforming osteoarthrosis, and temporomandibular joint ankylosis that limits mouth opening, mastication, swallowing, breathing, and decreased/lost working capacity or disability. Early diagnosis of intra-articular disorders can prevent from long-lasting functional complications caused by temporomandibular joint injuries...
June 30, 2017: Polski Przeglad Chirurgiczny
https://www.readbyqxmd.com/read/28699681/occurrence-of-signs-of-osteoarthritis-arthrosis-in-the-temporomandibular-joint-on-panoramic-radiographs-in-swedish-women
#8
Karin Bäck, Margareta Ahlqwist, Magnus Hakeberg, Lars Dahlström
OBJECTIVES: To determine the prevalence and incidence of radiographic signs of osteoarthritis/osteoarthrosis (OA) in the temporomandibular joint (TMJ) among middle-aged and older women. METHODS: Data were collected from ongoing representative, longitudinal and repeated cross-sectional studies in Gothenburg, Sweden. Panoramic radiographs (PAN) have been taken regularly since 1968. The cohorts were systematically selected from the female population at the ages of 38, 50, 62 and 74...
July 12, 2017: Community Dentistry and Oral Epidemiology
https://www.readbyqxmd.com/read/28687489/fas-s1p1-crosstalk-via-nf-%C3%AE%C2%BAb-activation-in-osteoclasts-controls-subchondral-bone-remodeling-in-murine-tmj-arthritis
#9
Islamy Rahma Hutami, Takashi Izawa, Akiko Mino-Oka, Takehiro Shinohara, Hiroki Mori, Akihiko Iwasa, Eiji Tanaka
Enhanced turnover of subchondral trabecular bone is a hallmark of rheumatoid arthritis (RA) and it results from an imbalance between bone resorption and bone formation activities. To investigate the formation and activation of osteoclasts which mediate bone resorption, a Fas-deficient MRL/lpr mouse model which spontaneously develops autoimmune arthritis and exhibits decreased bone mass was studied. Various assays were performed on subchondral trabecular bone of the temporomandibular joint (TMJ) from MRL/lpr mice and MRL+/+ mice...
July 4, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28684303/is-oestrogen-associated-with-mandibular-condylar-resorption-a-systematic-review
#10
REVIEW
L F P Nicolielo, R Jacobs, E Ali Albdour, X Hoste, J Abeloos, C Politis, G Swennen
A systematic review of the literature was performed regarding the influence of oestrogen on the occurrence of mandibular condylar resorption. Search terms for oestrogen were used in combination with terms related to the effect on condylar remodelling. A search of the PubMed, Embase, and Cochrane Central Register of Controlled Trials databases yielded 419 articles published between October 1993 and March 2017. An additional 48 articles were retrieved through manual searching of the reference lists. After initial abstract selection, 94 eligible articles were screened in detail, resulting in a final number of 33 articles included in the review...
July 3, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28684071/three-dimensional-analysis-of-condylar-remodeling-and-skeletal-relapse-following-bimaxillary-surgery-a-2-year-follow-up-study
#11
Tong Xi, Rik van Luijn, Frank Baan, Ruud Schreurs, Martien de Koning, Stefaan Bergé, Thomas Maal
PURPOSE: To quantify the postoperative condylar remodelling and its role in skeletal relapse after bimaxillary surgery. MATERIALS AND METHODS: 50 patients with mandibular hypoplasia who underwent bimaxillary surgery were analyzed. CBCT scans were acquired preoperatively, one week postoperatively and two years postoperatively. 3D cephalometric analysis was carried out for each CBCT scan, after which the condylar volume analysis was performed. RESULTS: The maxilla was advanced by a mean of 2...
June 13, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28682861/right-femoral-pathological-fracture-caused-by-primary-bone-epithelioid-angiosarcoma-case-report
#12
Yatong Li, Xiongfei Zou, Xiaoyan Chang, Xiao Chang, Shengfang Sun, Baozhong Zhang
RATIONALE: Epithelioid angiosarcoma (EAS) is an extremely rare malignant disease, which accounts no more than 1% of all soft tissue sarcomas. In this article, we would report a new case of EAS with multiple bone destruction and right femoral pathological fracture, which was an even rarer manifestation of EAS. PATIENT CONCERNS: In this case, a 64-year-old man with right femoral fracture was reported. He had suffered from a progressive low back pain for about 8 months, and the imaging examinations prompted a multiple bone destruction in his vertebra and lower limbs...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28682540/-influence-on-indian-hedgehog-parathyroid-hormone-like-related-protein-pathway-induced-by-altered-masticatory-loading-in-the-condylar-cartilage-of-growing-rabbits
#13
Yan Fan, Feng Jianying, Liu Chenyan, Wang Pan, Sun Zhe, Shi Changjing
OBJECTIVE: To determine the influence of altered masticatory loading on Indian hedgehog (Ihh)-parathyroid hormone-like related protein (PThrP) pathway in the condylar cartilage of growing rabbits. METHODS: A total of 48 10-day-old rabbits were randomly divided into two groups and fed different kinds of food, such as solid diet and soft diet. The animals were sacrificed after 2, 4, 6, and 8 weeks. Difference of Ihh and PThrP expression levels induced by altered masticatory loading was tested by hematoxylin-eosin (HE), immunohistochemistry, Western blot, and real-time polymerase chain reaction (PCR)...
April 1, 2017: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28681087/erratum-to-an-in-vitro-analysis-of-medial-structures-and-a-medial-soft-tissue-reconstruction-in-a-constrained-condylar-total-knee-arthroplasty
#14
Kiron K Athwal, Hadi El Daou, Eivind Inderhaug, William Manning, Andrew J Davies, David J Deehan, Andrew A Amis
No abstract text is available yet for this article.
July 5, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28678124/an-in-vivo-simulation-of-isometry-of-the-anterolateral-aspect-of-the-healthy-knee
#15
Willem A Kernkamp, Samuel K Van de Velde, Tsung-Yuan Tsai, Ewoud R A van Arkel, Peter D Asnis, Rob G H H Nelissen, Robert F LaPrade, Bertram Zarins, Guoan Li
BACKGROUND: To assess the isometry of theoretical lateral extra-articular reconstruction (LER), we evaluated theoretical grafts attached to various points on the lateral femoral condylar area and to either Gerdy's tubercle or the anatomic attachment site of the anterolateral ligament to the tibia. METHODS: In 18 subjects, healthy knees with no history of either injury or surgery involving the lower extremity were studied. The subjects performed a sit-to-stand motion (from approximately 90° of flexion to full extension), and each knee was studied using magnetic resonance and dual fluoroscopic imaging techniques...
July 5, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28671284/mandibular-condylar-hypoplasia-in-children-with-isolated-unilateral-congenital-aural-atresia
#16
Tyler R Halle, N Wendell Todd, Bruno P Soares
OBJECTIVES/HYPOTHESIS: We hypothesized that children with isolated nonsyndromic unilateral congenital aural atresia have subclinical mandibular condylar hypoplasia ipsilateral to the atretic ear, and that the Jahrsdoerfer score is associated with the degree of condylar hypoplasia. STUDY DESIGN: Retrospective self-controlled case series. METHODS: We reviewed high-resolution computed tomography scans of the temporal bones of 68 children with isolated nonsyndromic unilateral congenital aural atresia...
July 3, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28664261/the-fibular-head-projection-is-of-limited-use-as-a-radiographic-landmark-in-preoperative-planning-of-total-knee-arthroplasty
#17
Doerte Matziolis, Marius Meiser, Norbert Sieber, Ulf Teichgräber, Georg Matziolis
INTRODUCTION: The projection of the fibular head is recommended as a quality indicator of a correct radiographic projection. However, this landmark has yet to be sufficiently validated. METHODS: The MRIs of 334 knee joints were included. On the MRIs, the distance between the FH and lateral tibial cortical bone was simulated in projections parallel to surgically relevant axes. Then, the Pearson correlation coefficient between the distance of the FH to the lateral tibial cortical bone and the projection plane causing this was determined...
June 29, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28652978/occipital-condylar-dysplasia-in-a-jacob-lamb-ovis-aries
#18
Alison M Lee, Nicola F Fletcher, Conor Rowan, And Hanne Jahns
Jacob sheep (Ovis aries) are a pedigree breed known for their "polycerate" (multihorned) phenotype. We describe a four-horned Jacob lamb that exhibited progressive congenital hindlimb ataxia and paresis, and was euthanased four weeks post-partum. Necropsy and CT-scan revealed deformity and asymmetry of the occipital condyles, causing narrowing of the foramen magnum and spinal cord compression. Histopathology demonstrated Wallerian degeneration of the cervical spinal cord at the level of the foramen magnum. These findings are consistent with occipital condylar dysplasia...
2017: Open veterinary journal
https://www.readbyqxmd.com/read/28647646/the-secreted-protein-wnt5a-regulates-condylar-chondrocyte-proliferation-hypertrophy-and-migration
#19
Xianpeng Ge, Ruirui Shi, Xuchen Ma
OBJECTIVE: Our previous study showed that WNT5A, a member of the noncanonical WNT pathway, is involved in interleukin-1beta induced matrix metalloproteinase expression in temporomandibular joint (TMJ) condylar chondrocytes. The purpose of this study is to further explore the roles of WNT5A in cartilage biology of the TMJ. METHODS: An early TMJ osteoarthritis-like rat model was constructed by a mechanical method (steady mouth-opening). The gene and protein levels of WNT5A during the condylar cartilage changes were measured...
June 16, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28643917/estrogen-receptor-alpha-mediates-mandibular-condylar-cartilage-growth-in-male-mice
#20
J L Robinson, V Gupta, P Soria, E Clanaman, S Gurbarg, M Xu, J Chen, S Wadhwa
OBJECTIVES: In the appendicular skeleton, estrogen via ERα signalling has been shown to mediate endochondral growth plate fusion in both males and females. However, the role of ERα in mediating growth of the mandibular condylar cartilage is unknown. Thus, this study focuses on the characterization of the mandibular condylar cartilage phenotype in young and adult male ERαKO mice. SETTING: Columbia University Medical Center. MATERIAL AND METHODS: WT and ERαKO C57BL/6 male mice were sacrificed at 49 days or 9 months for phenotypic analysis...
June 2017: Orthodontics & Craniofacial Research
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