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https://www.readbyqxmd.com/read/29352690/diagnostic-utility-of-histological-analysis-for-detecting-ongoing-infection-during-two-stage-revision-arthroplasty-in-patients-with-inflammatory-arthritis
#1
Jaiben George, Yaxia Zhang, Michael Jawad, Mhamad Faour, Alison K Klika, Thomas W Bauer, Carlos A Higuera
BACKGROUND: Surgeons often rely on intra-operative histology (frozen sections [FS]) to determine the next step in surgical management during the second stage (re-implantation surgery) of 2-stage revision arthroplasty. The purpose of the study is to assess the accuracy of permanent sections (PS) and FS in the diagnosis of persistent infection during re-implantation in patients with an inflammatory arthritis. METHODS: From 2001 to 2016, 47 planned second-stage revision total hip arthroplasty and total knee arthroplasty in patients with inflammatory arthritis were identified...
December 29, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29351695/reasons-for-failure-of-systemic-to-pulmonary-artery-shunts-in-neonates
#2
Keti Vitanova, Cornelius Leopold, Jelena Pabst von Ohain, Cordula Wolf, Elisabeth Beran, Rüdiger Lange, Julie Cleuziou
BACKGROUND:  Systemic-to-pulmonary artery shunt placement is an established palliative procedure for congenital heart disease. Although it is thought to be a simple operation, it is associated with significant morbidity and mortality. METHODS:  Data for all neonates who underwent surgery for a systemic-to-pulmonary artery shunt between 2000 and 2016 were reviewed. The study endpoints were shunt failure and shunt-related mortality. Shunt failure was defined as a shunt dysfunction because of thrombosis or stenosis requiring intervention or reoperation; shunt mortality was defined as death because of a shunt dysfunction...
January 19, 2018: Thoracic and Cardiovascular Surgeon
https://www.readbyqxmd.com/read/29351113/fatigue-failure-of-external-hexagon-connections-on-cemented-implant-supported-crowns
#3
João Malta Barbosa, Daniel Navarro da Rocha, Ronaldo Hirata, Gileade Freitas, Estevam A Bonfante, Paulo G Coelho
PURPOSE: To evaluate the probability of survival and failure modes of different external hexagon connection systems restored with anterior cement-retained single-unit crowns. The postulated null hypothesis was that there would be no differences under accelerated life testing. MATERIALS AND METHODS: Fifty-four external hexagon dental implants (∼4 mm diameter) were used for single cement-retained crown replacement and divided into 3 groups: (3i) Full OSSEOTITE, Biomet 3i (n = 18); (OL) OEX P4, Osseolife Implants (n = 18); and (IL) Unihex, Intra-Lock International (n = 18)...
January 17, 2018: Implant Dentistry
https://www.readbyqxmd.com/read/29347926/handheld-ultrasound-to-avert-maternal-and-neonatal-deaths-in-2-regions-of-the-philippines-an-ibuntis%C3%A2-intervention-study
#4
Godofreda V Dalmacion, Ramon T Reyles, Antonia E Habana, Lalaine Mae V Cruz, Maricelle C Chua, Analyn T Ngo, Milagros J Tia-Jocson, Emmanuel S Baja
BACKGROUND: The major causes of maternal and neonatal mortality in the Philippines are hemorrhages and obstructed labor due to placental implantation abnormalities (PIAs), twin pregnancies and fetal malpresentations. All of which are all easily detected by ultrasound. However, women in rural areas and low-income groups do not have access to ultrasound during their prenatal care. We aimed to provide additional evidence on the benefits of handheld ultrasound (HU) for screening pregnancy related abnormalities in order to avert maternal and neonatal deaths...
January 18, 2018: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/29340354/implant-mandibular-overdentures-retained-by-immediately-loaded-implants-a-1-year-randomized-trial-comparing-patient-based-outcomes-between-mini-dental-implants-and-standard-sized-implants
#5
Kostas Zygogiannis, Irene Ha Aartman, Daniel Wismeijer
PURPOSE: The aim of this 1-year randomized trial was to determine the stability and the magnitude of the effect of converting patients' conventional mandibular dentures to implant overdentures (IODs) on their satisfaction and oral health-related quality of life (OHRQoL). The IODs were retained either with two immediately loaded interconnected standard-diameter implants or with four immediately loaded mini dental implants (MDIs). MATERIALS AND METHODS: Fifty completely edentulous subjects complaining about insufficient retention of their mandibular dentures were randomly assigned to two groups; 25 patients received IODs retained with four MDIs and 25 patients received IODs retained with two standard-sized tissue level (STL) interconnected implants...
January 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29340344/biomechanical-comparison-of-different-implant-inclinations-and-cantilever-lengths-in-all-on-4-treatment-concept-by-three-dimensional-finite-element-analysis
#6
Oguz Ozan, Sevcan Kurtulmus-Yilmaz
PURPOSE: The aim of this study was to evaluate the effect of implant inclination and cantilever length on the stress distribution in mandibular cortical bone, implant, abutment, prosthetic framework, and prosthetic screw via three-dimensional (3D) finite element analysis (FEA). MATERIALS AND METHODS: Four different finite element models (0-0, 17-17, 30-30, 45-30) were designed according to the tilting angle (0, 17, 30, and 45 degrees) of the posterior implant and angle of multiunit abutments (0, 17, and 30 degrees)...
January 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29338469/assessing-efficacy-of-day-3-embryo-time-lapse-algorithms-retrospectively-impacts-of-dataset-type-and-confounding-factors
#7
Yanhe Liu, Katie Feenan, Vincent Chapple, Phillip Matson
This study investigated the efficacy of four published day 3 embryo time-lapse algorithms based on different types of datasets (known implantation data [KID] and single embryo transfer [SET]), and the confounding effect of female age and conventional embryo morphology. Four algorithms were retrospectively applied to three types of datasets generated at Fertility North between February 2013 and December 2014: (a) KID dataset (n = 270), (b) a subset of SET (n = 144, end-point = implantation), and (c) SET (n = 144, end-point = live birth), respectively...
January 16, 2018: Human Fertility: Journal of the British Fertility Society
https://www.readbyqxmd.com/read/29334038/robotic-assisted-and-image-guided-mri-compatible-stereoelectroencephalography
#8
Jeffery A Hall, Hui Ming Khoo
BACKGROUND: Stereoelectroencephalography has been in regular use at the Montreal Neurological Institute since 1972. The technique has been in constant evolution to incorporate advances in materials, imaging, and robotics technology. MRI-compatible electrodes were introduced in 2007 and robotics in 2011. Here we report on the technique, safety, and advantages of our current method of stereoelectroencephalography implantation. METHODS: We retrospectively reviewed all patients who underwent stereoelectroencephalography by the senior author...
January 2018: Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques
https://www.readbyqxmd.com/read/29330858/long-term-outcomes-of-cochlear-implantation-in-patients-with-high-frequency-hearing-loss
#9
J Thomas Roland, Bruce J Gantz, Susan B Waltzman, Aaron J Parkinson
OBJECTIVE: To demonstrate the long-term benefits of implantation in patients with high-frequency sensorineural hearing loss, this report provides 5-year follow-up on a group of implant recipients who were subjects of the Cochlear™ Nucleus® Hybrid™ L24 Implant System pivotal clinical study. METHODS: The results of three related clinical studies were compiled to provide outcome data after 1, 3, and 5 years of implant use in a group of subjects who presented with preoperative high-frequency hearing loss and were implanted with a Nucleus Hybrid L24 (Cochlear Ltd...
January 13, 2018: Laryngoscope
https://www.readbyqxmd.com/read/29329255/peri-implant-behavior-of-sloped-shoulder-dental-implants-used-for-all-on-four-protocols-an-histomorphometric-analysis-in-dogs
#10
Jose Luis Calvo Guirado, Aldo Fabian Lucero-Sánchez, Ana Boquete Castro, Marcus Abboud, Sergio Gehrke, Manuel Fernández Dominguez, Rafael Arcesio Delgado Ruiz
The aim of this study was to evaluate the soft tissue thickness and marginal bone loss around dental implants with sloped micro-threaded shoulder (35° angle) in comparing with conventional design, inserted 35° degrees angulated in post extraction sockets and immediate loaded with temporary prosthesis simulating the all-on-four protocol. Materials and Methods: Six fox hound dogs received forty-eight post extraction dental implants with the same diameter and length (Medentika, Germany), but with different neck configurations...
January 12, 2018: Materials
https://www.readbyqxmd.com/read/29314586/novel-large-pore-lightweight-polypropylene-mesh-has-better-biocompatibility-for-rat-model-of-hernia
#11
Wangwang Qiu, Cheng Zhong, Rui Xu, Ting Zou, Fujun Wang, Youben Fan, Lu Wang, Zhili Yang
PURPOSE: Abdominal wall hernias are repaired with tension-free prosthetic materials but there remains a foreign body response (FBR) to commonly used polypropylene mesh. Thus, we should optimize mesh materials to improve the patient outcomes after surgery. MATERIALS AND METHODS: A polypropylene mesh was developed with wrap knitting technique. The physical, mechanical and biocompatible characteristics were tested in a rat abdominal hernia model and compared to ULTRAPRO and Easy Prosthesis...
January 3, 2018: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/29314191/prominence-of-scientific-publications-toward-peri-implant-complications-in-implantology-a-bibliometric-analysis-using-the-h-classics-method
#12
Ho-Sheng Chiang, Ren-Yeong Huang, Pei-Wei Weng, Lian-Ping Mau, Yi-Wen Cathy Tsai, Ming-Pang Chung, Chi-Hsiang Chung, Hsiao-Wen Yeh, Yi-Shing Shieh, Wan-Chien Cheng
BACKGROUND: Current bibliometric analyses of the evolving trends in research scope category across different time periods using the H-classics method in implantology are considerably limited. OBJECTIVE: The purpose of this study was to identify the classic articles in implantology to analyze bibliometric characteristics and associated factors in implantology for the past four decades. METHOD: H-Classics in implantology were identified within four time periods between 1977 and 2016, based on the h-index from the Scopus® database...
January 3, 2018: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/29314179/an-in-vitro-oxidation-model-for-uhmwpe-incorporating-synovial-fluid-lipids
#13
Ebru Oral, Mitchell Fung, Shannon L Rowell, Orhun K Muratoglu
Post-irradiation melting of ultra-high molecular weight polyethylene (UHMWPE) reduced the oxidation potential of UHMWPE in vivo. After mid-term (5- 10 yrs) use in vivo, there is detectable oxidation in irradiated and melted joint implant retrievals. The absorption of the synovial fluid lipid squalene was identified as a possible factor initiating oxidation. We investigated the role of lipids in UHMWPE oxidation by asking: (1) Do other synovial fluid lipids initiate oxidation in irradiated and melted UHMWPE?; (2) What is the effect of the absorption of multiple lipids on UHMWPE oxidation?; (3) How does lipid-initiated oxidation in vitro compare to what is observed in long-term retrievals? We diffused emulsified single and mixed lipids into irradiated and melted UHMWPE and accelerated aged them...
January 4, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29314144/bone-augmentation-followed-by-implant-surgery-in-the-edentulous-mandible-a-systematic-review
#14
REVIEW
R J de Groot, M A E M Oomens, T Forouzanfar, E A J M Schulten
INTRODUCTION: Long-standing loss of natural teeth in the mandible can lead to severe jaw atrophy and even mandibular fracture. There is no consensus on the best preprosthetic surgical treatment to reconstruct the atrophic edentulous mandible. The purpose of this review is to provide an overview of the existing literature and to give an evidence-based recommendation for bone grafting and future research. MATERIALS AND METHODS: This systematic review was conducted according to the PRISMA statement...
January 4, 2018: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/29310445/metal-artifact-reduction-in-ct-a-phantom-study-subjective-and-objective-evaluation-of-four-commercial-metal-artifact-reduction-algorithms-when-used-on-three-different-orthopedic-metal-implants
#15
Kirsten Bolstad, Silje Flatabø, Daniel Aadnevik, Ingvild Dalehaug, Nils Vetti
Background Metal implants may introduce severe artifacts in computed tomography (CT) images. Over the last few years dedicated algorithms have been developed in order to reduce metal artifacts in CT images. Purpose To investigate and compare metal artifact reduction algorithms (MARs) from four different CT vendors when imaging three different orthopedic metal implants. Material and Methods Three clinical metal implants were attached to the leg of an anthropomorphic phantom: cobalt-chrome; stainless steel; and titanium...
January 1, 2018: Acta Radiologica
https://www.readbyqxmd.com/read/29307048/biomechanical-analysis-of-a-new-lumbar-interspinous-device-with-optimized-topology
#16
Chen-Sheng Chen, Shih-Liang Shih
Interspinous spacers used stand-alone preserve joint movement but provide little protection for diseased segments of the spine. Used as adjuncts with fusion, interspinous spacers offer rigid stability but may accelerate degeneration on adjacent levels. Our new device is intended to balance the stability and preserves motion provided by the implant. A new interspinous spacer was devised according to the results of topology optimization studies. Four finite element (FE) spine models were created that consisted of an intact spine without an implant, implantation of the novel, the device for intervertebral assisted motion (DIAM system), and the Dynesys system...
January 6, 2018: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/29299766/patient-perceived-outcomes-after-subtalar-arthroereisis-with-bioabsorbable-implants-for-flexible-flatfoot-in-growing-age-a-4-year-follow-up-study
#17
Cesare Faldini, Antonio Mazzotti, Alessandro Panciera, Valentina Persiani, Francesco Pardo, Fabrizio Perna, Sandro Giannini
PURPOSE: Results of subtalar arthroereisis in flexible flatfoot have been mainly reported in the literature using clinical or radiographical findings. However, the aim of this study is to evaluate the patient-perceived quality of life using self-reported questionnaires after subtalar arthroereisis using a bioabsorbable implant. METHODS: Italian modified FFI and the SEFAS scores were submitted to a consecutive series of 173 patients who underwent surgical treatment for flatfoot deformity using a bioabsorbable endo-orthotic implant...
January 3, 2018: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/29288549/transplantation-of-macro-encapsulated-human-islets-within-the-bioartificial-pancreas-%C3%AE-air-to-patients-with-type-1-diabetes-mellitus
#18
Per-Ola Carlsson, Daniel Espes, Amir Sedigh, Avi Rotem, Baruch Zimermann, Helena Grinberg, Tali Goldman, Uriel Barkai, Yuval Avni, Gunilla T Westermark, Lina Carlbom, Håkan Ahlström, Olof Eriksson, Johan Olerud, Olle Korsgren
Macroencapsulation devices provide the dual possibility to immunoprotect transplanted cells while also being retrievable; the latter bearing importance for safety in future trials with stem-cell derived cells. However, macroencapsulation entails a problem with oxygen supply to the encapsulated cells. The βAir device solves this with an incorporated refillable oxygen tank. This phase 1 study evaluated the safety and efficacy of implanting the βAir device containing allogeneic human pancreatic islets to patients with type 1 diabetes...
December 29, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/29287215/impact-of-vagus-nerve-stimulation-on-sleep-related-breathing-disorders-in-adults-with-epilepsy
#19
Aude Salvadé, Philippe Ryvlin, Andrea O Rossetti
BACKGROUND: Vagus nerve stimulation (VNS) can induce a sleep apnea syndrome (SAS), which in turn can worsen seizure control and represents a cardiovascular risk factor. Epidemiology of VNS-induced SAS has received little attention to date. The purpose of this study was to estimate the VNS-induced SAS prevalence and to explore clinical variables potentially correlating with its development. METHODS: We analyzed the computerized medical records of 18 consecutive adults treated for refractory epilepsy with VNS, implanted between May 2008 and October 2015...
December 26, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29285325/a-new-system-of-implant-abutment-connection-how-to-improve-a-two-piece-implant-system-sealing
#20
F Grecchi, M DI Girolamo, F Cura, V Candotto, F Carinci
Purpose: Implant dentistry has become one of the most successful dentistry techniques for replacing missing teeth. The success rate of implant dentistry is above 80%. However, peri-implantitis is a later complication of implant dentistry that if untreated, can lead to implant loss. One of the hypotized causes of peri-implantis is the bacterial leakage at the level of implant-abutment connection. Bacterial leakage is favored to the presence of a micro gap at the implant-abutment interface, allowing microorganisms to penetrate and colonize the inner part of the implant leading to biofilm accumulation and consequently to peri-implantitis development...
July 2017: Oral & Implantology
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