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https://www.readbyqxmd.com/read/29352681/no-consensus-for-femoral-head-impaction-technique-in-surgeon-education-materials-from-orthopedic-implant-manufacturers
#1
Brian J McGrory, Eric Ng
BACKGROUND: Prior studies indicate that one factor that may contribute to total hip arthroplasty failure due to mechanically assisted crevice corrosion at the femoral head-trunnion junction is the method of femoral head fixation. METHODS: Up-to-date on-line surgical technique guides describing fixation of the prosthetic femoral head of common implants of the 4 largest manufacturers as well as 2 minor manufacturers were identified. The information given regarding preparation and fixation of the femoral head was evaluated and compared...
December 30, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29351870/de-novo-generation-in-an-in-vivo-rat-model-and-biomechanical-characterization-of-autologous-transplants-for-ligament-and-tendon-reconstruction
#2
Marc Soubeyrand, Elisabeth Laemmel, Nathalie Maurel, Amadou Diop, Thierry Lazure, Jacques Duranteau, Eric Vicaut
BACKGROUND: Surgical reconstruction of ligaments and tendons is frequently required in clinical practice. The commonly used autografts, allografts, or synthetic transplants present limitations in terms of availability, biocompatibility, cost, and mechanical properties that tissue bioengineering aims to overcome. It classically combines an exogenous extracellular matrix with cells, but this approach remains complex and expensive. Using a rat model, we tested a new bioengineering strategy for the in vivo and de novo generation of autologous grafts without the addition of extracellular matrix or cells, and analyzed their biomechanical and structural properties...
December 14, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/29351695/reasons-for-failure-of-systemic-to-pulmonary-artery-shunts-in-neonates
#3
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/29351635/reversibility-of-severe-mitral-valve-regurgitation-after-left-ventricular-assist-device-implantation-single-centre-observations-from-a-real-life-population-of-patients
#4
Monica Dobrovie, Ricardo A Spampinato, Elena Efimova, Jaqueline G da Rocha E Silva, Julia Fischer, Michael Kuehl, Jens-Uwe Voigt, Ann Belmans, Agnieszka Ciarka, Fernanda Bonamigo Thome, Valerie Schloma, Yaroslava Dmitrieva, Sven Lehmann, Jochen Hahn, Elfriede Strotdrees, Friedrich-Wilhelm Mohr, Jens Garbade, Anna L Meyer
OBJECTIVES: This study evaluates the impact of untreated preoperative severe mitral valve regurgitation (MR) on outcomes after left ventricular assist device (LVAD) implantation. METHODS: Of the 234 patients who received LVAD therapy in our centre during a 6-year period, we selected those who had echocardiographic images of good quality and excluded those who underwent mitral valve replacement prior to or mitral valve repair during LVAD placement. The 128 patients selected were divided into 2 groups: Group A with severe MR (n = 65) and Group B with none to moderate MR (n = 63, 28 with moderate MR)...
January 16, 2018: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/29351113/fatigue-failure-of-external-hexagon-connections-on-cemented-implant-supported-crowns
#5
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/29351052/particulate-coral-hydroxyapatite-sheltered-by-titanium-mesh-for-localized-alveolar-rehabilitation-after-onlay-graft-failure-a-case-report
#6
Miao Zhou, Shuyi Li, Hendrik Terheyden, Shuaishuai Cao, Yuejuan Che, Yuanming Geng
Reconstruction of bone loss in the alveolar ridge has long been challenging. Autologous bone grafts are considered as the "golden standard", while little research has focused on how to repair pronounced alveolar bone defects after autologous bone graft failure. The aim of this study was to detail a method based on the titanium mesh technique coupled with particulate coral hydroxyapatite to solve the Onlay graft failure. With bone deficiency in the #11 and #24- #25 regions, we harvested two autologous bone blocks for reconstruction...
January 19, 2018: Journal of Oral Implantology
https://www.readbyqxmd.com/read/29350546/-we-re-like-a-gang-we-stick-together-experiences-of-ventricular-assist-device-communities
#7
Holly C Standing, Catherine Exley, Guy A MacGowan, Tim Rapley
BACKGROUND: Ventricular assist devices (VADs) are a relatively new development in the management of advanced heart failure. In the UK, VAD recipients comprise a unique group of less than 200 patients. This is the first paper to explore the experience of VAD communities, the extent to which communities are developed around the device, and how these influence the experience of living with the VAD. METHODS: Qualitative interviews were conducted with 20 VAD recipients (implanted as a bridge to transplantation), 11 interviews also included the VAD recipients' partners...
January 1, 2018: European Journal of Cardiovascular Nursing
https://www.readbyqxmd.com/read/29349979/-capsular-enhanced-repair-with-suture-anchors-in-bipolar-hemiarthroplasty-for-the-treatment-of-femoral-neck-fractures-in-elderly-patients
#8
Bo Shi, Ming-Rui Xie, Zong-Yuan Li
OBJECTIVE: To evaluate the efficacy of capsular-enhanced repair with suture anchors in bipolar hemiarthroplasty for the treatment of femoral neck fractures in elderly patients. METHODS: A retrospective study was designed. From June 2009 to June 2016, 53 senile patients (54 hips)with femoral neck fracture were treated operatively in Mianyang central hospital (Sichuan, China). There were 21 males and 32 females, ranging in age from 80 to 97.5 years old (mean, 84.7 years old)...
April 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29349966/-a-medium-term-therapeutic-effects-of-anatomic-locking-plate-for-femoral-intertrochanteric-with-lateral-femoral-wall-fractures
#9
Jin-Wei Xu, Lei Han, Yun-Gen Hu, Wei-Li Fang, Bo Ji
OBJECTIVE: To retrospectively study medium term follow-up outcomes of the femoral intertrochanteric with lateral femoral wall fractures using anatomic locking plate fixation. METHODS: From June 2010 to January 2013, 18 cases of the unstable femoral intertrochanteric with lateral femoral wall fractures were treated with the anatomic locking plate, included 8 males and 10 females with an average age of 75.5 years ranging from 19 to 83 years old. There were 8 cases of traffic accident injuries, 6 cases of falls injuries, and 4 cases of falling from high place...
March 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29349805/hybrid-continuous-flow-total-artificial-heart
#10
Carson Fox, Steven Chopski, Nohra Murad, Paul Allaire, Robert Mentzer, Joseph Rossano, Francisco Arabia, Amy Throckmorton
Clinical studies using total artificial hearts (TAHs) have demonstrated that pediatric and adult patients derive quality-of-life benefits from this form of therapy. Two clinically-approved TAHs and other pumps under development, however, have design challenges and limitations, including thromboembolic events, neurologic impairment, infection risk due to large size and percutaneous drivelines, and lack of ambulation, to name a few. To address these limitations, we are developing a hybrid-design, continuous-flow, implantable or extracorporeal, magnetically-levitated TAH for pediatric and adult patients with heart failure...
January 18, 2018: Artificial Organs
https://www.readbyqxmd.com/read/29348112/comparing-short-dental-implants-to-standard-dental-implants-protocol-for-a-systematic-review
#11
Amir Reza Rokn, Abbasali Keshtkar, Abbas Monzavi, Kazem Hashemi, Tahereh Bitaraf
BACKGROUND: Short dental implants have been proposed as a simpler, cheaper, and faster alternative for the rehabilitation of atrophic edentulous areas to avoid the disadvantages of surgical techniques for increasing bone volume. OBJECTIVE: This review will compare short implants (4 to 8 mm) to standard implants (larger than 8 mm) in edentulous jaws, evaluating on the basis of marginal bone loss (MBL), survival rate, complications, and prosthesis failure. METHODS: We will electronically search for randomized controlled trials comparing short dental implants to standard dental implants in the following databases: PubMed, Web of Science, EMBASE, Scopus, the Cochrane Central Register of Controlled Trials, and ClinicalTrials...
January 18, 2018: JMIR Research Protocols
https://www.readbyqxmd.com/read/29348008/impact-of-pre-existing-prosthesis-patient-mismatch-on-survival-following-aortic%C3%A2-valve-in-valve%C3%A2-procedures
#12
Philippe Pibarot, Matheus Simonato, Marco Barbanti, Axel Linke, Ran Kornowski, Tanja Rudolph, Mark Spence, Neil Moat, Gabriel Aldea, Marco Mennuni, Alessandro Iadanza, Hafid Amrane, Diego Gaia, Won-Keun Kim, Massimo Napodano, Hardy Baumbach, Ariel Finkelstein, Junjiro Kobayashi, Stephen Brecker, Creighton Don, Alfredo Cerillo, Axel Unbehaun, David Attias, Mohammed Nejjari, Noah Jones, Claudia Fiorina, Didier Tchetche, Raphael Philippart, Konstantinos Spargias, Jose-Maria Hernandez, Azeem Latib, Danny Dvir
OBJECTIVES: The aim of this study was to determine whether the association of small label size of the surgical valve with increased mortality after transcatheter valve-in-valve (ViV) implantation is, at least in part, related to pre-existing prosthesis-patient mismatch (PPM) (i.e., a bioprosthesis that is too small in relation to body size). BACKGROUND: Transcatheter ViV implantation is an alternative for the treatment of patients with degenerated bioprostheses...
January 22, 2018: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29347851/the-era-of-biofunctional-biomaterials-in-orthopedics-what-does-the-future-hold
#13
Mubashar Rehman, Asadullah Madni, Thomas J Webster
Titanium-based materials do not fulfill all the requirements of orthopedic implants due to a mismatch in mechanical properties with bone which are prone to change during the course of bone growth. Biofunctional biomaterials are a new class of materials that show bioactivity and adaptability at any stage of bone growth. Areas covered: Different biofunctional biomaterials have evolved over time that can enhance calcium phosphate (CaP) precipitation, stimulate osteogenic differentiation, and can control osteoblast gene expression...
January 18, 2018: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/29346300/trapezium-bone-density-a-comparison-of-measurements-by-dxa-and-ct
#14
Sebastian Breddam Mosegaard, Kamille Breddam Mosegaard, Nadia Bouteldja, Torben Bæk Hansen, Maiken Stilling
Bone density may influence the primary fixation of cementless implants, and poor bone density may increase the risk of implant failure. Before deciding on using total joint replacement as treatment in osteoarthritis of the trapeziometacarpal joint, it is valuable to determine the trapezium bone density. The aim of this study was to: (1) determine the correlation between measurements of bone mineral density of the trapezium obtained by dual-energy X-ray absorptiometry (DXA) scans by a circumference method and a new inner-ellipse method; and (2) to compare those to measurements of bone density obtained by computerized tomography (CT)-scans in Hounsfield units (HU)...
January 18, 2018: Journal of Functional Biomaterials
https://www.readbyqxmd.com/read/29345510/preliminary-evaluation-of-the-viability-of-peritoneal-drainage-catheters-implanted-in-rats-for-extended-durations
#15
Nathan Legband, Arielle Black, Craig Kreikemeier-Bower, Benjamin S Terry
Purpose/Aim: In developing a novel peritoneal oxygenation therapy, catheters implanted into the peritoneal cavity became obstructed with omental tissue and prevented the infusion and removal of fluid from the peritoneal cavity. The obstruction of peritoneal catheters is a significant failure in researching various peritoneal treatments as further fluid administration is no longer possible. The purpose of this preliminary study was to determine the most effective catheter design for infusion and removal of fluid into the peritoneal cavity of rats...
January 18, 2018: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/29345170/cemented-total-hip-replacement-in-patients-under-55-years
#16
Manish Kiran, Linda R Johnston, Sankar Sripada, Gordon G Mcleod, Arpit C Jariwala
Background and purpose - About 86,000 total hip replacements (THR) have been registered in patients under 55 years in the National Joint Registry of England and Wales (NJR). The use of uncemented implants has increased, despite their outcomes not having been proven to be significantly better than cemented implants in this registry. We determined the implant survivorship and functional outcomes of cemented THR in patients under 55 years at a minimum follow-up of 22 years. Patients and methods - 104 hips in 100 patients were included in this prospective study...
January 18, 2018: Acta Orthopaedica
https://www.readbyqxmd.com/read/29344950/systematic-review-and-meta-analysis-of-left-ventricular-endocardial-pacing-in-advanced-heart-failure-clinically-efficacious-but-at-what-cost
#17
Adam Graham, Rui Providenica, Shohreh Honarbakhsh, Neil Srinivasan, Vinit Sawhney, Ross Hunter, Pier Lambiase
INTRODUCTION: Cardiac resynchronization using a left ventricular (LV) epicardial lead placed in the coronary sinus is now routinely used in management of heart failure patients. LV endocardial pacing is an alternative when this is not feasible, with outcomes data sparse. OBJECTIVE: To review the available evidence on the efficacy and safety of endocardial LV pacing via meta-analysis. METHODS: EMBASE, MEDLINE and COCHRANE databases with the search term "endocardial biventricular pacing" or "endocardial cardiac resynchronization" or "left ventricular endocardial" or "endocardial left ventricular"...
January 18, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29342496/-adverse-events-in-the-treatment-of-periprosthetic-fractures-around-the-knee-a-clinical-and-radiological-outcome-analysis
#18
Anna Janine Schreiner, Christoph Gonser, Christoph Ihle, Max Konstantin Zauleck, Tim Klopfer, Fabian Stuby, Ulrich Stöckle, Björn Gunnar Ochs
BACKGROUND: The incidence of periprosthetic fractures associated with total knee arthroplasty (PpFxK) has been reported to be 0.3 - 5.5%. 40% of all cases are related to revision TKA. The most common localisation is the distal femur. Classification is performed according to Rorabeck (RB). RB I - II fractures are usually treated with locked plating and retrograde intramedullary nailing, whereas RB III fractures are an indication for revision arthroplasty using a hinged endoprosthesis...
January 17, 2018: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/29342243/devices-in-heart-failure-diagnosis-detection-and-disease-modification
#19
John Gierula, Mark T Kearney, Klaus K Witte
Introduction/background: Implantable cardiac devices are widely used in chronic heart failure (CHF) therapy. This review covers current CHF treatment with electronic cardiac devices, areas of discussion and emerging technologies. Sources of data: A comprehensive search of available literature resources including Pubmed, MEDLINE and EMBASE was performed. National and international guidelines were accessed. Areas of agreement: Excessive right ventricular pacing is detrimental to cardiac function...
January 12, 2018: British Medical Bulletin
https://www.readbyqxmd.com/read/29341172/statin-use-and-the-risk-of-cardiovascular-implantable-electronic-device-infection-a-cohort-study-in-a-veteran-population
#20
Talal Alzahrani, Angelike P Liappis, Larry M Baddour, Pamela E Karasik
BACKGROUND: The rate of cardiovascular implantable electronic device infection (CIEDI) has increased, despite the use of perioperative antibiotics at the time of device placement or revision. This is due, in part, to the presence of multiple comorbid conditions in an elderly population, in general, who require CIED. Statins may have an antibacterial effect, although there is currently no evidence that the likelihood of CIEDI has been impacted by statin use. METHODS: A retrospective cohort study was performed to assess whether statins are associated with a reduced risk of CIEDI...
January 17, 2018: Pacing and Clinical Electrophysiology: PACE
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