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https://www.readbyqxmd.com/read/28747277/glenosphere-size-in-reverse-shoulder-arthroplasty-is-larger-better-for-external-rotation-and-abduction-strength
#1
Andreas M Müller, Marian Born, Christian Jung, Matthias Flury, Christoph Kolling, Hans-Kaspar Schwyzer, Laurent Audigé
BACKGROUND: The role of glenosphere size in reverse shoulder arthroplasty (RSA) may be important in prosthetic stability, joint kinematics, rotator cuff tension and excursion, scapular impingement, humeral lateralization, deltoid wrap, and the occurrence of "notching." This study compared short- and midterm clinical and radiographic outcomes for 2 different glenosphere sizes of a single RSA type with respect to implant positioning, glenoid size, and morphology. METHODS: This retrospective analysis included 68 RSA procedures that were prospectively documented in a local register during a 5-year postoperative period...
July 24, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28739619/q-fever-prosthetic-joint-infection
#2
Scott Weisenberg, David Perlada, Thomas Peatman
Coxiella burnetii is the causative pathogen of the zoonotic infection Q fever. Most patients with Q fever experience a non-specific febrile illness, hepatitis or pneumonia. Q fever has recently been described as a cause of prosthetic joint septic arthritis, but remains very uncommonly reported. We present a case of Q fever prosthetic joint septic arthritis that has responded to a combination of two-stage surgical exchange and prolonged medical treatment with doxycycline and hydroxychloroquine.
July 24, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28738743/distraction-of-the-temporomandibular-joint-condyle-in-patients-with-unilateral-non-reducing-disc-displacement-fact-or-fiction
#3
Melih Yıldız, Süleyman Çağatay Dayan, Olcay Şakar, Tonguç Sülün
OBJECTIVES: This study investigated the distractive effect of a unilateral pivot splint on patients with unilateral disc displacement without reduction. METHODS: The study group was comprised of 18 patients who had no history of treatment with removable prosthetic restorations of molars, premolars, or canine teeth, and no previous treatment for temporomandibular disorder. Joint spaces measurements made on magnetic resonance images indicated the affected side to be narrower than the healthy side...
July 24, 2017: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/28735470/staged-reimplantation-of-a-total-hip-prosthesis-after-co-infection-with-candida-tropicalis-and-staphylococcus-haemolyticus-a-case-report
#4
Sujeesh Sebastian, Rajesh Malhotra, Ashish Pande, Deepak Gautam, Immaculata Xess, Benu Dhawan
Fungal prosthetic joint infection is a rare complication in total joint arthroplasty. There are no established guidelines for management of these infections. We present a case of a 53-year-old male with a hip joint prosthesis co-infected with Candida tropicalis and Staphylococcus haemolyticus. A two-stage exchange arthroplasty was performed. The patient underwent implant removal, debridement, irrigation with saline solution and application of cement spacer impregnated with vancomycin followed by aggressive antimicrobial treatment in first stage...
July 22, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28724376/sonication-contribution-to-identifying-prosthetic-joint-infection-with-ralstonia-pickettii-a-case-report-and-review-of-the-literature
#5
Rares Mircea Birlutiu, Mihai Dan Roman, Razvan Silviu Cismasiu, Sorin Radu Fleaca, Crina Maria Popa, Manuela Mihalache, Victoria Birlutiu
BACKGROUND: In the context of an increase number of primary and revision total hip and total knee arthroplasty performed yearly, an increased risk of complication is expected. Prosthetic joint infection (PJI) remains the most common and feared arthroplasty complication. Ralstonia pickettii is a Gram-negative bacterium, that has also been identified in biofilms. It remains an extremely rare cause of PJI. There is no report of an identification of R. pickettii on an extracted spacer loaded with antibiotic...
July 19, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28721044/stimulated-phase-shift-acoustic-nanodroplets-enhance-vancomycin-efficacy-against-methicillin-resistant-staphylococcus-aureus-biofilms
#6
Hao Guo, Ziming Wang, Quanyin Du, Pan Li, Zhigang Wang, Aimin Wang
PURPOSE: Bacterial biofilms on the surface of prostheses are becoming a rising concern in managing prosthetic joint infections. The inherent resistant features of biofilms render traditional antimicrobial therapy unproductive and revision surgery outcomes uncertain. This situation has prompted the exploration of novel antimicrobial strategies. The synergy of ultrasound microbubbles and vancomycin has been proposed as an efficient alternative for biofilm eradication. The purpose of this study was to evaluate the anti-biofilm effect of stimulated phase-shift acoustic nanodroplets (NDs) combined with vancomycin...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28716659/articulating-antibiotic-impregnated-spacers-in-prosthetic-joint-infections-where-do-we-stand
#7
Owen J Diamond, Bassam A Masri
Peri-prosthetic joint infection remains one of the most difficult and challenging complications following hip and knee arthroplasty for both patients and surgeons. Two-stage revision arthroplasty for infection remains the most popular option for the majority of patients and arguably the only option for some. The use antibiotic spacers and in particular articulating spacers has improved the quality of life for patients between stages. The spacers provides local delivery of high concentration antibiotics and provides many benefits to the soft tissues including maintaining soft tissue tension and range of movement...
July 14, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28715055/risk-of-surgical-site-infections-following-hip-and-knee-arthroplasty-results-of-the-ischia-gisio-study
#8
A Agodi, F Auxilia, M Barchitta, M L Cristina, D D'Alessandro, I Mura, M Nobile, C Pasquarella, Gisio Gisio-SItI
BACKGROUND: Surgical Site Infection (SSI) is one of the major complications following insertion of hip or knee prosthesis. The aim of the present study was to describe rates of SSIs and associated risk factors during hip and knee prosthesis procedures in Italian hospitals. METHODS: Italian hospitals were invited to join the ISChIA (Surgical Site Infections in Arthroplasty Surgery) project and participated in the study on a voluntary basis. SSI surveillance was performed according to the Hospitals in Europe Link for Infection Control through Surveillance (HELICS) -SSI protocol...
September 2017: Annali di Igiene: Medicina Preventiva e di Comunità
https://www.readbyqxmd.com/read/28714050/superiority-of-the-sonication-method-against-conventional-periprosthetic-tissue-cultures-for-diagnosis-of-prosthetic-joint-infections
#9
Sofia Tani, Panagiotis Lepetsos, Antonios Stylianakis, John Vlamis, Konstantinos Birbas, Ioannis Kaklamanos
INTRODUCTION: Diagnosis of periprosthetic infections is challenging. The aim of this study was to compare the diagnostic accuracy of conventional periprosthetic tissue culture and culture of sonication fluid of the explanted prostheses. METHODS: We prospectively enrolled 114 patients undergoing revision hip or knee arthroplasty because of loosening of the prostheses, at our institution, between July 2012 and July 2016. Patients' medical history and demographic characteristics were recorded...
July 17, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28713612/in-vivo-magnetic-resonance-imaging-morphometry-of-the-patella-bone-in-south-indian-population
#10
Reshma Muhamed, Vasudha V Saralaya, B V Murlimanju, Ganesh Kumar Chettiar
Racial differences exist in the dimensions of structures and the commercially available prostheses are designed based on the Caucasians. In this context, the goal of the present investigation was to determine the gender wise measurements of patella bone in South Indians. The present study included axial magnetic resonance images of the knee joint from 140 South Indian adults (70 males, 70 females; aged between 20-70 years). The angle, width, thickness, lateral facet width, facet thickness, ratio of the lateral facet, the relative thickness and ratio of facet thickness were measured in the patella by using the digital ruler...
June 2017: Anatomy & Cell Biology
https://www.readbyqxmd.com/read/28713108/current-prescribing-practices-for-antibiotic-prophylaxis-a-survey-of-dental-practitioners
#11
Leah S Spittle, Kathleen B Muzzin, Patricia R Campbell, Janice P DeWald, Francisco Rivera-Hidalgo
AIM: Antibiotic prophylaxis guidelines have been developed for health care and dentistry. The authors examined whether dentists were following the 2007 American Heart Association (AHA) and the 2012 American Association of Orthopaedic Surgeons (AAOS) recommendations for antibiotic prophylaxis. MATERIALS AND METHODS: A survey was sent to 600 dentists in the south-central region of the United States. The survey examined dentists' prescribing practices for patients with cardiac and prosthetic joint replacements, antibiotic regimen prescribed, confidence in their prescription decisions, and dentistry's contribution to antibiotic resistance...
July 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28708567/%C3%AE-defensin-point-of-care-test-for-diagnosis-of-prosthetic-joint-infections-neglected-role-of-laboratory-and-clinical-pathologists
#12
REVIEW
Lorenzo Drago, Marco Toscano, Lorenza Tacchini, Giuseppe Banfi
Periprosthetic joint infection (PJI) is a serious complication that may occur after native joint replacement leading to a severe health and economic burden. Currently, due to several confounding factors, PJI is difficult to diagnose. Today, a multidisciplinary approach is indispensable to correctly define a periprosthetic joint infection; indeed, tissue histology, microbiology cultures and clinical findings are used together to achieve this goal. Analysis of α-defensin is commonly used for PJI diagnosis, as it allows the rapid detection of α-defensin present in the synovial fluid following a microbial infection...
July 14, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28706395/salmonella-typhimurium-infection-in-total-knee-arthroplasty-a-case-report-with-review-of-literature
#13
Sujeesh Sebastian, Benu Dhawan, Rajesh Malhotra, Deepak Gautam, Arti Kapil
Salmonella enterica serotype Typhimurium is a rare cause of prosthetic joint infection (PJI). The recognized predisposing risk factors for Salmonella septic arthritis include diabetes mellitus, renal failure, human immunodeficiency virus infection and chronic corticosteroid use. We describe a case of PJI of the knee in a 74-year-old lady who was on antitubercular treatment. The patient presented with discharging sinus and raised inflammatory markers. She was successfully treated by the removal of prosthesis and debridement followed by ciprofloxacin therapy for 6 weeks...
July 2017: Journal of Laboratory Physicians
https://www.readbyqxmd.com/read/28702455/synergistic-interactions-of-a-synthetic-lubricin-mimetic-with-fibronectin-for-enhanced-wear-protection
#14
Roberto C Andresen Eguiluz, Sierra G Cook, Mingchee Tan, Cory N Brown, Noah J Pacifici, Mihir S Samak, Lawrence J Bonassar, David Putnam, Delphine Gourdon
Lubricin (LUB), a major mucinous glycoprotein of mammalian synovial fluids, is believed to provide excellent lubrication to cartilage surfaces. Consequently, when joint disease or replacement leads to increased friction and surface damage in the joint, robust synthetic LUB alternatives that could be used therapeutically to improve lubrication and surface protection are needed. Here, we report the characterization of a lubricating multiblock bottlebrush polymer whose architecture was inspired by LUB, and we investigate the role of fibronectin (FN), a glycoprotein found in the superficial zone of cartilage, in mediating the tribological properties of the polymer upon shear between mica surfaces...
2017: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/28698316/description-of-the-rates-trends-and-surgical-burden-associated-with-revision-for-prosthetic-joint-infection-following-primary-and-revision-knee-replacements-in-england-and-wales-an-analysis-of-the-national-joint-registry-for-england-wales-northern-ireland-and
#15
Erik Lenguerrand, Michael R Whitehouse, Andrew D Beswick, Andrew D Toms, Martyn L Porter, Ashley W Blom
OBJECTIVES: To describe the prevalence rates of revision surgery for the treatment of prosthetic joint infection (PJI) for patients undergoing knee replacement, their time trends, the cumulative incidence function of revision for PJI and estimate the burden of PJI at health service level. DESIGN: We analysed revision knee replacements performed due to a diagnosis of PJI and the linked index procedures recorded in the National Joint Registry from 2003 to 2014 for England and Wales...
July 10, 2017: BMJ Open
https://www.readbyqxmd.com/read/28693543/finite-element-analysis-of-porously-punched-prosthetic-short-stem-virtually-designed-for-simulative-uncemented-hip-arthroplasty
#16
Matthew Jian-Qiao Peng, Hai-Yan Chen, Yong Hu, XiangYang Ju, Bo Bai
BACKGROUND: There is no universal hip implant suitably fills all femoral types, whether prostheses of porous short-stem suitable for Hip Arthroplasty is to be measured scientifically. METHODS: Ten specimens of femurs scanned by CT were input onto Mimics to rebuild 3D models; their *stl format dataset were imported into Geomagic-Studio for simulative osteotomy; the generated *.igs dataset were interacted by UG to fit solid models; the prosthesis were obtained by the same way from patients, and bored by punching bears designed by Pro-E virtually; cements between femora and prosthesis were extracted by deleting prosthesis; in HyperMesh, all compartments were assembled onto four artificial joint style as: (a) cemented long-stem prosthesis; (b) porous long-stem prosthesis; (c) cemented short-stem prosthesis; (d) porous short-stem prosthesis...
July 11, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28690040/bioactivity-of-ceftazidime-and-fluconazole-included-in-polymethyl-methacrylate-bone-cement-for-use-in-arthroplasty
#17
J Martínez-Moreno, V Merino, A Nácher, J L Rodrigo, Blanca B Bonet Yuste, M Merino-Sanjuán
BACKGROUND: The microorganisms that most frequently cause prosthetic joint infection are methicillin-resistant Staphylococcus aureus and gram-negative aerobic bacillus. Studies have documented the efficacy of mixing antibiotics with polymethyl methacrylate, but that of antifungal drugs has not received much attention. The objective of this in vitro study was to characterize the elution profile and bioactivity of ceftazidime and fluconazole when incorporated into bone cement in proportions intended for prophylaxis and treatment of bone infections...
May 4, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28686144/synovial-fluid-%C3%AE-defensin-as-a-biomarker-for-peri-prosthetic-joint-infection-a-systematic-review-and-meta-analysis
#18
Bin Li, Fei Chen, Yi Liu, Guokang Xu
BACKGROUND: Total joint arthroplasty (TJA) has been one of the most beneficial interventions for treating patients suffering from joint disorders. However, peri-prosthetic joint infection (PJI) is a serious complication that often accompanies TJA and the diagnosis of PJI is remains difficult. Questions remain regarding whether certain biomarkers can be valuable in the diagnosis of PJI. PATIENTS AND METHODS: We conducted our systematic review by searching PubMed, Embase, Web of Science, the Cochrane Library, and Science Direct with the key words "periprosthetic joint infection," "synovial fluid," and "α-defensin...
July 7, 2017: Surgical Infections
https://www.readbyqxmd.com/read/28683496/-prosthetic-joint-infection-after-total-hip-arthroplasty-results-of-an-online-questionnaire-about-current-diagnostic-and-therapeutic-procedures-in-107-german-hospitals
#19
Elia Raoul Langenmair, Lukas Konstantinidis, Norbert P Südkamp, Peter Helwig
Background Prosthetic hip joint infection is a common severe complication with a high socio-economic impact. The inconsistency of the available data and the absence of binding guidelines lead to a variety of diagnostic and therapeutic strategies. The aim of this study is to present the current diagnostic and therapeutic approach to treating infections after total hip arthroplasties in German hospitals, link it with current evidence, and evaluate the willingness of these hospitals to participate in prospective multicentre trials...
June 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/28675248/quick-bacteriophage-mediated-bioluminescence-assay-for-detecting-staphylococcus-spp-in-sonicate-fluid-of-orthopaedic-artificial-joints
#20
Katja Šuster, Aleš Podgornik, Andrej Cör
Staphylococcus spp. accounts for up to two thirds of all microorganisms causing prosthetic joint infections, with Staphylococcus aureus and Staphylococcus epidermidis being the major cause. The present study describes a diagnostic model to detect staphylococci using a specific bacteriophage and bioluminescence detection, exploring the possibility of its use on sonicate fluid of orthopaedic artificial joints. Intracellular adenosine-5'-triphosphate release by bacteriophage mediated lysis of staphylococci was assessed to determine optimal parameters for detection...
July 4, 2017: New Microbiologica
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