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https://www.readbyqxmd.com/read/29776852/indications-for-mars-mri-in-patients-treated-with-articular-surface-replacement-xl-total-hip-arthroplasty
#1
James W Connelly, Vincent P Galea, Inari Laaksonen, Sean J Matuszak, Rami Madanat, Orhun Muratoglu, Henrik Malchau
BACKGROUND: The purpose of this study was to identify which patient and clinical factors are predictive of adverse local tissue reaction (ALTR) and to use these factors to create a highly sensitive algorithm for indicating metal artifact reduction sequence magnetic resonance imaging (MARS-MRI) in Articular Surface Replacement (ASR) XL total hip arthroplasty patients. Our secondary aim was to compare our algorithm to existing national guidelines on when to take MARS-MRI in metal-on-metal total hip arthroplasty patients...
April 19, 2018: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29776814/metallosis-in-cemented-titanium-alloy-total-knee-arthroplasty-without-apparent-metal-on-metal-articulation
#2
James Ho, John Mahajan, Martin Taylor, Ashlyn Byers, Paul Arauz, Young-Min Kwon
BACKGROUND: Metallosis is an uncommon phenomenon observed in late failures of cemented total knee arthroplasty (TKA), and it is rarely seen in the absence of metal-on-metal articulation. METHODS: We report the case of a TKA patient with cemented titanium-alloy components and a polyethylene patella that was revised for early loosening with intra-operative severe metallosis. RESULTS: We found that loosening and severe metallosis were associated with methacrylate particle abrasion on titanium alloy surfaces...
May 16, 2018: Knee
https://www.readbyqxmd.com/read/29773173/gene-expression-in-adverse-reaction-to-metal-debris-around-metal-on-metal-arthroplasty-an-rna-seq-based-study
#3
Antti Pemmari, Tiina Leppänen, Erja-Leena Paukkeri, Antti Eskelinen, Teemu Moilanen, Eeva Moilanen
Joint replacement surgery is a standard treatment of advanced osteoarthritis (OA). Since 2000, cobalt-chromium (CoCr) metal-on-metal (MoM) implants were widely used in hip arthroplasties. Some patients developed "adverse reaction to metal debris" (ARMD) around the prosthesis, resulting in a need for revision surgery. In the present study, we addressed the pathogenesis of ARMD by genome-wide expression analysis. Pseudosynovial ARMD tissue was obtained from revision surgery of Articular Surface Replacement (ASR, DePuy, Warsaw, IN, USA) hip arthroplasties...
July 2018: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/29768492/association-between-periprosthetic-tissue-metal-content-whole-blood-and-synovial-fluid-metal-ion-levels-and-histopathological-findings-in-patients-with-failed-metal-on-metal-hip-replacement
#4
Lari Lehtovirta, Aleksi Reito, Jyrki Parkkinen, Sirpa Peräniemi, Jouko Vepsäläinen, Antti Eskelinen
Adverse Reaction to Metal Debris (ARMD) is a major cause of implant failure leading to revision surgery in patients with metal-on-metal (MoM) hip arthroplasties. However, the pathogenesis and its association to implant wear are poorly understood and previous studies have yielded discrepant results. We sought to investigate the associations between histological findings, whole blood and synovial fluid metal ion concentrations and periprosthetic tissue metal concentrations in patients with MoM total hip replacements and hip resurfacings revised for ARMD...
2018: PloS One
https://www.readbyqxmd.com/read/29762185/intraosseous-heat-generation-during-osteotomy-performed-freehand-and-through-template-with-an-integrated-metal-guide-sleeve-an-in-vitro-study
#5
Ibrahim Barrak, Árpád Joób-Fancsaly, Gábor Braunitzer, Endre Varga, Kristóf Boa, József Piffkó
OBJECTIVE: To investigate drill wear and consequent intraosseous temperature elevation during freehand and guided bone drilling, with attention to the effect of metal-on-metal contact during guided drilling. MATERIALS AND METHODS: Osteotomies were performed on bovine ribs, with 2.0 mm diameter stainless steel drill bits of the SMART Guide System, under 3 sterilization protocols, at 800, 1200, 1500, and 2000 rpm. Sterilization was performed after every 3 drilling...
May 14, 2018: Implant Dentistry
https://www.readbyqxmd.com/read/29748491/the-effect-of-kinematic-conditions-and-synovial-fluid-composition-on-the-frictional-behaviour-of-materials-for-artificial-joints
#6
David Nečas, Martin Vrbka, Ivan Křupka, Martin Hartl
The paper introduces an experimental investigation of frictional behaviour of materials used for joint replacements. The measurements were performed using a ball-on-disc tribometer, while four material combinations were tested; metal-on-metal, ceramic-on-ceramic, metal-on-polyethylene, and ceramic-on-polyethylene, respectively. The contact was lubricated by pure saline and various protein solutions. The experiments were realized at two mean speeds equal to 5.7 mm/s and 22 mm/s and two slide-to-roll ratios, −150% and 150%...
May 10, 2018: Materials
https://www.readbyqxmd.com/read/29736286/a-misdiagnosed-complication-of-a-metal-on-metal-total-hip-arthroplasty
#7
Az-Eddine Djebara, Cédric Joseph, Florence Rousseau, Benoit Brunschweiler, Patrice Mertl
Introduction: The enterobacterial genus Yersinia includes a number of human pathogens. Large-diameter, metal-on-metal prostheses are no longer used because of their high failure rate. Here, we describe the first case of Yersinia enterocolitica infection of a metal-on-metal total hip arthroplasty. Clinical Examination: A metal-on-metal prosthesis failed ten years after implantation. After surgical revision, bacteriological testing revealed the presence of a pathogenic strain of Yersinia enterocolitica ...
2018: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/29732504/femoral-offset-found-not-to-affect-metal-ion-levels-in-metal-on-metal-total-hip-arthroplasty
#8
Eoghan Pomeroy, Fergal Macnamara, Evelyn Murphy, Niall McGoldrick, Anant Mahapatra, Nasir Awan
BACKGROUND: Failure to restore femoral offset in metal on polyethylene total hip arthroplasty (THA) causes polyethylene wear and aseptic loosening. To our knowledge, no study to date has investigated the relationship between femoral offset and wear in metal-on-metal (MOM) THA. AIMS: In this study, we investigated the relationship between femoral offset and wear by measuring circulating metal ion levels in MOM THA. METHODS: In this retrospective study, we identified patients who had undergone MOM THA with the ASR XL system (DePuy International Ltd...
May 7, 2018: Irish Journal of Medical Science
https://www.readbyqxmd.com/read/29716769/the-cobalt-chromium-ratio-provides-similar-diagnostic-value-to-a-low-cobalt-threshold-in-predicting-adverse-local-tissue-reactions-in-patients-with-metal-on-metal-hip-arthroplasty
#9
Inari Laaksonen, Vincent P Galea, Gabrielle S Donahue, Sean J Matuszak, Orhun Muratoglu, Henrik Malchau
BACKGROUND: A higher cobalt/chromium (Co/Cr) ratio is thought to be associated with corrosion of the trunnion and increased adverse local tissue reaction (ALTR) risk in patients treated with metal-on-metal (MoM) hip arthroplasty. The main aim of this study was to investigate the diagnostic value of Co/Cr ratio in identifying ALTR in patients treated with MoM hip resurfacing arthroplasty and total hip arthroplasty (THA). METHODS: A total of 310 unilateral patients were included...
April 9, 2018: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29708567/relationship-of-blood-metal-ion-levels-and-leukocyte-profiles-in-patients-with-articular-surface-replacement-metal-on-metal-hip-replacement
#10
David C Markel, Christopher Bergum, Jeffrey Flynn, Nancy Jackson, Therese Bou-Akl, Weiping Ren
The purpose of this study was to compare blood leukocyte profiles and metal ion concentrations between hip resurfacing arthroplasty (articular surface replacement) patients with and without revision. A total of 25 articular surface replacement patients were recruited (10 with stable implants and 15 undergoing revision). Blood concentrations of chromium (Cr) and cobalt (Co) were measured. Flow cytometry was used to quantify the subpopulations of leukocytes, including CD14+ monocytes, CD16+ monocytes, CD3+ T-lymphocytes, CD19+ B-lymphocytes, CD4+ helper T-cells, and CD45+ RA memory vs naïve T-cells...
April 27, 2018: Orthopedics
https://www.readbyqxmd.com/read/29698302/is-there-a-cardiotoxicity-associated-with-metallic-head-hip-prostheses-a-cohort-study-in-the-french-national-health-insurance-databases
#11
Marion Lassalle, Sandrine Colas, Annie Rudnichi, Mahmoud Zureik, Rosemary Dray-Spira
BACKGROUND: There are four distinguishable types of THA devices in wide use, as defined by the femoral and acetabular bearing surfaces: metal-on-polyethylene (MoP), ceramic-on-polyethylene (CoP), metal-on-metal (MoM), and ceramic-on-ceramic (CoC). Metallic head THAs (MoP and MoM) can potentially induce cardiac toxicity because cobalt species, generated at the head-neck trunnion, and in the case of MoM devices, at the articular surface as well, can be absorbed systemically. However, studies have provided inconsistent results...
April 23, 2018: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/29696415/medium-term-outcomes-of-the-s-rom-modular-femoral-stem-in-revision-hip-replacement
#12
Jesús Moreta, Iker Uriarte, Xabier Foruria, Ane Loroño, Urko Agirre, Iñaki Jáuregui, José Luis Martínez-de Los Mozos
INTRODUCTION: The objective of this study was to analyse results achieved with the S-ROM modular stem in revision surgery. MATERIALS AND METHODS: A retrospective observational study was conducted from 2007 to 2015 including 51 patients who had a follow-up of ≥ 2 years and complete medical history. The mean age was 66.5 years old (34-87). The main reason for revision was aseptic loosening (38 cases, 74.5%), followed by infection (10, 19.6%), instability (2, 3...
April 25, 2018: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/29691177/association-between-pseudotumor-formation-and-patient-factors-in-metal-on-metal-total-hip-arthroplasty-population
#13
Lindsay T Kleeman, Daniel Goltz, Thorsten M Seyler, Joseph G Mammarappallil, David E Attarian, Samuel S Wellman, Michael P Bolognesi
BACKGROUND: Pseudotumor formation from metal-on-metal (MoM) hip implants is associated with implant revision. The relationship between pseudotumor type and patient outcomes is unknown. METHODS: We retrospectively reviewed patients with an MoM total hip arthroplasty and metal artifact reduction sequence magnetic resonance imaging. Pseudotumors were graded using a validated classification system by a fellowship-trained radiologist. Patient demographics, metal ion levels, and implant survival were analyzed...
March 23, 2018: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29657468/changes-in-serum-chromium-levels-over-12-years-after-metasul-metal-on-metal-total-hip-arthroplasty
#14
Katsuhiko Maezawa, Masahiko Nozawa, Takahito Yuasa, Munehiko Sugimoto, Kazuo Kaneko
We reported the longitudinal changes in serum chromium levels over a minimum of 7 years postoperatively in five men and 25 women with a mean age of 60.3 years after primary unilateral total hip arthroplasty with a Metasul metal-on-metal articulation. The serum chromium ion level showed little variation (0.6-1.2 μg/L) from 2 to 12 years postoperatively in 16/30 patients after unilateral primary Metasul metal-on-metal total hip arthroplasty. On the other hand, the serum chromium level stayed high or showed gradual elevation in 8/30 patients, even though they had well-fixed and well-functioning prostheses...
March 2018: Journal of Orthopaedics
https://www.readbyqxmd.com/read/29656971/long-term-outcomes-after-metal-on-metal-total-hip-arthroplasty-with-a-28-mm-head-a-17-to-23-year-follow-up-study-of-a-previous-report
#15
Jun-Ki Moon, Yeesuk Kim, Kyu-Tae Hwang, Jae-Hyuk Yang, Young-Ha Oh, Young-Ho Kim
BACKGROUND: Second-generation, metal-on-metal total hip arthroplasty (MoM THA) using a 28-mm head has shown favorable results compared with large head MoM THA. The purpose of this study is to evaluate the long-term outcomes of cementless primary MoM THA with a 28-mm head and the incidence of osteolysis using computed tomography. METHODS: A total of 92 patients (53 men and 39 women) who underwent primary cementless MoM THA (114 hips) with a 28-mm head were enrolled in this study...
March 12, 2018: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29652237/failure-of-facet-replacement-system-with-metal-on-metal-bearing-surface-and-subsequent-discovery-of-cobalt-allergy-report-of-2-cases
#16
Matthew L Goodwin, William Ryan Spiker, Darrel S Brodke, Brandon D Lawrence
The aim of this study was to report on 2 patients in whom metal-on-metal (MOM) facet replacements failed, with subsequent positive findings on allergy testing. Motion-preserving devices have been used with limited success when instrumentation is indicated in the mobile spine. MOM-bearing surfaces in orthopedics were developed to increase implant longevity, yet have been associated with numerous adverse outcomes, including local tissue reactions, pseudotumors, metallosis, and the need for revision surgery. Five patients with spinal stenosis and low-grade spondylolisthesis were randomized to undergo facet replacement surgery with the ACADIA facet replacement system at the authors' institution...
April 13, 2018: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/29629579/anatomical-total-shoulder-arthroplasty-in-young-patients-with-osteoarthritis
#17
COMPARATIVE STUDY
M O Gauci, N Bonnevialle, G Moineau, M Baba, G Walch, P Boileau
Aims Controversy about the use of an anatomical total shoulder arthroplasty (aTSA) in young arthritic patients relates to which is the ideal form of fixation for the glenoid component: cemented or cementless. This study aimed to evaluate implant survival of aTSA when used in patients aged < 60 years with primary glenohumeral osteoarthritis (OA), and to compare the survival of cemented all-polyethylene and cementless metal-backed glenoid components. Materials and Methods A total of 69 consecutive aTSAs were performed in 67 patients aged < 60 years with primary glenohumeral OA...
April 1, 2018: Bone & Joint Journal
https://www.readbyqxmd.com/read/29607251/pseudotumor-from-metal-on-metal-total-hip-arthroplasty-causing-unilateral-leg-edema-case-presentation-and-literature-review
#18
REVIEW
Caleb W Grote, Paul C Cowan, David W Anderson, Kimberly J Templeton
Metal-on-metal (MoM) total hip arthroplasty (THA) can be associated with adverse metal reactions, including pseudotumors. This case report describes a 58-year-old female with an MoM THA-related pseudotumor that caused unilateral leg edema from compression of her external iliac vein. After thorough preoperative workup to rule out infection and deep vein thrombosis and consultation with a vascular surgeon, the patient underwent revision THA and excision of her pseudotumor. She had complete resolution of her swelling at 4 years after surgery...
2018: BioResearch Open Access
https://www.readbyqxmd.com/read/29606289/indications-for-mars-mri-in-patients-treated-with-metal-on-metal-hip-resurfacing-arthroplasty
#19
James W Connelly, Vincent P Galea, Sean J Matuszak, Rami Madanat, Orhun Muratoglu, Henrik Malchau
BACKGROUND: Currently, there are no universally accepted guidelines on when to obtain metal artifact reduction sequence magnetic resonance imaging (MARS-MRI) in metal-on-metal (MoM) hip resurfacing arthroplasty (HRA) patients. Our primary aims were to identify which patient and clinical factors are predictive of adverse local tissue reaction (ALTR) and create an algorithm for indicating MARS-MRI in patients with Articular Surface Replacement (ASR) HRA. The secondary aim was to compare our algorithm to existing guidelines on when to perform MARS-MRI in MoM HRA patients...
February 2, 2018: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29601391/corr-insights%C3%A2-what-is-the-long-term-survival-for-primary-tha-with-small-head-metal-on-metal-bearings
#20
Alexander Jaime Grübl
No abstract text is available yet for this article.
March 28, 2018: Clinical Orthopaedics and related Research
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