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https://www.readbyqxmd.com/read/27871969/oxidized-zirconium-on-ceramic-catastrophic-coupling
#1
Vahit Emre Ozden, Necdet Saglam, Goksel Dikmen, Ismail Remzi Tozun
Oxidized zirconium (Oxinium™; Smith& Nephew, Memphis, TN, USA) articulatedwith polyethylene in total hip arthroplasty (THA) appeared to have the potential to reduce wear dramatically. The thermally oxidized metal zirconium surface is transformedinto ceramic like hard surface that is resistant to abrasion. The exposure of soft zirconium metal under hard coverage surface after the damage of oxidized zirconium femoral head have been described.It occurred following joint dislocation or in situ succeedingdisengagement of polyethylene liner...
November 18, 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/27131405/the-journey-patellofemoral-joint-arthroplasty-a-minimum-5year-follow-up-study
#2
Nathanael Ahearn, Andrew J Metcalfe, Mohammed A Hassaballa, Andrew J Porteous, James R Robinson, James R Murray, John H Newman
BACKGROUND: The Journey patellofemoral joint arthroplasty (PFA) was designed to improve patient outcomes following surgical management of patellofemoral joint osteoarthritis. It is based on the asymmetric trochlear geometry of the Genesis II total knee arthroplasty, with Oxinium components, to provide a reliable treatment option in an often young, high demand group of patients. METHODS: We report the minimum five year functional outcome and survivorship of the Journey PFA performed at our institution between October 2005 and September 2009...
October 2016: Knee
https://www.readbyqxmd.com/read/27067752/tribocorrosion-ceramic-and-oxidized-zirconium-vs-cobalt-chromium-heads-in-total-hip-arthroplasty
#3
Sok Chuen Tan, Adrian C K Lau, Christopher Del Balso, James L Howard, Brent A Lanting, Matthew G Teeter
BACKGROUND: This matched-cohort study aims to compare tribocorrosion between matched ceramic and cobalt-chromium femoral head trunnions and between matched Oxinium and cobalt-chromium femoral head trunnions. Secondary objectives were to investigate whether taper design, depth of trunnion, implantation time, age, body mass index, and gender have an effect on fretting and corrosion. METHODS: All hip prostheses retrieved between 1999 and 2015 at one center were reviewed, giving a total of 52 ceramic heads...
September 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/26709559/extensive-bone-reaction-from-catastrophic-oxidized-zirconium-wear
#4
Adrian J Cassar-Gheiti, Dennis Collins, Tom McCarthy
The use of alternative bearing surfaces for total hip arthroplasty has become popular to minimize wear and increase longevity, especially in young patients. Oxidized zirconium (Oxinium; Smith & Nephew, Memphis, Tennessee) femoral heads were introduced in the past decade for use in total hip arthroplasty. The advantages of oxidized zirconium include less risk of fracture compared with traditional ceramic heads. This case report describes a patient with a history of bilateral avascular necrosis of the femoral head after chemotherapy for acute lymphoblastic leukemia...
January 2016: Orthopedics
https://www.readbyqxmd.com/read/26530646/oxinium-modular-femoral-heads-do-not-reduce-polyethylene-wear-in-cemented-total-hip-arthroplasty-at-five-years-a-randomised-trial-of-120-hips-using-radiostereometric-analysis
#5
RANDOMIZED CONTROLLED TRIAL
B A Jonsson, T Kadar, L I Havelin, K Haugan, B Espehaug, K Indrekvam, O Furnes, G Hallan
We report the five-year outcome of a randomised controlled trial which used radiostereometric analysis (RSA) to assess the influence of surface oxidised zirconium (OxZr, Oxinium) on polyethylene wear in vivo. A total of 120 patients, 85 women and 35 men with a mean age of 70 years (59 to 80) who were scheduled for primary cemented total hip arthroplasty were randomly allocated to four study groups. Patients were blinded to their group assignment and received either a conventional polyethylene (CPE) or a highly cross-linked (HXL) acetabular component of identical design...
November 2015: Bone & Joint Journal
https://www.readbyqxmd.com/read/26318754/titanium-niobium-nitride-knee-implants-are-not-inferior-to-chrome-cobalt-components-for-primary-total-knee-arthroplasty
#6
Emmanuel Thienpont
BACKGROUND: Metal allergy in total knee arthroplasty (TKA) is still a controversial topic. Oxinium, ceramic or titanium niobium nitride (TiNbN) coated implants are available for some knee systems. The hypothesis of this study was that the use of TiNbN-coated components would not lead to inferior results compared to conventional implants and that none of the allergic patients receiving TiNbN-coated implants would require revision for metal allergy. MATERIALS AND METHODS: This study was a retrospective, 2 to 1 matched pairs study with 40 titanium niobium nitride-coated TKA compared with 80 conventional cobalt chrome implants...
December 2015: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/26290343/oxidized-zirconium-head-on-crosslinked-polyethylene-liner-in-total-hip-arthroplasty-a-7-to-12-year-in-vivo-comparative-wear-study
#7
RANDOMIZED CONTROLLED TRIAL
George K Karidakis, Theofilos Karachalios
BACKGROUND: Osteolysis resulting from wear debris production from the bearing surfaces is a major factor limiting long-term survival of hip implants. Oxidized zirconium head on crosslinked polyethylene (XLPE) is a modern bearing coupling. However, midterm in vivo wear data of this coupling are not known. QUESTIONS/PURPOSES: The purpose of this study was to investigate in vivo whether the combination of an oxidized zirconium femoral head on XLPE produces less wear than a ceramic head on XLPE or a ceramic head on conventional polyethylene (CPE) couplings and whether any of these bearing combinations results in higher hip scores...
December 2015: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/26164561/metal-ion-concentrations-in-young-active-patients-following-total-hip-arthroplasty-with-the-use-of-modern-bearing-couples
#8
Denis Nam, James A Keeney, Ryan M Nunley, Staci R Johnson, John C Clohisy, Robert L Barrack
The purpose of this study was to compare whole blood metal ion levels in young, active patients undergoing primary total hip arthroplasty with the use of a cobalt-alloy (ten patients), ceramic (15 patients), or oxinium (11 patients) femoral head and highly crosslinked polyethylene acetabular liner. At 2 years postoperatively, mean cobalt concentrations were 3.0 times higher in the cobalt-alloy cohort versus the ceramic cohort, and 2.3 times higher versus the oxinium cohort (P=0.3-0.5). Titanium levels were consistently elevated at all postoperative time points versus preoperatively in all cohorts...
December 2015: Journal of Arthroplasty
https://www.readbyqxmd.com/read/26122983/low-wear-rates-seen-in-thas-with-highly-crosslinked-polyethylene-at-9-to-14-years-in-patients-younger-than-age-50-years
#9
Kevin L Garvin, Tyler C White, Anand Dusad, Curtis W Hartman, John Martell
BACKGROUND: Patients 50 years or younger are at high risk for wear-related complications of their total hip arthroplasty (THA) because of their generally higher levels of activity. Highly crosslinked polyethylene (HXLPE) is believed to be more durable for this population than conventional polyethylene because of its improved wear; however, limited information is available on the wear of HXLPE in this population, particularly the wear of HXLPE when it articulates with alternative bearings like Oxinium (Smith & Nephew, Memphis, TN, USA)...
December 2015: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/25866822/patients-with-intolerance-reactions-to-total-knee-replacement-combined-assessment-of-allergy-diagnostics-periprosthetic-histology-and-peri-implant-cytokine-expression-pattern
#10
Peter Thomas, Christine von der Helm, Christoph Schopf, Farhad Mazoochian, Lars Frommelt, Hans Gollwitzer, Josef Schneider, Michael Flaig, Veit Krenn, Benjamin Thomas, Burkhard Summer
We performed a combined approach to identify suspected allergy to knee arthroplasty (TKR): patch test (PT), lymphocyte transformation test (LTT), histopathology (overall grading; T- and B-lymphocytes, macrophages, and neutrophils), and semiquantitative Real-time-PCR-based periprosthetic inflammatory mediator analysis (IFNγ, TNFα, IL1-β, IL-2, IL-6, IL-8, IL-10, IL17, and TGFβ). We analyzed 25 TKR patients with yet unexplained complications like pain, effusion, and reduced range of motion. They consisted of 20 patients with proven metal sensitization (11 with PT reactions; 9 with only LTT reactivity)...
2015: BioMed Research International
https://www.readbyqxmd.com/read/25721576/what-is-the-rerevision-rate-after-revising-a-hip-resurfacing-arthroplasty-analysis-from-the-aoanjrr
#11
COMPARATIVE STUDY
James Min-Leong Wong, Yen-Liang Liu, Stephen Graves, Richard de Steiger
BACKGROUND: More than 15,000 primary hip resurfacing arthroplasties have been recorded by the Australian Orthopaedic Association National Joint Replacement Registry (AOANJRR) with 884 primary procedures requiring revision for reasons other than infection, a cumulative percent revision rate at 12 years of 11%. However, few studies have reported the survivorship of these revision procedures. QUESTIONS/PURPOSES: (1) What is the cumulative percent rerevision rate for revision procedures for failed hip resurfacings? (2) Is there a difference in rerevision rate among different types of revision or bearing surfaces? METHODS: The AOANJRR collects data on all primary and revision hip joint arthroplasties performed in Australia and after verification against health department data, checking of unmatched procedures, and subsequent retrieval of unreported procedures is able to obtain an almost complete data set relating to hip arthroplasty in Australia...
November 2015: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/25179448/effect-of-surface-roughness-of-biomaterials-on-staphylococcus-epidermidis-adhesion
#12
Itaru Yoda, Hironobu Koseki, Masato Tomita, Takayuki Shida, Hidehiko Horiuchi, Hideyuki Sakoda, Makoto Osaki
BACKGROUND: Implant-related infections are caused by adhesion of bacteria to the surface of biomaterials. In this in vitro research, we evaluated the ability of Staphylococcus epidermidis (ATCC35984) to adhere to the surface of solid biomaterials at different levels of roughness below 30 nm Ra and investigated the minimum level of roughness required to promote bacterial adhesion on five kinds of biomaterials: oxidized zirconium-niobium alloy (Oxinium), cobalt-chromium-molybdenum alloy (Co-Cr-Mo), titanium alloy (Ti-6Al-4 V), commercially pure titanium (Cp-Ti) and stainless steel (SUS316L), samples of which were categorized into a fine group and a coarse group according to surface roughness...
2014: BMC Microbiology
https://www.readbyqxmd.com/read/24961892/a-randomized-controlled-trial-comparing-oxinium-and-cobalt-chrome-on-standard-and-cross-linked-polyethylene
#13
RANDOMIZED CONTROLLED TRIAL
Zachary A Morison, Sunit Patil, Habeeb A Khan, Earl R Bogoch, Emil H Schemitsch, James P Waddell
The purpose of the investigation was to assess the clinical and radiographic outcomes in four bearing surfaces. Eighty patients (91 hips) undergoing total hip arthroplasty between 2004 and 2007 were randomized to one of four bearing surfaces: (1) cobalt-chrome (CoCr) and ultra-high molecular weight polyethylene (UHMWPE); (2) CoCr and XLPE; (3) Oxinium and UHMWPE; and (4) Oxinium and XLPE. The mean follow-up for this study was 6.8 years. There were no significant differences in clinical outcomes. The linear wear rates for the four groups were 0...
September 2014: Journal of Arthroplasty
https://www.readbyqxmd.com/read/24781619/total-knee-arthroplasty-with-an-oxidised-zirconium-femoral-component-a-5-year-follow-up-study
#14
Derek H Park, Julian Leong, Stephen J Palmer
PURPOSE: To report the early results of the Oxinium Genesis II prosthesis with an oxidised zirconium femoral component in 55 patients. METHODS: 71 knees in 21 men and 34 women aged 32 to 75 (mean, 55) years were evaluated; 16 of the patients had bilateral staged total knee replacements with a mean interval of 9 (range, 6-16) months between surgeries. The indications for surgery included osteoarthritis (n=57), rheumatoid arthritis (n=13) and revision from a unicompartmental knee replacement for osteoarthritis (n=1)...
April 2014: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/24269206/bioinertness-and-fracture-toughness-evaluation-of-the-monoclinic-zirconia-surface-film-of-oxinium%C3%A2-femoral-head-by-raman-and-cathodoluminescence-spectroscopy
#15
Andrea Leto, Wenliang Zhu, Masaaki Matsubara, Giuseppe Pezzotti
Raman and cathodoluminescence spectroscopic methods were employed for clarifying important stoichiometric and mechanical properties so far missing in the specification of the physical origin of the structural behavior of Oxinium™ femoral head components. Spectroscopy proved helpful in rationalizing the actual physical and chemical reasons behind the mechanical integrity of the ceramic-film/metal-substrate interface, which is responsible for both the good adherence and the surface durability reported in prosthetic applications of Oxinium™ components...
March 2014: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/24165329/advanced-wear-of-an-oxinium%C3%A2-femoral-head-implant-following-polyethylene-liner-dislocation
#16
H Tribe, S Malek, J Stammers, V Ranawat, J A Skinner
Oxinium™ (Smith & Nephew, Memphis, TN, US) has been used in hip arthroplasty since 2003. The surface coating is hard and provides low wear rates but if this surface coating is damaged, the soft metal core is at risk of accelerated wear. Previous reports have described accelerated wear following intra and postoperative hip dislocation. We report a case of advanced wear of an in situ Oxinium™ femoral head implant following a cracked acetabular liner. The liner had disengaged from the titanium shell, allowing the Oxinium™ head to articulate directly with the shell...
November 2013: Annals of the Royal College of Surgeons of England
https://www.readbyqxmd.com/read/24143100/adherence-ability-of-staphylococcus-epidermidis-on-prosthetic-biomaterials-an-in-vitro-study
#17
COMPARATIVE STUDY
Takayuki Shida, Hironobu Koseki, Itaru Yoda, Hidehiko Horiuchi, Hideyuki Sakoda, Makoto Osaki
Bacterial adhesion to the surface of biomaterials is an essential step in the pathogenesis of implant-related infections. In this in vitro research, we evaluated the ability of Staphylococcus epidermidis to adhere to the surface of solid biomaterials, including oxidized zirconium-niobium alloy (Oxinium), cobalt-chromium-molybdenum alloy, titanium alloy, commercially pure titanium, and stainless steel, and performed a biomaterial-to-biomaterial comparison. The test specimens were physically analyzed to quantitatively determine the viable adherent density of the S...
2013: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/24070691/oxinium-femoral-head-damage-generated-by-a-metallic-foreign-body-within-the-polyethylene-cup-following-recurrent-dislocation-episodes
#18
E Gibon, C Scemama, B David, M Hamadouche
Oxinium femoral heads are supposed to be more scratch-resistant thanks to their oxidized layer. However, damages to this thin layer can jeopardize implant's properties. Following revision total hip arthroplasty performed for recurrent posterior dislocations, the Oxinium femoral head initially implanted was observed to be dramatically damaged. A metallic foreign body from a trochanteric fixation wire was found within the polyethylene cup. Only few cases of damaged Oxinium femoral heads have been reported and all were related to either dislocation or reduction of THA...
November 2013: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/22371534/the-influence-of-acetabular-inclination-angle-on-the-penetration-of-polyethylene-and-migration-of-the-acetabular-component-a-prospective-radiostereometric-study-on-cemented-acetabular-components
#19
RANDOMIZED CONTROLLED TRIAL
T Kadar, O Furnes, A Aamodt, K Indrekvam, L I Havelin, K Haugan, B Espehaug, G Hallan
In this prospective study we studied the effect of the inclination angle of the acetabular component on polyethylene wear and component migration in cemented acetabular sockets using radiostereometric analysis. A total of 120 patients received either a cemented Reflection All-Poly ultra-high-molecular-weight polyethylene or a cemented Reflection All-Poly highly cross-linked polyethylene acetabular component, combined with either cobalt-chrome or Oxinium femoral heads. Femoral head penetration and migration of the acetabular component were assessed with repeated radiostereometric analysis for two years...
March 2012: Journal of Bone and Joint Surgery. British Volume
https://www.readbyqxmd.com/read/22187849/revision-of-a-tibial-baseplate-using-a-customized-oxinium-component-in-a-case-of-suspected-metal-allergy-a-case-report
#20
Nick Van Opstal, Frank Verheyden
Materials currently used for total knee arthroplasty (TKA) are well known for their good biocompatibility, but corrosion of the implant and metal ion release may elicit an immune response in the periprosthetic tissue. Its role in the outcome of the implant remains a subject of discussion. Metal sensitivity after joint replacement is frequent, but few patients exhibit symptoms. Nickel, cobalt and chromium are the most common sensitizers, but allergic reactions to titanium and vanadium have also been described...
October 2011: Acta Orthopaedica Belgica
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