Greater Wear Reduction Seen With Ceramic-on-poly Vs Metal-on

  • Wear Outcomes of a Metal on Metal Disc Arthroplasty – A ...

    The difference may be due to MOM vs MOP and the differences in the design of THA. Along similar lines we compared the cervical implants - metal on metal (ball on trough) test case with a metal on poly (ball on socket) design[14]. Metal on metal combination led to a decrease in volumetric wear by ~64 times, using the ISO test protocol.

    Read More
  • Inflammatory pseudotumor after ceramic-on-ceramic total ...

    Jun 01, 2017· In addition, those with the higher wear rates showed a greater degree of macrophage response with phagocytized metal debris and a lower degree of lymphocytic response . The formation of pseudotumors and ALTR in MoM articulations was initially quoted to be as low as 1%-4% [8] , [11] ; however, new data show a prevalence of 36%-61% in well ...

    Read More
  • METALS vs. PLASTICS: And the winner is? | designnews.com

    Oct 09, 1995· "You may see demonstration hardware as a result of the Phase I work in a couple of years," says Ron Hughes, manager of technical affairs at Rouge Steel Co., Dearborn, MI. "It probably won't appear on the road for about five years," adds Hughes, who also chairs the AISI weight-reduction …

    Read More
  • (PDF) Cost Analysis of Ceramic Heads in Primary Total Hip ...

    each procedure using the populations of patients who had undergone total hip. replacements with CoP implants (n = 8,281) or MoP implants (n = 12,117). In the fi rst method, an unadjusted cost ...

    Read More
  • Analyzing the k-factor in sheet metal bending

    Sep 12, 2018· If you know a material’s tensile reduction value, you can perform a rough estimate of the minimum bend radius, depending on your material thickness. For the minimum bend radius in 0.25-in.-thick material or greater, you can use the following formula: [(50/Tensile reduction of …

    Read More
  • Hip Replacement Materials Best to Worst - Bioxcellerator

    Explore stem cells treatment before getting a hip replacement as a last resort. Prior to invasive surgery, doctors will recommend everything, from physical therapy to stem cell treatments, in order to see if a hip replacement can be avoided. Some patients, however, simply have too much wear-and-tear on a hip.

    Read More
  • New (Positive) Ceramic-on-Poly Data | Orthopedics This Week

    Jan 09, 2018· From 2007 to 2014, the use of Ceramic-on-Poly bearing surfaces increased from 11.1% of cases in 2007 to 50.8% of cases in 2014. In 2014, Ceramic-on-Poly utilization surpassed Metal-on-Poly which represented 42.1% of bearing surfaces that year.”

    Read More
  • Look Out for Metal-to-Metal Wear | Plastics Technology

    Jun 07, 2010· So the question isn’t if wear will occur, but how fast. Wear in extruders generally results in an increase in the clearance between screw flight and barrel. Most often, this occurs toward the end of the compression section of the screw (see Fig. 1). This type of wear is more likely to occur when the screw has a high compression ratio.

    Read More
  • Different Types of Hip Replacement Implants

    Apr 25, 2017· Ceramic components are said to be advanced when it comes to extending the lifetime of the implant. Stryker says this ceramic acetabular part “demonstrated significantly lower wear versus conventional plastic-on-metal, or metal-on-metal, joint systems in the laboratory.” Component is made from ceramic material with a titanium shell.

    Read More
  • ceramic | Earl's View

    Greater wear reduction seen with ceramic-on-poly vs metal-on-poly hips | Orthopedics Today. Greater wear reduction seen with ceramic-on-poly vs metal-on-poly … Continue reading → Hip implant materials swing sharply to polyethylene | PlasticsToday.com July 15, 2012

    Read More
  • Greater wear reduction seen with ceramic-on-poly vs metal ...

    Oct 01, 2012· Early results showed that ceramic heads led to reduced wear rates for the two prostheses compared to metal heads. True linear wear rates for the Crossfire with ceramic heads were 0.075 mm/year...

    Read More
  • WHICH LOCTITE TO USE

    Product Guide and as you can see all of the temp. ranges are -65 to 300 degrees F., except 272 red which is up to 450 degrees. The cure times vary except they all require 24 hours to cure fully. RCGF Aero Products www.zrcgf.com Tel: 905.688.3947 Page 1 of 2 …

    Read More
  • Oxinium femoral head damage generated by a metallic ...

    Nov 01, 2013· Moreover, as the Oxinium layer is approximately 4 μm to 5 μm, a scratch deeper than these values make the scratch area like a Metal-on-Polyethylene bearing surface. Our deepest scratch was 10 μm. Interestingly, Jaffe et al. tested wear rates of retrieved damaged femoral head in hip stimulator. They showed a dramatically 50-fold increase wear ...

    Read More
  • Inflammatory pseudotumor after ceramic-on-ceramic total ...

    Feb 01, 2017· We present a unique case of a symptomatic adverse local tissue reaction in a patient with a ceramic-on-ceramic total hip bearing surface. To our knowledge, this pathological finding has not yet been described in a ceramic-on-ceramic articulation without a cobalt-chromium alloy trunnion or modular neck component as a source of metal wear. We conclude that despite its mechanical mostly benign ...

    Read More
  • Comparison of ceramic-on-ceramic bearing vs ceramic-on ...

    Nov 27, 2019· Traditional metal-on-polyethylene (MoP) has the risk of polyethylene wear and mechanically activated corrosion which many increase the risk of revision [ 3 ]. Ceramic-on-ceramic (CoC) has the advantage of low levels of wear and is a popular choice of bearing surface for younger patients [ 4 ].

    Read More
  • Hip Arthroplasty - Medical Clinical Policy Bulletins | Aetna

    Qu X, Huang X, Dai K. Metal-on-metal or metal-on-polyethylene for total hip arthroplasty: A meta-analysis of prospective randomized studies. Arch Orthop Trauma Surg. 2011;131(11):1573-1583. Quintana JM, Azkarate J, Goenaga JI, et al. Evaluation of the appropriateness of the hip joint replacement techniques.

    Read More
  • Porcelain-fused-to-metal (PFM) crowns | High noble ...

    e) Greater tooth reduction is needed. Porcelain-fused-to-metal dental crowns require a greater amount of tooth reduction (trimming) than their all-metal counterparts. For example, metal crowns can be as thin as 1.5 mm on their chewing surface whereas PFM crowns need to be at least 2 mm thick.

    Read More
  • MR Imaging of Hip Arthroplasty Implants | RadioGraphics

    Jul 14, 2014· MR imaging can be used to accurately identify and characterize the gluteus medius and gluteus minimus after hip arthroplasty ( 7 ). In tendinosis, MR imaging demonstrates thickening and hyperintensity of the tendon. Tendon tears may be classified …

    Read More
  • Galling - Wikipedia

    Galling is adhesive wear that is caused by microscopic transfer of material between metallic surfaces, during transverse motion (sliding). It occurs frequently whenever metal surfaces are in contact, sliding against each other, especially with poor lubrication. It often occurs in high load, low speed applications, but also in high-speed ...

    Read More
  • Greater wear reduction seen with ceramic-on-poly vs metal ...

    Oct 20, 2012· Greater wear reduction seen with ceramic-on-poly vs metal-on-poly hips | Orthopedics Today. Greater wear reduction seen with ceramic-on-poly vs metal-on-poly hips Researchers found ceramic heads on highly crosslinked polyethylene reduced wear 30% to 40%. Orthopedics Today, October 2012

    Read More
  • Clinical and Hip Simulator Comparisons of Ceramic-on ...

    The use of ceramic femoral heads has been suggested as a way to reduce the wear of the UHMWPE acetabular components [59,60]. Laboratory studies …

    Read More
  • Molybdenum - Wikipedia

    Molybdenum is a chemical element with the symbol Mo and atomic number 42. The name is from Neo-Latin molybdaenum, which is based on Ancient Greek Μόλυβδος molybdos, meaning lead, since its ores were confused with lead ores. Molybdenum minerals have been known throughout history, but the element was discovered (in the sense of differentiating it as a new entity from the mineral salts of ...

    Read More
  • Ceramic on Ceramic Articulating Surfaces: A New Standard ...

    Dec 23, 2013· As we see these metal-on-polyethylenes getting trunionosis, more accelerated wear, pseudotumors, the trend is going away from metal heads. When you’re comparing CoC and ceramic-poly (CoPoly) the cost is almost identical and in some cases of enhanced porous coatings the non-ceramic-ceramic hips are actually more expensive at our institution ...

    Read More
  • Oxinium femoral head damage generated by a metallic ...

    Nov 01, 2013· Introduction. Decreasing wear debris in total joint replacements is an ongoing challenge. New bearing surfaces are now available for surgeons. Among them, oxidized zirconium (Oxinium) has shown in vitro its superiority at decreasing ultra high molecular weight polyethylene (UHMWPE) wear in total knee arthroplasty (TKA) compared to cobalt-chromium (Co-Cr) component.

    Read More
  • Hip Arthroplasty - Radsource

    The imaging spectrum of peri-articular inflammatory masses following metal-on-metal hip resurfacing. Skel Rad 2008, 37:715-722. 18 Firkins PJ, Tipper H, Saadatzadeh MR, et al. Quantitative analysis of wear and wear debris from metal-on-metal hip prostheses tested in a physiological hip joint simulator. Biom mater Eng 2001, 11:143-157.

    Read More
  • Ceramic on crosslinked polyethylene in total hip ...

    The wear rates in this study are lower than previously reported metal-on-polyethylene wear rates and are consistent with the lowest reported in vivo ceramic-on-polyethylene wear rates.

    Read More
  • Ceramic-on-Polyethylene: The Experience of the Ranawat ...

    However, the mean wear rate was 0.01 +/- 0.07 mm/y for the Marathon group, which represents a 95% reduction compared with the mean wear rate of 0.19 +/- 0.12 mm/y for the Enduron group.

    Read More
  • MR Imaging with Metal-suppression Sequences for Evaluation ...

    Nov 20, 2015· In patients with cobalt-chromium–based metal-on-metal arthroplasty alloys, a number of studies (26,27) indicate that the degree of metal-on-metal wear can be evaluated by measuring serum chromium and cobalt concentrations. Serum chromium levels greater than 17 µg/L and serum cobalt levels greater than 19 µg/L appear to be associated with ...

    Read More
  • Materials for Hip Prostheses: A Review of Wear and Loading ...

    Feb 05, 2019· 1.1. History. Since its first application, the development of design and materials of hip prosthesis continuously progressed. Its development is one of the most challenging issues of the century in the field of implant technology [].Several materials were used for this scope: glass, polymers, metal alloys, ceramics, composites, etc., trying to combine biocompatibility and fatigue resistance ...

    Read More
  • Massive Pseudotumor in a Ceramic-Poly Revision ...

    Jun 30, 2014· [14,15,16,18,19] This is based on the wear debris phenomenon seen with metal-on-metal bearings over the last decade. [20,22,24,27,28] The toxic reactive synovitis seen with this bearing can cause effusion, pain, and, in some cases, pseudotumor formation when the bearing couple is improperly designed or mated.

    Read More
  • Current and Future Bearing Surfaces in Total Hip Arthroplasty

    Ceramic on Poly and Metal on Poly Semlitsch et al 20:1 reduction in wear Oonoshi et al 1989 CoP 0.1mm/yr MoP 0.25mm/yr Wroblewski et al Head penetration of 0.019 mm/yr at 17 yr followup C on XLPE Demonstrated in wear simulator …

    Read More
  • Joint Replacement: Implant Bearing Surface Materials | HSS

    Mar 02, 2020· Metal-on-metal bearings Early problems. Metal-on-metal bearings were among the first to be used in total hip arthroplasty and found clinical success in the 1960s and 1970s. Metal-on-metal hip joints fell out of favor by most orthopaedic surgeons once the clinical results with metal-on-polyethylene joints proved superior.

    Read More
  • Metal-on-Metal Total Hip Arthroplasty - ScienceDirect

    Oct 01, 2008· Significant reduction in wear 6, 7, 8 and subsequent reduction in osteolysis 6, 7, 8 have been reported in a number of published studies. A wear analysis of 118 retrieved second-generation MOM implants by Sieber et al [7] demonstrated a linear wear rate of 5 μ m per year after the initial wear-in phase.

    Read More
  • Ceramic Versus Metal Femoral Heads in Combination With ...

    Dec 01, 2011· Weber 7 found a significantly better wear behavior, with subsequent clinical survival rate for ceramic on PE vs metal on PE after ten years. Zichner 6 had similar results after approximately 6 years. In this framework, we posed the question whether ceramic and metal ball heads still resulted in similar clinical outcome regarding PE wear after ...

    Read More

Contact us

  • Address: Building 8, 098, Chuansha Road, Pudong New Area, Shanghai
  • E-mail: [email protected]

Customer Cases