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https://www.readbyqxmd.com/read/29437054/the-effect-of-bearing-surface-on-risk-of-periprosthetic-joint-infection-in-total-hip-arthroplasty-a-systematic-review-and-meta-analysis
#1
REVIEW
A T Hexter, S M Hislop, G W Blunn, A D Liddle
AIMS: Periprosthetic joint infection (PJI) is a serious complication of total hip arthroplasty (THA). Different bearing surface materials have different surface properties and it has been suggested that the choice of bearing surface may influence the risk of PJI after THA. The objective of this meta-analysis was to compare the rate of PJI between metal-on-polyethylene (MoP), ceramic-on-polyethylene (CoP), and ceramic-on-ceramic (CoC) bearings. PATIENTS AND METHODS: Electronic databases (Medline, Embase, Cochrane library, Web of Science, and Cumulative Index of Nursing and Allied Health Literature) were searched for comparative randomized and observational studies that reported the incidence of PJI for different bearing surfaces...
February 2018: Bone & Joint Journal
https://www.readbyqxmd.com/read/29429884/midterm-prospective-comparative-analysis-of-2-hard-on-hard-bearing-total-hip-arthroplasty-designs
#2
J Ryan Martin, Jason M Jennings, Tyler S Watters, Dan L Levy, Todd M Miner, Douglas A Dennis
INTRODUCTION: Hard-on-hard (HoH) bearing surfaces in total hip arthroplasty (THA) are commonly utilized in younger patients and may decrease mechanical wear compared to polyethylene bearing surfaces. To our knowledge, no study has prospectively compared the 2 most common HoH bearings, ceramic-on-ceramic (CoC) and metal-on-metal (MoM) THA. MATERIALS AND METHODS: We prospectively enrolled 40 patients to undergo an MoM THA and 42 patients to undergo a CoC THA utilizing the same acetabular component...
January 31, 2018: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29429883/total-hip-arthroplasty-bearing-surface-trends-in-the-united-states-from-2007-to-2014-the-rise-of-ceramic-on-polyethylene
#3
Nathanael D Heckmann, Lakshmanan Sivasundaram, Michael D Stefl, Hyunwoo Paco Kang, Eric T Basler, Jay R Lieberman
BACKGROUND: Wear of the bearing surface is a critical element in determining the longevity of a total hip arthroplasty (THA). Over the past decade, concerns related to modern metal-on-metal (MoM) bearings and corrosion at the femoral head-neck interface have influenced surgeon selection of bearing surfaces. The purpose of this study is to analyze trends in THA bearing surface selection from 2007 through 2014 using a large national database. METHODS: The Nationwide Inpatient Sample database was used to extract bearing surface data from patients who underwent a primary THA between 2007 and 2014...
January 9, 2018: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29422350/the-ideal-total-hip-replacement-bearing-surface-in-the-young-patient-%C3%A2-a-prospective-randomized-trial-comparing-alumina-ceramic-on-ceramic-with-ceramic-on-conventional-polyethylene-15-year-follow-up
#4
Amit Atrey, Jesse I Wolfstadt, Nasir Hussain, Amir Khoshbin, Sarah Ward, Emil H Schemitsch, James P Waddell
BACKGROUND: The optimum bearing surface for total hip arthroplasty remains debatable. We have previously published our outcome at 10 years and this represents the 15-year follow-up. METHODS: A total of 58 hips (in 57 patients with a mean age of 42 years) were randomized to receive either ceramic-on-ceramic (CoC) or ceramic-on-polyethylene (CoP) total hip arthroplasty. We prospectively followed for survivorship, functional outcomes (using the Harris Hip Score and the St Michael's Hip Score [SMH]), and radiological outcomes...
December 6, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29401871/resonantly-pumped-eye-safe-er3-yag-sps-hip-ceramic-laser
#5
S Bigotta, L Galecki, A Katz, J Böhmler, S Lemonnier, E Barraud, A Leriche, M Eichhorn
We report for the first time laser action in resonantly-pumped transparent polycrystalline Er3+:YAG ceramic developed through a 2-step approach combining spark plasma sintering and HIP post treatment. Microstructural and spectroscopic properties, as well as the laser performance of large scale 0.5at.% Er:YAG transparent polycrystalline ceramic are discussed. A maximum slope efficiency of ∼31% and optical-optical efficiency of 20% was measured.
February 5, 2018: Optics Express
https://www.readbyqxmd.com/read/29389782/polyethylene-wear-increases-in-liners-articulating-with-scratched-oxidized-zirconium-femoral-heads
#6
Alberto Carli, Chelsea N Koch, Christina I Esposito, Timothy M Wright, Douglas E Padgett
BACKGROUND: Oxidized zirconium (OxZr) femoral heads were introduced in hip arthroplasty to reduce wear of the polyethylene compared with metallic heads and to reduce fracture risk compared with ceramic heads. Severe scratches have been reported on OxZr heads in patients undergoing revision for instability, but whether these scratches contribute to increased acetabular polyethylene wear remains unclear. QUESTIONS/PURPOSES: (1) How is the polyethylene of the acetabular liner affected by damage on the opposing OxZr head? (2) How does damage to the head affect the degree of polyethylene wear? METHODS: We assessed damage and deformation on all retrieved highly crosslinked liners that had articulated against OxZr heads collected at one institution between 2006 and 2013...
February 2018: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/29336858/are-ceramic-bearings-becoming-cost-effective-for-all-patients
#7
Steven M Kurtz, Edmund C Lau, Doruk Baykal, Susan M Odum, Bryan D Springer, Thomas K Fehring
BACKGROUND: The purpose of this study is to analyze whether the cost for ceramic-on-polyethylene (C-PE) and ceramic-on-ceramic (COC) bearings used in primary total hip arthroplasty (THA) was changing over time, and if the cost differential between ceramic bearings and metal-on-polyethylene (M-PE) bearings was approaching the previously published tipping point for cost-effectiveness of $325. METHODS: A total of 245,077 elderly Medicare patients (65+) who underwent primary THA between 2010 and 2015 were identified from the United States Medicare 100% national administrative hospital claims database...
December 21, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29327546/-bone-mineral-density-decreased-is-a-high-risk-factor-for-uncemented-acetabular-cups-migration-in-female-total-hip-arthroplasty-patients
#8
Jia Liu, Jiang Deng, Xiao-Song Han, Lin Xu
OBJECTIVE: To investigate the decrease of bone mineral density in female patients, effects on acetabular displacement. METHODS: From October 2013 to November 2015, a total of 34 patients underwent total hip replacement in the Department of orthopedics, the Third Affiliated Hospital of Zunyi Medical College. The two groups of patients were female and the patients were treated with hip osteoarthritis. Based on the lowest value of preoperative dual energy X-ray bone mineral density (DXA), the patients were divided into normal group and low bone mineral density(-3...
January 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29320923/the-effect-of-seated-pelvic-tilt-on-posterior-edge-loading-in-total-hip-arthroplasty-a-finite-element-investigation
#9
Jim Pierrepont, Long Yang, Jevan Arulampalam, Catherine Stambouzou, Brad Miles, Qing Li
Edge-loading of a ceramic-on-ceramic total hip replacement can lead to reproducible squeaking and revision. A patient's functional acetabular cup orientation, driven by their pelvic tilt, has been shown to be a significant factor in squeaking during hip flexion. The aim of this study was to investigate the effect of seated pelvic tilt on the contact mechanics at the ceramic bearing surface. A finite element model of a ceramic-on-ceramic total hip replacement was created. The cup was orientated at 40° inclination and 15° anteversion relative to the anterior pelvic plane...
January 1, 2018: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/29319895/the-onset-of-fretting-at-the-head-stem-connection-in-hip-arthroplasty-is-affected-by-head-material-and-trunnion-design-under-simulated-corrosion-conditions
#10
Fiachra E Rowan, Amanda Wach, Timothy M Wright, Douglas E Padgett
Mechanically assisted crevice corrosion (MACC) is a mechanism for trunnion damage in total hip arthroplasties (THAs). Retrieval studies have shown reduced MACC-related damage for ceramic heads compared with cobalt-chromium (CoCr) heads. We propose that ceramic heads demonstrate fretting at higher cyclic compressive loads than CoCr heads on titanium alloy trunnions in a simulated corrosion model. A closed electrochemical chamber was used to measure fretting current onset loads for two modern titanium alloy trunnions (Zimmer 12/14 and Stryker V-40) in which trunnion failure has been reported...
January 10, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29303922/bearing-surfaces-for-total-hip-arthroplasty
#11
Paul F Lachiewicz, Lindsay T Kleeman, Thorsten Seyler
Metal-on-highly cross-linked polyethylene is considered the preferred bearing surface for conventional total hip arthroplasty because of its safety profile and excellent results in the first 10 to 15 years of use. However, with younger patient age, activity expectations increase, and the life expectancy of patients with total hip arthroplasty also has increased, so interest remains in other bearing couples. These other options include the use of various ceramic composites for the femoral head on highly cross-linked polyethylene, the so-called second-generation antioxidant polyethylenes, and ceramic acetabular liners...
January 15, 2018: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/29276121/a-randomized-seven-year-study-on-performance-of-the-stemmed-metal-m2a-magnum-and-ceramic-c2a-taper-and-the-resurfacing-recap-hip-implants
#12
Arne Borgwardt, Lotte Borgwardt, Bo Zerahn, Henrik Daugaard, Lise Borgwardt, Søren Ribel-Madsen
BACKGROUND: The large-diameter metal-on-metal hip prostheses were expected to have low wear and reduced dislocation rate compared to the traditional metal-on-polyethylene implants. We compare 2 such prostheses, the ReCap resurfacing implant and the M2a-Magnum stemmed implant, with the C2a ceramic-on-ceramic stemmed implant as to clinical performance, serum concentrations of prosthesis metals, and the durability of the implants in a randomized, controlled clinical trial at 7 years of follow-up...
December 5, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29274479/sub-surface-assessment-of-hydrothermal-ageing-in-zirconia-containing-femoral-heads-for-hip-joint-applications
#13
L Gremillard, J Chevalier, L Martin, T Douillard, S Begand, K Hans, T Oberbach
Zirconia-based materials have been used in orthopaedics since the 1980s, with large success, mainly thanks to transformation toughening. On the other hand, their main drawback is their potential sensitivity to hydrothermal ageing, i.e. tetragonal to monoclinic phase transformation on their surface in the presence of water. Hydrothermal ageing may result in roughness increase and microcracking of the surface. In this article the hydrothermal ageing behaviour of three medical-grade zirconia-based materials is assessed at high temperature and extrapolated to room or body temperature...
December 20, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/29246719/increase-in-benign-squeaking-rate-at-five-year-follow-up-results-of-a-large-diameter-ceramic-on-ceramic-bearing-in-total-hip-arthroplasty
#14
Markus I Goldhofer, Selin Munir, Yadin D Levy, William K Walter, Bernard Zicat, William L Walter
BACKGROUND: Squeaking is an on-going complication with a variable incidence of 0.5%-20.7%. The mechanism of squeaking has not been understood completely and is most likely multifactorial in nature. Previously, we have reported on a squeaking rate of 7.3% at 2 years. Our current results show a substantial increase in the squeaking incidence from 7.3% to 17.4% with the DeltaMotion articulation at the 5-year follow-up. METHODS: Two hundred six total hip arthroplasties with a large ceramic-on-ceramic bearing were performed on 195 patients by 2 senior authors...
December 2, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29229239/in-vivo-postoperative-motion-analysis-of-metal-and-ceramic-bipolar-hip-hemiarthroplasty
#15
Toru Yoshioka, Nobukazu Okimoto, Yoshifumi Fuse, Makoto Kawasaki, Toshiharu Mori, Akinori Sakai, Tokifumi Majima
BACKGROUND: We hypothesized that ceramic bipolar shows less impingement between stem neck and outer head compared to metal bipolar, because of its low coefficient of friction with the acetabulum cartilage. In this paper, a three dimensional (3D) postoperative motion analysis has been used to assess the different motion characteristics of metal and ceramic bipolar hip hemiarthroplasty systems. METHODS: This study was conducted on 40 patients divided in two matched cohorts: 20 patients with metal bipolar and 20 patients with the ceramic bipolar...
December 8, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29212681/ten-year-follow-up-study-of-three-alternative-bearing-surfaces-used-in-total-hip-arthroplasty-in-young-patients-a-prospective-randomised-controlled-trial
#16
RANDOMIZED CONTROLLED TRIAL
A Atrey, S E Ward, A Khoshbin, N Hussain, E Bogoch, E H Schemitsch, J P Waddell
AIMS: We present the ten-year data of a cohort of patients, aged between 18 and 65 years (mean age 52.7 years; 19 to 64), who underwent total hip arthroplasty. Patients were randomised to be treated with a cobalt-chrome (CoCr) femoral head with an ultra-high molecular weight polyethylene (UHMWPE), highly cross-linked polyethylene (XLPE) or ceramic-on-ceramic (CoC) bearing surface. PATIENTS AND METHODS: A total of 102 hips (91 patients) were randomised into the three groups...
December 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/29204484/pseudotumor-in-ceramic-on-metal-total-hip-arthroplasty
#17
Yoni M Blau, Andrew J Meyers, Mauro Giordani, John P Meehan
The increasing demand for total hip arthroplasty (THA) in relatively young, high-demand patients has led to the use of hard-on-hard bearing surfaces. Adverse local tissue reaction/pseudotumor and elevated serum metal ion levels are commonly reported complications encountered in metal-on-metal THA, while audible articulation and rim fracture are reported in ceramic-on-ceramic THA. For this reason, ceramic-on-metal THA was implemented as an ideal hard-on-hard bearing combination. In this report, we describe a case of bilateral simultaneous ceramic-on-metal THA in a 69-year-old woman who presented 7 years postoperatively with unilateral hip pain associated with underlying pseudotumor and elevated serum cobalt and chromium ion levels...
December 2017: Arthroplasty Today
https://www.readbyqxmd.com/read/29204481/corrosion-and-adverse-tissue-reaction-after-modular-unipolar-hip-hemiarthroplasty
#18
Brian F Moore, Paul F Lachiewicz
Modern unipolar hip hemiarthroplasty, commonly used for displaced femoral neck fracture, is now modular, with both a variable length cobalt-chromium adapter-sleeve and large femoral head. Patients with these modular components may develop symptomatic trunnion corrosion, with elevated serum metal levels. We report the case of an 82-year-old woman, 5.5 years after a modular unipolar hip hemiarthroplasty, who presented with a 4-month history of hip pain and limp. Evaluation showed elevated serum cobalt and chromium levels and an acetabular cyst...
December 2017: Arthroplasty Today
https://www.readbyqxmd.com/read/29192727/which-is-the-best-bearing-surface-for-primary-total-hip-replacement-a-new-zealand-joint-registry-study
#19
Paul Sharplin, Michael C Wyatt, Alaistair Rothwell, Chris Frampton, Gary Hooper
INTRODUCTION: We have investigated the revision rates of all bearing surface combinations for primary total hip replacement (THR) registered on the New Zealand Joint Registry (NZJR) to determine which coupling has been the most durable and successful over the last 16 years. METHODS: There were 106,139 primary THRs registered, resulting in 4,960 revisions for any cause. We examined all-cause revision rates, reasons for revision and performed survival analyses. RESULTS: Ceramic-on-highly cross-linked polyethylene (CoPx) had the lowest all-cause revision rate of 0...
December 1, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/29174760/increased-serum-ion-levels-after-ceramic-on-metal-bearing-total-hip-arthroplasty-influence-of-an-asian-lifestyle
#20
Seung-Beom Han, Jong Keon Oh, Woo Young Jang, Nishant Choudhary, Hyun Gon Kim, Won Yong Shon
BACKGROUND: Recent clinical studies have suggested that systemic metal ion levels are significantly elevated at midterm follow-up in patients with ceramic-on-metal (COM) bearing. However, it is not clear whether there is a correlation between patient-related factors including the lifestyle and elevated levels of serum metal ions following COM total hip arthroplasty (THA). METHODS: Serum metal levels were measured in 201 patients (234 hips) including 121 COM patients (140 hips) and 80 non-COM patients (94 hips)...
October 26, 2017: Journal of Arthroplasty
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