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https://www.readbyqxmd.com/read/28725970/ion-release-in-ceramic-bearings-for-total-hip-replacement-results-from-an-in-vitro-and-an-in-vivo-study
#1
Jan Philippe Kretzer, Ulrike Mueller, Marcus R Streit, Hartmuth Kiefer, Robert Sonntag, Robert M Streicher, Joern Reinders
INTRODUCTION: Literature on the potential release of trace elements following implantation of Zirconia-platelet toughened alumina (ZPTA) ceramic components is scant. The present study therefore analysed the in vitro and in vivo potential release of ions from ZPTA bearings. MATERIAL AND METHODS: An in vitro and in vivo study was conducted. The in vitro study compared leaching in bovine serum from two groups: ZPTA ceramic heads and Co-28Cr-6Mo alloy heads, both 28-mm diameter...
July 20, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28716026/short-stem-total-hip-arthroplasty-for-osteonecrosis-of-the-femoral-head-in-patients-60%C3%A2-years-or-younger-a-3-to-10-year-follow-up-study
#2
Antonio Capone, Fabrizio Bienati, Stefania Torchia, Daniele Podda, Giuseppe Marongiu
BACKGROUND: In young patients with osteonecrosis of the femoral head (ONFH), short-stem total hip arthroplasty (THA) could allow a potential advantage in preserving metaphyseal bone-stock, when revision surgery might become necessary. However, only a few studies have evaluated the outcome of short-stem THAs in ONFH. We reviewed the prospectively collected data of a cementless partial neck-retaining short-stem with ceramic-on-ceramic bearings in ONFH patients. METHODS: Thirty patients (37 hips) younger than 60 years (mean age at surgery, 51...
July 17, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28710154/outcomes-following-revision-surgery-performed-for-adverse-reactions-to-metal-debris-in-non-metal-on-metal-hip-arthroplasty-patients-analysis-of-185-revisions-from-the-national-joint-registry-for-england-and-wales
#3
G S Matharu, A Judge, D W Murray, H G Pandit
OBJECTIVES: Few studies have assessed outcomes following non-metal-on-metal hip arthroplasty (non-MoMHA) revision surgery performed for adverse reactions to metal debris (ARMD). We assessed outcomes following non-MoMHA revision surgery performed for ARMD, and identified predictors of re-revision. METHODS: We performed a retrospective observational study using data from the National Joint Registry for England and Wales. All non-MoMHAs undergoing revision surgery for ARMD between 2008 and 2014 were included (185 hips in 185 patients)...
July 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28702381/importance-of-preclinical-evaluation-of-wear-in-hip-implant-designs-using-simulator-machines
#4
REVIEW
Rafael Mello Trommer, Márcia Marie Maru
Total hip arthroplasty (THA) is a surgical procedure that involves the replacement of the damaged joint of the hip by an artificial device. Despite the recognized clinical success of hip implants, wear of the articulating surfaces remains as one of the critical issues influencing performance. Common material combinations used in hip designs comprise metal-on-polymer (MoP), ceramic-on-polymer (CoP), metal-on-metal (MoM), and ceramic-on-ceramic (CoC). However, when the design of the hip implant is concerned besides the materials used, several parameters can influence its wear performance...
May 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28695179/inflammatory-pseudotumor-after-ceramic-on-ceramic-total-hip-arthroplasty
#5
Joshua Campbell, Sean Rajaee, Earl Brien, Guy D Paiement
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 wear characteristics, ceramic wear debris is not entirely inert and may lead to the development of adverse local tissue reaction...
June 2017: Arthroplasty Today
https://www.readbyqxmd.com/read/28695178/delayed-diagnosis-of-catastrophic-ceramic-liner-failure-with-resultant-pelvic-discontinuity-and-massive-metallosis
#6
Benjamin A Winston, Ryland P Kagan, Thomas W Huff
With newer-generation ceramic components used in total hip arthroplasty, component fracture is a rare complication. However rare, when ceramic component fracture does occur, prompt identification and revision is necessary as delay can lead to dramatic failure with resultant metallosis as the extremely hard ceramic debris abrades remaining components. We present a case of a 70-year-old woman with ceramic liner fracture and an estimated 10-year delay in intervention with failure resulting in pelvic discontinuity and massive metallosis with associated cutaneous manifestation...
June 2017: Arthroplasty Today
https://www.readbyqxmd.com/read/28689828/influence-of-humeral-head-material-on-wear-performance-in-anatomic-shoulder-joint-arthroplasty
#7
Ulrike Mueller, Steffen Braun, Stefan Schroeder, Mark Schroeder, Robert Sonntag, Sebastian Jaeger, Jan Philippe Kretzer
BACKGROUND: The number of total shoulder arthroplasties has increased in the past years, with encouraging results. However, the survival of anatomic total shoulder arthroplasty (aTSA) is lower compared with that of knee and hip replacements. Wear-associated problems like loosening are well-known causes of long-term failure of aTSA. The main purpose of this study was to investigate the wear behavior of ceramic-polyethylene bearings compared with the standard metal-polyethylene bearings...
July 6, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28668212/fretting-and-corrosion-damage-in-taper-adapter-sleeves-for-ceramic-heads-a-retrieval-study
#8
Daniel W MacDonald, Antonia F Chen, Gwo-Chin Lee, Gregg R Klein, Michael A Mont, Steven M Kurtz, Harold E Cates, Matthew J Kraay, Clare M Rimnac
BACKGROUND: During revision surgery with a well-fixed stem, a titanium sleeve can be used in conjunction with a ceramic head to achieve better stress distribution across the taper surface. In vitro testing suggests that corrosion is not a concern in sleeved ceramic heads; however, little is known about the in vivo fretting corrosion of the sleeves. The purpose of this study was to investigate fretting corrosion in sleeved ceramic heads in retrieved total hip arthroplasties. METHODS: Thirty-seven sleeved ceramic heads were collected during revision...
April 26, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28660436/adventure-sports-and-sexual-freedom-hip-replacement-the-tripolar-hip
#9
James W Pritchett
Certain athletic activities and lifestyles require a completely stable and very mobile hip. Total hip replacement with a natural femoral head size and two mobile-bearing surfaces (i.e., a "tripolar" prosthesis) is the most stable prosthesis. Elegant design and wear-resistant bearing surfaces are the keys to long-term implant survivorship. The hypothesis is that a ceramic-coated tripolar prosthesis using highly cross-linked polyethylene can provide full function and complete stability with low wear. This study sought to determine: (1) patient-reported outcomes, (2) functional outcomes, (3) implant survivorship and complications, and (4) postoperative sexual limitations...
June 28, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28636252/influence-of-analyzed-lubricant-volumes-on-the-amount-and-characteristics-of-generated-wear-particles-from-three-different-types-of-polyethylene-liner-materials
#10
Jana Markhoff, Carmen Zietz, Christian Fabry, Gerhard Fulda, Rainer Bader
The articulating components of artificial joints consist mainly of metals, ceramics, or polymers. Resulting abrasive wear particles can promote osteolysis and aseptic loosening of the endo-prosthetic implants. Ultra-high-molecular-weight-polyethylene is the material used most for bearing couples in total hip replacement. In the present study, three types of polyethylene (PE) liners varying in material composition, i.e., (1) conventional PE (C-PE), (2) sequentially cross-linked PE (SX-PE), (3) cross-linked PE blended with vitamin E (EX-PE) articulating with two types of femoral heads were used...
June 21, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28630848/pseudotumour-complicated-by-implant-loosening-one-year-after-revision-ceramic-on-metal-total-hip-arthroplasty-a-case-report
#11
Devendra Lakhotia, Prashant Kumar
INTRODUCTION: Pseudotumor is not an uncommon complication after total hip arthroplasty (THA). This can occur in relationship to different bearing surfaces of head and liner ranging from soft to hard articulation. There is wide spectrum of presentation from asymptomatic to implant failure. CASE REPORT: We report a case of pseudotumor formation with acetabular cup aseptic loosening after revision ceramic on metal hip arthroplasty. The patient underwent pseudotumor excision and re-revision complex arthroplasty procedure using trabecular metal shell and buttress with ceramic on polyethylene THA...
January 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28625686/the-influence-of-contamination-and-cleaning-on-the-strength-of-modular-head-taper-fixation-in-total-hip-arthroplasty
#12
Annika Krull, Michael M Morlock, Nicholas E Bishop
BACKGROUND: Intraoperative interface contamination of modular head-stem taper junctions of hip implants can lead to poor fixation strength, causing fretting and crevice corrosion or even stem taper fracture. Careful cleaning before assembly should help to reduce these problems. The purpose of this study was to determine the effect of cleaning (with and without drying) contaminated taper interfaces on the taper fixation strength. METHODS: Metal or ceramic heads were impacted onto titanium alloy stem tapers with cleaned or contaminated (fat or saline solution) interfaces...
May 13, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28623650/the-incidence-of-dissociated-liners-in-4-751-consecutive-total-hip-arthroplasties-using-pinnacle-polyethylene-acetabular-liners
#13
Richard J Napier, Owen Diamond, Chris K J O'Neill, Seamus O'Brien, David E Beverland
INTRODUCTION: Acetabular liner dissociation is a complication exclusive to modular designs. We present a single surgeon series of 8 polyethylene liner dissociations with the Pinnacle Acetabular System (DePuy Orthopaedics) from over 4,750 cases. We also present a review of the literature and data from the UK National Joint Registry (NJR) on dissociation in total hip arthroplasty (THA). METHODS: The Pinnacle Acetabular System has been used exclusively by the senior author since April 2003, and to date 5,882 have been implanted (837 ceramic liners, 4,751 polyethylene liners (1,606 Enduron/3,145 Marathon) and 294 metal liners)...
June 14, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28566393/the-evolution-of-an-uncemented-acetabular-component-in-alumina-on-alumina-total-hip-arthroplasty-has-improved-clinical-outcome-a-prospective-comparative-five-to-15-year-follow-up-study
#14
E García-Rey, A Cruz-Pardos, E García-Cimbrelo
AIMS: To determine the effect of a change in design of a cementless ceramic acetabular component in fixation and clinical outcome after total hip arthroplasty PATIENTS AND METHODS: We compared 342 hips (302 patients) operated between 1999 and 2005 with a relatively smooth hydroxyapatite coated acetabular component (group 1), and 337 hips (310 patients) operated between 2006 and 2011 using a similar acetabular component with a macrotexture on the entire outer surface of the component (group 2)...
June 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28566392/mid-term-results-of-the-biolox-delta-ceramic-on-ceramic-total-hip-arthroplasty
#15
Y K Lee, Y C Ha, J-I Yoo, W L Jo, K-C Kim, K H Koo
AIMS: We conducted a prospective study of a delta ceramic total hip arthroplasty (THA) to determine the rate of ceramic fracture, to characterise post-operative noise, and to evaluate the mid-term results and survivorship. PATIENTS AND METHODS: Between March 2009 and March 2011, 274 patients (310 hips) underwent cementless THA using a delta ceramic femoral head and liner. At each follow-up, clinical and radiological outcomes were recorded. A Kaplan-Meier analysis was undertaken to estimate survival...
June 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28566326/retrieval-analysis-of-metal-and-ceramic-femoral-heads-on-a-single-cocr-stem-design
#16
A Di Laura, H Hothi, J Henckel, I Swiatkowska, M H L Liow, Y-M Kwon, J A Skinner, A J Hart
OBJECTIVES: The use of ceramic femoral heads in total hip arthroplasty (THA) has increased due to their proven low bearing wear characteristics. Ceramic femoral heads are also thought to reduce wear and corrosion at the head-stem junction with titanium (Ti) stems when compared with metal heads. We sought to evaluate taper damage of ceramic compared with metal heads when paired with cobalt chromium (CoCr) alloy stems in a single stem design. METHODS: This retrieval study involved 48 total hip arthroplasties (THAs) with CoCr V40 trunnions paired with either CoCr (n = 21) or ceramic (n = 27) heads...
May 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28529109/late-dislocations-after-total-hip-arthroplasty-is-the-bearing-a-factor
#17
Siddharth M Shah, William L Walter, Stephen M Tai, Michelle F Lorimer, Richard N de Steiger
BACKGROUND: Dislocation is a leading cause of revision after primary total hip arthroplasty (THA). Although more common in the first few years after the procedure, dislocation can occur at any time. This study investigated the difference in late dislocation in ceramic-on-ceramic (CoC) bearings compared with metal-on-polyethylene and ceramic-on-polyethylene bearings in THA. METHODS: Data were used from the Australian Orthopaedic Association National Joint Replacement Registry, and the cumulative percent revision for dislocation was estimated using the Kaplan-Meier method for the different bearing surfaces...
April 27, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28511948/computer-navigation-helps-reduce-the-incidence-of-noise-after-ceramic-on-ceramic-total-hip-arthroplasty
#18
Siddharth M Shah, Kamal Deep, Chaiyaporn Siramanakul, Vivek Mahajan, Frederic Picard, David J Allen
BACKGROUND: Noise after ceramic-on-ceramic (CoC) total hip arthroplasty (THA) is a well-recognized problem. Computer navigation has been shown to achieve desired implant orientation. Our aim was (1) to compare the incidence of noise between navigated and conventional CoC THAs and (2) to determine the factors associated with noise. METHODS: All patients undergoing CoC THA between March 2009 and August 2012 were considered for this study. Information regarding hip noise was obtained via telephone or postal interview...
April 21, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28500998/the-impact-of-surface-and-geometry-on-coefficient-of-friction-of-artificial-hip-joints
#19
Dipankar Choudhury, Martin Vrbka, Azuddin Bin Mamat, Ian Stavness, Chanchal K Roy, Rajshree Mootanah, Ivan Krupka
Coefficient of friction (COF) tests were conducted on 28-mm and 36-mm-diameter hip joint prostheses for four different material combinations, with or without the presence of Ultra High Molecular Weight Polyethylene (UHMWPE) particles using a novel pendulum hip simulator. The effects of three micro dimpled arrays on femoral head against a polyethylene and a metallic cup were also investigated. Clearance played a vital role in the COF of ceramic on polyethylene and ceramic on ceramic artificial hip joints. Micro dimpled metallic femoral heads yielded higher COF against a polyethylene cup; however, with metal on metal prostheses the dimpled arrays significantly reduced the COF...
May 6, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28489745/adverse-local-tissue-reaction-after-2-revision-hip-replacements-for-ceramic-liner-fracture-a-case-report
#20
Iulian Antoniac, Mihai Negrusoiu, Mihai Mardare, Claudiu Socoliuc, Ancuţa Zazgyva, Marius Niculescu
INTRODUCTION: In younger patients, ceramic-on-ceramic (CoC) bearing surfaces are usually recommended for total hip replacement (THR) because of their low wear rate and longer expected functional life. Although technical advancements have reduced the risk of ceramic bearings fracture, this complication remains a major concern. CASE DESCRIPTION: We present the case of a 56-year-old patient undergoing 3 revision hip arthroplasties of the right hip due to ceramic liner fractures...
May 2017: Medicine (Baltimore)
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