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Ceramic hip

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https://www.readbyqxmd.com/read/28065626/choosing-a-femoral-head-a-survey-study-of-academic-adult-reconstructive-surgeons
#1
Sumon Nandi, Matthew S Austin
BACKGROUND: Our aim was to examine how academic adult reconstructive surgeons have interpreted evidence on femoral head material in total hip arthroplasty (THA). METHODS: A 16-question survey to evaluate attitudes toward ceramic and cobalt-chrome head use was emailed to 274 faculty at 42 US adult reconstruction fellowship programs. RESULTS: With 116 respondents, the response rate was 42.2%. Faculty use ceramic heads 72.9% of the time. The most common reason why respondents do not use ceramic heads is cost (44...
December 18, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28057394/metal-ion-levels-in-young-active-patients-receiving-a-modular-dual-mobility-total-hip-arthroplasty
#2
Denis Nam, Rondek Salih, Katherine M Brown, Ryan M Nunley, Robert L Barrack
BACKGROUND: Dual mobility total hip arthroplasty (THA) components improve stability, yet use of a modular cobalt alloy acetabular liner may be associated with metal ion release. This study's purpose was to measure blood metal ion levels in young, active patients receiving a dual mobility THA prosthesis. METHODS: This is a prospective study of young, active patients undergoing primary THA. Twenty-six patients received a 22-mm cobalt alloy (n = 10) or a 28-mm ceramic (n = 16) femoral head, a modular cobalt chrome acetabular liner, with a highly cross-linked polyethylene insert (dual mobility)...
December 21, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28053256/high-prevalence-of-noise-following-delta-ceramic-on-ceramic-total-hip-arthroplasty
#3
P P Salo, P B Honkanen, I Ivanova, A Reito, J Pajamäki, A Eskelinen
AIMS: We evaluated the short-term functional outcome and prevalence of bearing-specific generation of audible noise in 301 patients (336 hips) operated on with fourth generation (Delta) medium diameter head, ceramic-on-ceramic (CoC) total hip arthroplasties (THAs). PATIENTS AND METHODS: There were 191 female (63%) and 110 male patients (37%) with a mean age of 61 years (29 to 78) and mean follow-up of 2.1 years (1.3 to 3.4). Patients completed three questionnaires: Oxford Hip Score (OHS), Research and Development 36-item health survey (RAND-36) and a noise-specific symptom questionnaire...
January 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28043037/stem-taper-mismatch-has-a-critical-effect-on-ceramic-head-fracture-risk-in-modular-hip-arthroplasty
#4
Julian Gührs, Mandy Körner, Maren Bechstedt, Annika Krull, Michael M Morlock
BACKGROUND: Modular total hip prostheses with ceramic heads are well established in orthopedic surgery and widely used. With the variety of different manufacturers and available designs, components are at risk for mismatch. Several case studies show the potentially devastating effects of mismatch. METHODS: The aim of this study was to investigate the outcome of one arbitrary component mismatch with commercially available components that appear to provide a stable fixation during assembly...
December 16, 2016: Clinical Biomechanics
https://www.readbyqxmd.com/read/28040609/in-situ-observation-of-lubricant-film-formation-in-thr-considering-real-conformity-the-effect-of-diameter-clearance-and-material
#5
D Nečas, M Vrbka, F Urban, J Gallo, I Křupka, M Hartl
The aim of the present study is to provide an analysis of protein film formation in hip joint replacements considering real conformity based on in situ observation of the contact zone. The main attention is focused on the effect of implant nominal diameter, diametric clearance and material. For this purpose, a pendulum hip joint simulator equipped with electromagnetic motors enabling to apply continuous swinging flexion-extension motion was employed. The experimental configuration consists of femoral component (CoCrMo, BIOLOX®forte, BIOLOX®delta) and acetabular cup from optical glass fabricated according to the dimensions of real cups...
December 23, 2016: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28012723/incidence-of-ceramic-liner-malseating-after-ceramic-on-ceramic-total-hip-arthroplasty-associated-with-osteolysis-a-5-to-15-year-follow-up-study
#6
Yoshitoshi Higuchi, Yukiharu Hasegawa, Daigo Komatsu, Taisuke Seki, Naoki Ishiguro
BACKGROUND: The aim of our study was to evaluate the clinical and radiographic outcomes of malseating of the acetabular liner in ceramic-on-ceramic total hip arthroplasty (THA). METHODS: Outcomes for 160 ceramic-on-ceramic THAs, contributed by 116 women and 39 men, were evaluated. Clinical and radiographic measurements were obtained over a 5- to 15-year follow-up for analysis. RESULTS: Liner malseating was identified in 20% of cases. Outcomes for 32 cases with liner malseating (group A) were compared to outcomes for 128 joints with correct liner seating (group B)...
December 1, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28009420/clinical-outcomes-of-ceramicized-ball-heads-in-total-hip-replacement-bearings-a-literature-review
#7
Corrado Piconi, Vincenzo De Santis, Giulio Maccauro
BACKGROUND: Metallic ball heads for total hip replacement (THR) bearings with ceramicized surfaces were introduced in orthopedics during the second half of the 1980s, with the aim of decreasing the wear of polyethylene cups. METHODS: An analysis was made of the literature regarding outcomes for metallic ball heads with ceramicized surfaces now in clinical use (TiN, TiNbN, ZrN, monoclinic ZrO2), as well as carbon coatings (pyrolytic carbon, diamond-like carbon) and silicon nitride as coatings in ball heads for THR bearings...
December 6, 2016: Journal of Applied Biomaterials & Functional Materials
https://www.readbyqxmd.com/read/27966180/-endoprostheses-in-the-elderly-biomaterials-implant-selection-and-fixation-technique
#8
M M Morlock, M Jäger
The replacement of hip and knee joints is one of the greatest success stories in orthopedics. Due to continuous improvement of biomaterials and implant design, patient-associated problems are now mostly multifactorial and only rarely caused by the implant. Abrasion was significantly reduced by the introduction of highly cross-linked polyethylene (PE), antioxidant stabilized PE, new ceramics and the development of ceramic and protective surfaces. It is assumed that further reduction of frictional resistance will not lead to a significantly better clinical result: however, the problem of periprosthetic infections and implant-related incompatibility is still unsolved and remains challenging for biomaterial research...
December 13, 2016: Der Orthopäde
https://www.readbyqxmd.com/read/27955657/adverse-reactions-to-metal-debris-occur-with-all-types-of-hip-replacement-not-just-metal-on-metal-hips-a-retrospective-observational-study-of-3340-revisions-for-adverse-reactions-to-metal-debris-from-the-national-joint-registry-for-england-wales-northern-ireland
#9
Gulraj S Matharu, Hemant G Pandit, David W Murray, Andrew Judge
BACKGROUND: Adverse reactions to metal debris (ARMD) have resulted in the high short-term failure rates observed with metal-on-metal hip replacements. ARMD has recently been reported in non-metal-on-metal total hip replacements (non-MoM THRs) in a number of small cohort studies. However the true magnitude of this complication in non-MoM THRs remains unknown. We used a nationwide database to determine the risk of ARMD revision in all non-MoM THRs, and compared patient and surgical factors associated with ARMD revision between non-MoM and MoM hips...
December 13, 2016: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/27919579/alumina-delta-on-alumina-delta-bearing-in-cementless-total-hip-arthroplasty-in-patients-aged-50-years
#10
Young-Hoo Kim, Jang-Won Park, Jun-Shik Kim
BACKGROUND: There are limited studies to evaluate long-term clinical and radiographic outcomes of alumina delta ceramic-on-ceramic bearings in cementless total hip arthroplasty (THA). The purpose of this study was to evaluate the clinical and radiographic results, prevalence of osteolysis, squeaking, and fracture of ceramic material associated with the use of the alumina delta ceramic-on-alumina delta ceramic bearing in cementless THA in patients aged <50 years. METHODS: We reviewed the cases of 277 patients (334 hips) who underwent a cementless THA using alumina delta ceramic-on-alumina delta ceramic when they were 50 years or younger at the time of surgery...
December 2, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/27912168/tensor-resolved-raman-spectroscopic-analysis-of-wear-induced-residual-stress-fields-in-long-term-alumina-hip-joint-retrievals
#11
Wenliang Zhu, Elia Marin, Nobuhiko Sugano, Giuseppe Pezzotti
Polarized Raman spectroscopy was applied to evaluate the full set of stress tensor components in the wear-induced residual stress fields on two long-term (>20 y) (monolithic) alumina (Al2O3) femoral head retrievals coupled to polyethylene liners. The tensor-resolved residual stress state stored onto the Al2O3 ceramic head surface was found to retain "memory" of the sliding conditions in vivo and of the wear-induced consumption of the polyethylene counterpart. The evolution of tensor-resolved residual stress motifs in the three-dimensional space was examined, and key features, including exceptionally high shear stresses in one case, were uncovered...
February 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/27911456/mid-term-results-of-recap-magnum-taperloc-metal-on-metal-total-hip-arthroplasty-with-mean-follow-up-of-7-1-years
#12
Antonios A Koutalos, Aristotelis Kourtis, Ian C Clarke, Evert J Smith
INTRODUCTION: Despite enthusiasm for metal-on-metal bearings, disappointing short- to mid-term outcomes has all but halted the use of this bearing articulation. This review presents mid-term results for the ReCap Magnum total hip replacement. PATIENTS AND METHODS: This prospective study evaluated 79 ReCap/Magnum/Taperloc total hip replacements with mean follow-up of 7.1 (range 3.7-9.2) years. 43 were female and 36 male. Metal ions were measured and radiographic measurement included a 'margin of safety' angle to quantify risk of edge loading...
December 2, 2016: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/27910817/on-the-molecular-interaction-between-femoral-heads-and-polyethylene-liners-in-artificial-hip-joints-phenomenology-and-molecular-scale-phenomena
#13
Giuseppe Pezzotti, B Sonny Bal, Elisa Casagrande, Nobuhiko Sugano, Bryan J McEntire, Wenliang Zhu, Leonardo Puppulin
The chemical interaction of femoral heads with polyethylene liners is an important new area of research in total hip arthroplasty (THA) as a consequence of an unabating quest for elongated artificial joint lifetimes. It is a topic that goes beyond simple mechanical behavior or wear. It seeks to describe the prosthetic device as a whole by adding chemical considerations to mechanics and abrasion. One of the poorly understood chemical interactions is oxygen affinity of the femoral heads. While oxygen unavoidably diffuses into the non-crystalline enclaves of the polyethylene liner as a result of its contact with the tribolayer, a ceramic femoral head can either attract or release oxygen due to its tribochemical interactions...
December 2, 2016: Biomedical Materials
https://www.readbyqxmd.com/read/27892564/zirconia-based-dental-ceramics-structure-mechanical-properties-biocompatibility-and-applications
#14
Chandkiram Gautam, Jarin Joyner, Amarendra Gautam, Jitendra Rao, Robert Vajtai
Zirconia (ZrO2) based dental ceramics have been considered to be advantageous materials with adequate mechanical properties for the manufacturing of medical devices. Due to its very high compression strength of 2000 MPa, ZrO2 can resist differing mechanical environments. During the crack propagation on the application of stress on the surface of ZrO2, a crystalline modification diminishes the propagation of cracks. In addition, zirconia's biocompatibility has been studied in vivo, leading to the observation of no adverse response upon the insertion of ZrO2 samples into the bone or muscle...
December 6, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/27889306/return-to-sporting-activity-after-total-hip-arthroplasty-a-survey-of-members-of-the-british-hip-society
#15
Benjamin M Bradley, Stephen J Moul, Fintan J Doyle, Matthew J Wilson
BACKGROUND: Total hip arthroplasty is increasingly performed in younger, more active patients. Thirty-five percent of patients are involved in sports preoperatively, and a desire to return to sporting activity is now a major expectation. Sporting activity potentially risks premature failure of the implant, and there is no consensus or guidelines among British or European surgeons performing total hip arthroplasty in sporting patients. METHODS: The current practice of British Hip Society members was explored through a Web-based survey...
September 28, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/27876256/do-changes-in-the-production-process-affect-the-outcome-of-ceramic-liners-a-3-year-follow-up-study
#16
Tom Schmidt-Braekling, Lisa Renner, Douglas N Mintz, Wenzel Waldstein, Yoshimi Endo, Friedrich Boettner
BACKGROUND: In 2011, the current liner was withdrawn from the market because of the potential risk for liner fracture secondary to increased pressures used to assemble the metal locking ring. The present study provides a short-term follow-up of patients with this implant. METHODS: We retrospectively evaluated 63 consecutive hips in 53 patients operated by a single surgeon using a recalled ceramic-on-ceramic bearing. There were 30 women and 23 men with an average age of 50...
October 20, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/27871969/oxidized-zirconium-on-ceramic-catastrophic-coupling
#17
V E Ozden, N Saglam, G Dikmen, I R Tozun
Oxidized zirconium (Oxinium™; Smith & Nephew, Memphis, TN, USA) articulated with polyethylene in total hip arthroplasty (THA) appeared to have the potential to reduce wear dramatically. The thermally oxidized metal zirconium surface is transformed into 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 has been described. It occurred following joint dislocation or in situ succeeding disengagement of polyethylene liner...
November 18, 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/27826763/dual-mobility-cup-in-total-hip-arthroplasty-in-patients-less-than-fifty-five-years-and-over-ten-years-of-follow-up-a-prospective-and-comparative-series
#18
Jean-Marc Puch, Guy Derhi, Loys Descamps, Régis Verdier, Jacques H Caton
PURPOSE: We report clinical and radiological outcome of a dual mobility cup (DMC) of 2nd generation after a minimum of ten year-follow-up (FU). The goal of this work was to compare the results of this DMC in patients aged less than 55 years and in patients aged more than 55 years. METHODS: From 2000 to 2005, a prospective and consecutive series of 119 THAs with a cementless DMC of 2nd generation (GIROS) were performed in patients aged less than 55 years and 444 in patients aged more than 55 years...
November 8, 2016: International Orthopaedics
https://www.readbyqxmd.com/read/27814917/outcomes-of-ceramic-bearings-after-primary-total-hip-arthroplasty-in-the-medicare-population
#19
Steven M Kurtz, Edmund Lau, Doruk Baykal, Bryan D Springer
BACKGROUND: The purpose of this study was to analyze the outcomes of ceramic bearings used in primary total hip arthroplasty (THA) in the Medicare population. METHODS: A total of 315,784 elderly Medicare patients (65+) who underwent primary THA between 2005 and 2014 were identified from the United States Medicare 100% national administrative hospital claims database. Outcomes of interest included infection, dislocation, revision, or mortality at any time point after primary surgery...
September 28, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/27811144/the-damping-effect-of-cement-as-a-potential-mitigation-factor-of-squeaking-in-ceramic-on-ceramic-total-hip-arthroplasty
#20
F J Burgo, D E Mengelle, A Ozols, C Fernandez, C M Autorino
OBJECTIVES: Studies reporting specifically on squeaking in total hip arthroplasty have focused on cementless, and not on hybrid, fixation. We hypothesised that the cement mantle of the femur might have a damping effect on the sound transmitted through the metal stem. The objective of this study was to test the effect of cement on sound propagation along different stem designs and under different fixation conditions. METHODS: An in vitro model for sound detection, composed of a mechanical suspension structure and a sound-registering electronic assembly, was designed...
November 2016: Bone & Joint Research
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