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Showing 1-30 of 103 results for "427985" within Papers
Kelly M Seymour et al.
Journal of biomechanical engineering, 135(2), 021017-021017 (2013-03-01)
Ultra high molecular weight polyethylene (UHMWPE, or ultra high), a frequently used material in orthopedic joint replacements, is often the cause of joint failure due to wear, fatigue, or fracture. These mechanical failures have been related to ultra high's strength
David H Le et al.
Clinical orthopaedics and related research, 472(7), 2197-2200 (2014-03-13)
Historically, polyethylene wear and its sequelae (osteolysis, late instability, aseptic loosening) were common causes for revision total knee arthroplasty (TKA). Recently, polyethylene manufacturing has become more consistent; furthermore, a clearer understanding of the importance of oxidation on polyethylene performance led
Mohammed A Khairy et al.
Environmental pollution (Barking, Essex : 1987), 181, 151-158 (2013-07-23)
Egypt is a major agricultural country in Africa with a known past of organochlorine pesticides (OCPs) application, yet data on atmospheric levels of OCPs in Egypt is sparse. Low density polyethylene (LDPE) passive samplers were therefore deployed for 3 weeks
A Lübbeke et al.
The bone & joint journal, 96-B(7), 868-875 (2014-07-06)
Large-head metal-on-metal (MoM) total hip replacements (THR) have given rise to concern. Comparative studies of small-head MoM THRs over a longer follow-up period are lacking. Our objective was to compare the incidence of complications such as infection, dislocation, revision, adverse
Paul H Wooley
Clinical orthopaedics and related research, 472(12), 3699-3708 (2014-06-20)
Biological responses to wear debris were largely elucidated in studies focused on conventional ultrahigh-molecular-weight polyethylene (UHMWPE) and some investigations of polymethymethacrylate cement and orthopaedic metals. However, newer bearing couples, in particular metal-on-metal but also ceramic-on-ceramic bearings, may induce different biological
The fouling hydroid Ectopleura larynx: a lack of effect of next generation antifouling technologies.
Nina Bloecher et al.
Biofouling, 29(3), 237-246 (2013-02-27)
The hydroid Ectopleura larynx is one of the main fouling organisms on salmon aquaculture cages in Norway; this study investigated novel surface materials and microtopographies to deter its settlement. The settlement preferences of hydroid larvae for 12 materials with wettabilities
Emiel A van Ijsseldijk et al.
Journal of orthopaedic research : official publication of the Orthopaedic Research Society, 32(4), 613-617 (2014-01-08)
Measuring the minimum-joint-space-width (mJSW) in total knee arthroplasty (TKA) in Roentgen stereophotogrammetric analysis (RSA) provides valuable information on polyethylene wear, a leading cause for TKA failure. Most existing studies use non-weight-bearing (NWB) patient positioning. The latter may compromise mJSW measurements
Ingvild Bostadløkken et al.
Ugeskrift for laeger, 175(13), 891-892 (2013-04-16)
We present a case of a 66-year-old woman who had a total knee arthroplasty. Shortly after surgery a 90° rotation of her polyethylene liner took place. The complication was undiagnosed for 1.5 years. To know this problem and be able
Terence J Gioe et al.
The Journal of bone and joint surgery. American volume, 92(2), 478-487 (2010-02-04)
Outcomes of total knee arthroplasties performed with modern all-polyethylene tibial components have been found to be comparable with or better than those of arthroplasties done with metal-backed modular components in numerous mid-to-long-term follow-up studies, radiostereometric analyses, and the few prospective
P C Page et al.
Veterinary parasitology, 203(1-2), 184-188 (2014-03-25)
The efficacy of untreated and alphacypermethrin-treated high density polyethylene (HDPE) mesh against Culicoides biting midges (Diptera: Ceratopogonidae) was determined using Onderstepoort downdraught black light traps and a contact bioassay. Three traps were operated overnight in four replicates of a 3×3
A H Hoffmann et al.
Der Orthopade, 36(10), 908-912 (2007-09-25)
Luxation and excessive wear of the mobile bearing in modern three-piece total ankle replacement (TAR) is reported. We conducted a systematic review of studies to explore and discuss the rate and causes of these complications.A systematic review of studies since
Daniel J Berry et al.
Clinical orthopaedics and related research, 472(12), 3659-3664 (2014-04-09)
Wear and corrosion in joint arthroplasty are important causes of failure. From the standpoint of current clinical importance, there are four main categories of wear and tribocorrosion: polyethylene wear, ceramic-on-ceramic (CoC) bearing wear, metal-on-metal (MoM) bearing wear, and taper tribocorrosion.
Simon S Jameson et al.
Acta orthopaedica, 86(1), 32-40 (2014-10-11)
There has been a recent trend towards the use of greater femoral head sizes in an attempt to improve function and enhance stability after primary hip replacement. This has been associated with the use of alternative bearings, theoretically to reduce
Steven G O'Connell et al.
Environmental pollution (Barking, Essex : 1987), 193, 71-78 (2014-07-11)
Sequestering semi-polar compounds can be difficult with low-density polyethylene (LDPE), but those pollutants may be more efficiently absorbed using silicone. In this work, optimized methods for cleaning, infusing reference standards, and polymer extraction are reported along with field comparisons of
Thomas J Blumenfeld et al.
The Knee, 17(6), 412-416 (2010-01-12)
Use of an all-polyethylene tibial component in primary total knee arthroplasty remains an attractive option considering the reported durability of the construct, the lowered cost compared to modular metal-backed tibia, and the elimination of backside wear. The two major intra-operative
Maria C S Inacio et al.
Acta orthopaedica, 84(2), 145-152 (2013-03-15)
There is no substantial clinical evidence for the superiority of alternative bearings in total knee arthroplasty (TKA). We compared the short-term revision risk in alternative surface bearing knees (oxidized zirconium (OZ) femoral implants or highly crosslinked polyethylene (HXLPE) inserts) with
Klaas Auke Nouta et al.
Clinical orthopaedics and related research, 470(12), 3549-3559 (2012-09-14)
Less than 1% of all primary TKAs are performed with an all-polyethylene tibial component, although recent studies indicate all-polyethylene tibial components are equal to or better than metal-backed ones. We asked whether the metal-backed tibial component was clinically superior to
Klas Gustafson et al.
Acta orthopaedica, 85(4), 348-354 (2014-06-17)
Metal-on-metal (MOM) total hip arthroplasties were reintroduced because of the problems with osteolysis and aseptic loosening related to polyethylene wear of early metal-on-polyethylene (MOP) arthroplasties. The volumetric wear rate has been greatly reduced with MOM arthroplasties; however, because of nano-size
Thibault Honegger et al.
Lab on a chip, 13(8), 1538-1545 (2013-02-23)
In this paper, we introduce a dielectrophoresis (DEP)-based handling method that allows fine 3D manipulation of beads in suspension using a lab on a chip device. The device consists of two layers of linear electrodes on the top and bottom
Prasun K Roy et al.
Environmental science & technology, 45(10), 4217-4227 (2011-04-19)
Plastic waste disposal is one of the serious environmental issues being tackled by our society today. Polyethylene, particularly in packaging films, has received criticism as it tends to accumulate over a period of time, leaving behind an undesirable visual footprint.
Cesar Atienza et al.
Journal of surgical orthopaedic advances, 17(1), 27-33 (2008-02-21)
Polyethylene wear-induced osteolysis is the most significant primary factor limiting the life span of total joint arthroplasty. To reduce ultra-high-molecular-weight polyethylene (UHMWPE) particulate wear debris, highly cross-linked polyethylene (HXPE) bearings have been introduced in total hip arthroplasty (THA). In vitro
Cara A Cipriano et al.
American journal of orthopedics (Belle Mead, N.J.), 37(2), E18-E25 (2008-04-11)
Metal debris should not be generated in a well-fixed, well-functioning metal-on-polyethylene total hip arthroplasty. However, surgeons sometimes encounter periprosthetic metallosis during revision hip surgery. Insert wear, fracture, or dislodgment in modular components may lead to articulation of the prosthetic head
Ryan M Baxter et al.
Journal of biomedical materials research. Part B, Applied biomaterials, 101(3), 467-475 (2013-02-26)
Despite the widespread implementation of highly cross-linked polyethylene (HXLPE) liners to reduce the clinical incidence of osteolysis, it is not known if the improved wear resistance will outweigh the inflammatory potential of HXLPE wear debris generated in vivo. Thus, we
Roumen Stamenkov et al.
The Journal of arthroplasty, 29(4), 822-826 (2013-10-01)
The aims of this were to examine the effect of acetabular liner exchange and intra-operative bone grafting surgery on peri-prosthetic osteolysis. Seven patients with well-fixed Harris-Galante-1 acetabular components received cemented exchange liners for worn liners associated with pre-operatively CT-quantified osteolysis.
Humphrey Morhenn et al.
Physical review letters, 111(17), 173003-173003 (2013-11-12)
Neutron scattering and extensive molecular dynamics simulations of an all atom C(100)H(202) system were performed to address the short-time dynamics leading to center-of-mass self-diffusion. The simulated dynamics are in excellent agreement with resolution resolved time-of-flight quasielastic neutron scattering. The anomalous
Mark P Figgie et al.
Clinical orthopaedics and related research, 472(12), 3770-3776 (2014-07-16)
The survivorship of total elbow arthroplasties is lower than surgeons and patients would like it to be, especially in patients with posttraumatic arthritis of the elbow. To improve durability, it is important to understand the failure modes of existing implants.
Matthew P Abdel et al.
Clinical orthopaedics and related research, 472(8), 2477-2482 (2014-04-16)
Backside damage of the polyethylene in TKA is a potential source of debris. The location of the tibial post in posterior-stabilized implants may influence micromotion, and thus affect backside damage, as may surface roughness. We used implant retrieval analysis to
Eliandra Mirlei Rossi et al.
Journal of infection in developing countries, 7(3), 229-234 (2013-03-16)
Contaminated sponges might lead to cross-contamination in kitchens since they can transfer microorganisms to surfaces where microorganisms can survive for hours or days and contaminate food. The main objective of this study was to evaluate the transfer and the survival
Morteza Meftah et al.
The Journal of bone and joint surgery. American volume, 95(13), 1193-1197 (2013-07-05)
Ceramic femoral heads produce less wear of the opposing polyethylene than do metal femoral heads in wear simulation studies. This is a matched-pair analysis of the wear of ceramic and metal femoral heads on conventional polyethylene in uncemented total hip
Monique M Perron et al.
Environmental toxicology and chemistry, 32(10), 2182-2189 (2013-07-09)
Contaminants enter marine and estuarine environments and pose a risk to human and ecological health. Recently, passive sampling devices have been utilized to estimate dissolved concentrations of contaminants of concern (COCs), such as polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls
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