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| 1 | Running-in friction of hip joint replacements can be significantly reduced:The effect of surface-textured acetabular cup显示文摘Hip joint replacements represent the most effective way of treatment for patients suffering from joint diseases.Despite the rapid improvement of implant materials over the last few decades,limited longevity associated with wear-related complications persists as the main drawback.Therefore,improved tribological perfor-mance is required in order to extend the service life of replacements.The effect of surface texturing of ultra-high molecular weight polyethylene(UHMWPE)acetabular cup was investigated in the present study.Unique tilling method was utilized for manufacturing the dimples with controlled diameter and depths on the contact surface of the cup.The experiments with four commercial femoral components and two model lubricants were realized.The main attention was paid to a coefficient of friction considering the differences between the original and the dimpled cups.Results showed remarkable lowering of friction,in general.Focusing on the simulated human synovial fluid,friction was reduced by 40%(alumina ceramic),38.8%(zirconia toughened ceramic),25.5%(metal),and 9.9%(oxinium).In addition,the dimples helped to keep the friction stable without fluctuations.To conclude,the paper brings a new insight into frictional behaviour of the hip replacements during running-in phase which is essential for overall implant lifespan.It is believed that proper surface texturing may rapidly improve the life quality of millions of patients and may lead to considerable financial savings. | David NECAS Hatsuhiko USAMI Tatsuya NIIMI Yoshinori SAWAE Ivan KRUPKA Martin HARTL | 2020 | Friction2020，8，6： | 2 |
| 2 | On Leray's self-similar solutions of the Navier-Stokes equations显示文摘 | NECAS J RUZICKA M SVERAJK V | 1996 | Acta Math1996，176，： | 1 |
| 3 | RT-3D TEE: characteristics of mitral annulus using mitral valve quantification (MVQ) program显示文摘 | Kovalova S Necas J | 2010 | Echocardiogra- phy2010，28，4： | 1 |
| 4 | Carrageenan: a review显示文摘 | Necas J Bartosikova L | 2013 | Veterinani Medicina2013，58，4： | 1 |
| 5 | Phacoemulsification and intraocular lens implantation:recent trends in cataract surgery 显示文摘 | H Kecova A Necas | 2004 | Acta Veterinaria Brno2004，73，11： | 1 |
| 6 | Hyaluronic acid( hyalu-ronan) :A review 显示文摘 | Necas J Bartosikova L Brauner P | 2008 | Vet Med2008，53，8： | 1 |
| 7 | On axially symmetric flows in R3 显示文摘 | LEONARDI S NECAS J PORKORNY M | 1999 | Z Anal Anwendungen1999，18，3： | 1 |
| 8 | Echocardiographic volumetry of tile right ventricle 显示文摘 | Kovalova S Necas J Cerbak R | 2005 | Eur J Echocardiogr2005，6，1： | 1 |
| 9 | Reaction of large-bite ligands with various tellurium compounds, Synthesis and structural characterization of and representing novel types of tellurium complexes显示文摘 | Novosad Josef Tornroos Karl W Necas Marek | 1999 | Polyedron1999，18，22： | 1 |
| 10 | On Leray's self-similar solutions of the Navier-Stokes equations显示文摘 | NECAS J BUZICKA M SVERAK V | 1996 | Acta Math1996，176，： | 1 |
| 11 | Inflammatory mediatorsaccelerate metabolism of benzo pyrene in rat alveolar type II cells:the role of enhanced cytochrome P450 1B1 expression 显示文摘 | Smerdovd L Neca J Svobodovd J | 2013 | Toxicolo-gy2013，314，1： | 1 |
| 12 | A sudden increase in partial pressure end-tidal carbon dioxide (PetCO2) at the moment of return of spontaneous circulation显示文摘 | Pokorna M Necas E Kratochvil J | 2009 | J Emerg Med2009，38，5： | 1 |
| 13 | A sudden increase in partial pressure end - tidal carbon dioxide( PetCO2 ) at the moment of spon- taneous circulation显示文摘 | Pokon~t M Necas E Kratochvtl J | 2010 | J Emerg Med2010，38，5： | 1 |
| 14 | Detection of phytoptasma ESFY in apricot trees using phloem and petioles 显示文摘 | Necas T Krska B | 2005 | Plant Pro tect Science2005，41，： | 1 |
| 15 | RT-3D TEE: characteristics of mitral annulus using mitral valve quantification (MVQ) program 显示文摘 | Kovalova S Necas J | 2011 | Echocardiography2011，28，4： | 1 |
| 16 | A sudden increase in partial pressure end trial carbon dioxide(PETCO2)at the moment of return of spontaneous circulation显示文摘 | Pkorna M Necas E Kratochvil J | 2009 | J Emerg Med2009，38，5： | 1 |
| 17 | Polycyclic aromatic hydrocarbons in porcine and bovine organs and tissues 显示文摘 | CIGANEK M NECA J | 2006 | Veterinarni Medicina2006，51，： | 1 |
| 18 | Chemical characterization of volatile organic compounds on animal farms显示文摘 | CIGANEK M NECA J | 2008 | Vet Med2008，53，12： | 1 |
| 19 | Hyaluronic acid(hyaluronan):a review显示文摘 | Necas J Bartosikova L Brauner P Kolar J | 2008 | Veterinarni Medicina2008，53，8： | 1 |
| 20 | Coronary artery bypass grafting in patients with left ventricular ejection fraction of 30% or less显示文摘 | Nemec P Bedanova H Necas J | 2001 | Bratisl Lek Listy2001，102，： | 1 |
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