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https://www.readbyqxmd.com/read/28455467/risk-factors-for-failure-of-the-36-mm-metal-on-metal-pinnacle-total-hip-arthroplasty-system-a-retrospective-single-centre-cohort-study
#1
G S Matharu, R S Nandra, F Berryman, A Judge, P B Pynsent, D J Dunlop
AIMS: To determine ten-year failure rates following 36 mm metal-on-metal (MoM) Pinnacle total hip arthroplasty (THA), and identify predictors of failure. PATIENTS AND METHODS: We retrospectively assessed a single-centre cohort of 569 primary 36 mm MoM Pinnacle THAs (all Corail stems) followed up since 2012 according to Medicines and Healthcare Products Regulation Agency recommendations. All-cause failure rates (all-cause revision, and non-revised cross-sectional imaging failures) were calculated, with predictors for failure identified using multivariable Cox regression...
May 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28416826/-surgical-technique-and-early-clinical-outcomes-of-direct-anterior-approach-to-total-hip-arthroplasty
#2
M Lv, J Q Zhang, X S Wang, Y Huang, W Li, C Y Zhang
OBJECTIVE: To describe the surgical technique of direct anterior approach to total hip arthroplasty and to report the early clinical outcomes. METHODS: A series of 100 consecutive, unselected patients who had 116 primary total hip arthroplasty surgeries (16 bilateral) done through direct anterior approach from March 11 2015 to June 21 2016 was reviewed. There were 50 male patients and 50 female patients. The average patient age was 51 years, and the average body mass index was 24...
April 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28295790/landscape-features-impact-connectivity-between-soil-populations-a-comparative-study-of-gene-flow-in-earthworms
#3
L Dupont, M Torres-Leguizamon, P René-Corail, J Mathieu
Landscape features are known to alter the spatial genetic variation of aboveground organisms. Here, we tested the hypothesis that the genetic structure of belowground organisms also responds to landscape structure. Microsatellite markers were used to carry out a landscape genetic study of two endogeic earthworm species, Allolobophora chlorotica (N = 440, eight microsatellites) and Aporrectodea icterica (N = 519, seven microsatellites), in an agricultural landscape in the North of France, where landscape features were characterized with high accuracy...
June 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28260601/outcomes-of-different-bearings-in-total-hip-arthroplasty-implant-survival-revision-causes-and-patient-reported-outcome
#4
REVIEW
Claus Varnum
Total hip arthroplasty (THA) is a common and successful treatment of patients suffering from severe osteoarthritis that significantly reduces pain and improves hip function and quality of life. Traditionally, the outcome of THA has been evaluated by orthopaedic surgeons and assessed in morbidity and mortality rates, and implant survival. As patients and surgeons may assess outcome after THA differently, patient-reported outcomes (PROMs) have gained much more interest and are today recognized as very important tools for evaluating the outcome and satisfaction after THA...
March 2017: Danish Medical Journal
https://www.readbyqxmd.com/read/28244914/investigation-of-taper-failure-in-a-contemporary-metal-on-metal-hip-arthroplasty-system-through-examination-of-unused-and-explanted-prostheses
#5
David Langton, Imran Ahmed, Peter Avery, Martin Bone, Nicholas Cooke, David Deehan, Patrick Duffy, Pedro Foguet, Stephen Green, James Holland, Anwar Jafri, Lee Longstaff, James Lord, Jonathan Loughead, R M Dominic Meek, Helen Murray, Ananda Nanu, A V F Nargol, Susan Claire Scholes, Raghavendra Prasad Sidaginamale, Susan Waller, Thomas Joyce
BACKGROUND: Large-diameter (≥36-mm) metal-on-metal (MoM) total hip replacements have been shown to fail at an unacceptably high rate. Globally, the DePuy Pinnacle prosthesis was the most widely used device of this type. There is evidence to suggest that one of the main reasons for the poor clinical performance of large-diameter MoM prostheses is the metal debris released from the head-stem taper junction-i.e., taper junction failure. The aim of this study was to investigate variation in the as-manufactured finish of the female taper surface and to determine its influence on material loss...
March 1, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28218379/the-corail-stem-as-a-reverse-hybrid-survivorship-and-x-ray-analysis-at-10-years
#6
Helge Wangen, Lars Nordsletten, Jens G Boldt, Anne M Fenstad, David E Beverland
BACKGROUND: The use of a cemented cup together with an uncemented stem in total hip arthroplasty (THA) has become popular in Norway and Sweden during the last decade. The results of this prosthetic concept, reverse hybrid THA have been sparsely described.We report our experience of reverse hybrid THA, using the Elite plus polyethylene cemented cup together with the Corail fully hydroxyapatite-coated uncemented stem and a 28-mm alumina ceramic head. PATIENTS AND METHODS: 132 consecutive reverse hybrid hip arthroplasties were performed from January 2000 to December 2003 in 126 patients with a mean age of 54...
February 7, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/27967600/dna-methylation-is-an-independent-prognostic-marker-of-survival-in-adrenocortical-cancer
#7
Anne Jouinot, Guillaume Assie, Rossella Libe, Martin Fassnacht, Thomas Papathomas, Olivia Barreau, Bruno de la Villeon, Simon Faillot, Nadim Hamzaoui, Mario Neou, Karine Perlemoine, Fernande Rene-Corail, Stéphanie Rodriguez, Mathilde Sibony, Frédérique Tissier, Bertrand Dousset, Silviu Sbiera, Cristina Ronchi, Matthias Kroiss, Esther Korpershoek, Ronald de Krijger, Jens Waldmann, Detlef K, Bartsch, Marcus Quinkler, Magalie Haissaguerre, Antoine Tabarin, Olivier Chabre, Nathalie Sturm, Michaela Luconi, Franco Mantero, Massimo Mannelli, Regis Cohen, Véronique Kerlan, Philippe Touraine, Gaelle Barrande, Lionel Groussin, Xavier Bertagna, Eric Baudin, Laurence Amar, Felix Beuschlein, Eric Clauser, Joel Coste, Jérôme Bertherat
Context: Adrenocortical cancer (ACC) is an aggressive tumor with a heterogeneous outcome. Prognostic stratification is difficult even based on tumor stage and Ki67. Recently integrated genomics studies have demonstrated that CpG islands hypermethylation is correlated with poor survival. Objective: The goal of this study was to confirm the prognostic value of CpG islands methylation on an independent cohort. Design: Methylation was measured by methylation-specific multiplex ligation-dependent probe amplification (MS-MLPA)...
March 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27917354/results-of-a-hydroxyapatite-coated-femoral-stem-corail-in-chinese-a-minimum-10-year-follow-up
#8
Jianda Xu, Zikang Xie, Jianning Zhao, Yi Gao, Hong Zhao, Libo Peng, Yuxing Qu
BACKGROUND: Due to the adverse effects of cemented hip arthroplasty, uncemented stems with hydroxyapatite (HA) coating reduces these risks and enhanced integration. The concept of an extensive HA coating for the fixation of a tapered femoral stem (Corail(®)) was introduced, which can achieve durable biological fixation and preserve normal periprosthetic bone activity. Here we describe the clinical and radiological outcome in patients with the Corail(®) stem. METHODS: 92 total hip replacements in 81 patients using the Corail(®) stem were followed-up...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27914976/cementless-lateralized-stems-in-primary-tha-mid-term-survival-and-risk-factors-for-failure-in-172-stems
#9
C Courtin, A Viste, F Subtil, O Cantin, R Desmarchelier, M H Fessy
INTRODUCTION: Increasing the femoral offset when performing total hip arthroplasty (THA) theoretically increases the stresses and risks of the stem not integrating itself into bone. But this concept has not been validated for cementless stems; this led us to conduct a retrospective study to determine: (1) the risk factors for the occurrence of symptomatic femoral radiological abnormalities, (2) the incidence of these abnormal radiological findings, (3) the revision rate for aseptic non-integration of a cementless lateralized stem...
November 30, 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/27909119/impact-of-a-learning-curve-on-the-survivorship-of-4802-cementless-total-hip-arthroplasties
#10
P Magill, J Blaney, J C Hill, M P Bonnin, D E Beverland
AIMS: Our aim was to report survivorship data and lessons learned with the Corail/Pinnacle cementless total hip arthroplasty (THA) system. PATIENTS AND METHODS: Between August 2005 and March 2015, a total of 4802 primary cementless Corail/Pinnacle THAs were performed in 4309 patients. In March 2016, we reviewed these hips from a prospectively maintained database. RESULTS: A total of 80 hips (1.67%) have been revised which is equivalent to a cumulative risk of revision of 2...
December 2016: Bone & Joint Journal
https://www.readbyqxmd.com/read/27874909/risk-factors-for-intraoperative-proximal-femoral-fracture-during-primary-cementless-tha
#11
Ran Zhao, Hong Cai, Yanqing Liu, Hua Tian, Ke Zhang, Zhongjun Liu
Intraoperative proximal femoral fracture, one of the most common complications of total hip arthroplasty (THA), occurs more often in cementless procedures and can affect rehabilitation, hospitalization time, and cost of treatment. The goal of this study was to identify risk factors for intraoperative proximal femoral fracture in THA to identify high-risk groups preoperatively and minimize the incidence of this complication. This nested case-control study included 904 primary cementless THA procedures (769 patients) performed between January 2009 and July 2015...
March 1, 2017: Orthopedics
https://www.readbyqxmd.com/read/27829734/601-metal-on-metal-total-hip-replacements-with-36%C3%A2-mm-heads-a-5-minimum-year-follow-up-levels-of-armd-remain-low-despite-a-comprehensive-screening-program
#12
Amit Atrey, Alister Hart, Nasir Hussain, Jonathon Waite, Andrew J Shepherd, Steve Young
BACKGROUND: We conducted a retrospective study to assess the clinical outcome, failure rate, and reason for failure of a large consecutive series of 36 mm MoM Corail/Pinnacle total hip replacements (THRs). METHODS: Between 2006 and 2011, 601 consecutive 36 mm MoM THRs were performed (585 patients). Patients were followed according to the UK Medicines and Healthcare Products Regulatory Agency (MHRA) guidelines. All patients were accounted for and 469 patients (78%) were clinically and radiographically assessed...
March 2017: Journal of Orthopaedics
https://www.readbyqxmd.com/read/27768218/varus-will-have-varus-a-radiological-study-to-assess-and-predict-varus-stem-placement-in-uncemented-femoral-stems
#13
Colin G Murphy, Michel P Bonnin, Antoine H Desbiolles, Yannick Carrillon, Tarik Aїt Si Selmi
BACKGROUND: Varus inclination of the uncemented stem is not necessarily a technical error. The proximal femoral anatomy of hips with a coxa vara deformity frequently predisposes varus inclination. METHODS: We reviewed a series of 200 patients undergoing primary uncemented THA with the Corail® hip system. Preoperative data were based on patient demographics, diagnosis, and radiographic information (preoperative templating-CT measurements), and compared postoperative alignment for each stem and type of stem used...
November 10, 2016: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/27704611/variation-in-taper-surface-roughness-for-a-single-design-effects-the-wear-rate-in-total-hip-arthroplasty
#14
Robert K Whittaker, Harry S Hothi, Antti Eskelinen, Gordon W Blunn, John A Skinner, Alister J Hart
Material loss from the head-stem taper junction of total hip arthroplasty (THA) is implicated in adverse reactions to metal debris (ARMD); the mechanisms for this are multi-factorial. We investigated the relationship between the roughness of the "as manufactured" taper surface and the wear rate from this junction. Fifty retrieved Pinnacle metal-on-metal (MOM) bearings paired with a Corail stem were included in the study. Multivariable statistical analysis was performed to determine the influence of taper roughness on material loss rate after controlling for other confounding surgical, implant, and patient factors...
October 5, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/27676848/neurotropism-of-arboviruses-seen-by-a-physiatric-view-martiniquaises-experiences-through-epidemics-of-dengue-chikungunya-and-zika
#15
José-Luis Barnay, Andre Cabie, Sylvie Abel, Emilie Javelle, Odile Troisgros, Patrick René-Corail
Arboviruses cause very recurrent epidemics, the oldest Dengue, known especially outside the flu-like syndrome with high fever mainly impacting vulnerable populations, may be responsible for severe hemorrhagic fevers, but also a few cases of Guillain-Barré syndrome. In 2014, the French Antilles occurred an outbreak of Chikungunya, following that of the Reunion's outbreak. During this period have been described, the articular and musculo-squellettic lesions, responsible for loss of autonomy in populations already carriers of chronic inflammatory joint damage or mechanical, but also a heavy impact on the autonomy of elderly and frail people...
September 2016: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/27436922/differences-in-subsidence-rate-between-alternative-designs-of-a-commonly-used-uncemented-femoral-stem
#16
Munnan Al-Najjim, Usman Khattak, Juluis Sim, Iain Chambers
INTRODUCTION: Measurement of early subsidence of uncemented femoral stems can be used to evaluate the likelihood of long term stem component loosening and therefore clinical failure. Our aim was to evaluate the factors associated with subsidence in collared and uncollared versions of the Corail femoral stem. METHODS: 121 hips in 113 consecutive patients were studied, operated on by two surgeons in our hospital differing in their choice of Corail stem. This gave two groups of patients with 66 hips having collared stems and 55 hips having uncollared...
December 2016: Journal of Orthopaedics
https://www.readbyqxmd.com/read/27131803/femoral-revision-surgery-using-a-fully-hydroxyapatite-coated-stem-a-cohort-study-of-twenty-two-to-twenty-seven%C3%A2-years
#17
Olav Reikerås
PURPOSE: Femoral component revision with either cemented or proximally coated stems has been disappointing, but revision with extensively coated stems has been promising. Our purpose was to evaluate the long-term outcome using an extensively hydroxyapatite (HA)-coated stem in femoral revisions surgery. METHODS: During 1988-1993 we performed 66 femoral revisions in 65 patients (49 women), mean age 58 (range, 28-86) years. We used a grit-blasted straight stem made of TiAl6V4 designed for press-fit insertion (Landos Corail; Landanger, Chaumont, France)...
February 2017: International Orthopaedics
https://www.readbyqxmd.com/read/27098331/metal-on-metal-testing-to-salvage-a-device-disaster-commentary-on-an-article-by-gulraj-s-matharu-bsc-hons-mbchb-mrcs-mres-et-al-the-effectiveness-of-blood-metal-ions-in-identifying-patients-with-unilateral-birmingham-hip-resurfacing-and-corail-pinnacle-metal
#18
COMMENT
https://www.readbyqxmd.com/read/27098320/the-effectiveness-of-blood-metal-ions-in-identifying-patients-with-unilateral-birmingham-hip-resurfacing-and-corail-pinnacle-metal-on-metal-hip-implants-at-risk-of-adverse-reactions-to-metal-debris
#19
Gulraj S Matharu, Fiona Berryman, Lesley Brash, Paul B Pynsent, Ronan B C Treacy, David J Dunlop
BACKGROUND: We investigated whether blood metal ions could effectively identify patients with metal-on-metal hip implants with two common designs (Birmingham Hip Resurfacing [BHR] and Corail-Pinnacle) who were at risk of adverse reactions to metal debris. METHODS: This single-center, prospective study involved 598 patients with unilateral hip implants (309 patients with the BHR implant and 289 patients with the Corail-Pinnacle implant) undergoing whole blood metal ion sampling at a mean time of 6...
April 20, 2016: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/26726098/cementless-corail%C3%A2-femoral-stems-with-laser-neck-etching-long-term-survival-rupture-rate-and-risk-factors-in-295-stems
#20
A Merini, A Viste, R Desmarchelier, M-H Fessy
INTRODUCTION: Implant neck fracture involving a non-modular femoral stem is rare in primary total hip arthroplasty (THA). Occasional cases have been reported following laser etching of the Corail(tm) stem, but risk factors have not been precisely determined. We therefore performed a retrospective study on a series of Corail(tm) stems with laser neck etching, in order to: (1) determine the exact implant neck fracture rate at 10 years, and (2) identify associated risk factors. HYPOTHESIS: Laser etching increases the rate of implant neck fracture...
February 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
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