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https://www.readbyqxmd.com/read/28413142/outcomes-of-modular-dual-mobility-acetabular-components-in-revision-total-hip-arthroplasty
#1
E Grant Sutter, Taylor R McClellan, David E Attarian, Michael P Bolognesi, Paul F Lachiewicz, Samuel S Wellman
BACKGROUND: There is a high rate of dislocation after revision total hip arthroplasty. This study evaluated the outcomes of 1 modular dual mobility component in revision total hip arthroplasty in patients at high risk of dislocation. METHODS: We reviewed 64 revisions performed in 27 (42%) patients for recurrent dislocation, 16 (25%) for adverse local tissue reaction, 11 (17%) for reimplantation infection, and 10 (16%) for aseptic loosening, malposition, or fracture...
March 23, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28395391/dual-mobility-acetabular-cups-in-primary-total-hip-arthroplasty-in-patients-at-high-risk-for-dislocation
#2
Steven F Harwin, Jaydev B Mistry, Morad Chughtai, Anton Khlopas, Chukwuweike Gwam, Jared M Newman, Carlos A Higuera, Peter M Bonutti, Arthur L Malkani, Frank R Kolisek, Ronald E Delanois, Michael A Mont
INTRODUCTION: Postoperative dislocation occurs in approximately 2% of primary total hip arthroplasties (THAs). Risk factors associated with dislocation include: age of 70 years or older, body mass index (BMI) of 30 kg/m2 or greater, alcohol abuse, and neuro-degenerative diseases such as multiple sclerosis or Parkinson's disease. As a result, dual-mobility articulations, which have been typically used for revision procedures, have become an increasingly popular option for these "at risk" primary THAs...
April 11, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/28393600/shell-design-and-reaming-technique-affect-deformation-in-mobile-bearing-total-hip-arthroplasty-acetabular-components
#3
Scott R Small, John B Meding, Jordan W Oja, Katherine S Lakstins, Danielle J Gehron, Renee D Rogge, Christine A Buckley
Press-fit acetabular components are susceptible to rim deformation. The inherent variability within acetabular reaming techniques may generate increased press-fit and, subsequently, additional component deformation. The purpose of this study was to analyze the insertion and deformation characteristics of acetabular components designed for dual-mobility systems based on component design, size, and reaming technique. Shell deformation was quantified in a validated worst-case scenario foam pinch model. Thin-walled, one-piece, and modular dual-mobility shells of varying size were implanted in under- and over-reamed cavities with insertion force measured and shell deformation assessed using digital image correlation...
April 1, 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28341314/fretting-and-corrosion-at-the-backside-of-modular-cobalt-chromium-acetabular-inserts-a-retrieval-analysis
#4
T David Tarity, Chelsea N Koch, Jayme C Burket, Timothy M Wright, Geoffrey H Westrich
BACKGROUND: Adverse local tissue reaction formation has been suggested to occur with the Modular Dual Mobility (MDM) acetabular design. Few reports in the literature have evaluated fretting and corrosion damage between the acetabular shell and modular metal inserts in this modular system. We evaluated a series of 18 retrieved cobalt chromium MDM inserts for evidence of fretting and corrosion. METHODS: We assessed the backsides of 18 MDM components for evidence of fretting and corrosion in polar and taper regions based on previously established methods...
March 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28323248/accuracy-and-reproducibility-of-preoperative-three-dimensional-planning-for-total-hip-arthroplasty-using-biplanar-low-dose-radiographs-a-pilot-study
#5
Didier Mainard, Olivier Barbier, Yohann Knafo, Rémi Belleville, Laurence Mainard-Simard, Jean-Baptiste Gross
BACKGROUND: In total hip arthroplasty (THA), the acetabular cup and femoral stem must be correctly sized and positioned to avoid intraoperative and postoperative complications, achieve good functional outcomes and ensure long-term survival. Current two-dimensional (2D) techniques do not provide sufficient accuracy, while low-dose biplanar X-rays (EOS) had not been assessed in this indication. Therefore we performed a case-control study to: 1) evaluate the prediction of stem and cup size for a new 3D planning technique (stereoradiographic imaging plus 3D modeling) in comparison to 2D templating on film radiographs and 2) evaluate the accuracy and reproducibility of this 3D technique for preoperative THA planning...
March 16, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28276753/dual-mobility-acetabular-cup-for-total-hip-arthroplasty-use-with-caution
#6
Hamed Vahedi, Asim M Makhdom, Javad Parvizi
Dual-mobility cups were introduced to reduce the incidence of dislocation after total hip arthroplasty (THA). The biomechanics of dual-mobility cups allow for greater range of motion, jump distance and better stability when compared to conventional cups in THA. These cups can be very beneficial in THA particularly when the hip instability is a concern such as elderly patients, obese, hip fracture patients, those with neuromuscular diseases, or patients undergoing revision THA for instability. Areas covered: An extensive search is conducted in PubMed and Google scholar to find past five years publications relevant to dual-mobility cups in THA...
March 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/28249971/proximal-femoral-replacement-in-contemporary-revision-total-hip-arthroplasty-for-severe-femoral-bone-loss-a-review-of-outcomes
#7
A Viste, K I Perry, M J Taunton, A D Hanssen, M P Abdel
AIMS: Loss or absence of proximal femoral bone in revision total hip arthroplasty (THA) remains a significant challenge. While the main indication for the use of proximal femoral replacements (PFRs) is in the treatment of malignant disease, they have a valuable role in revision THA for loosening, fracture and infection in patients with bone loss. Our aim was to determine the clinical outcomes, implant survivorship, and complications of PFRs used in revision THA for indications other than malignancy...
March 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28197703/contemporary-dual-mobility-cup-regional-and-private-register-methodology-and-results
#8
André Ferreira, Jean-Louis Prudhon, Régis Verdier, Jean-Marc Puch, Loys Descamps, Guy Dehri, Marcel Remi, Jacques H Caton
INTRODUCTION: The dual-mobility cup (DMC) was introduced in 1979. Due to lack of referenced publications, this interesting and innovating concept was ignored during close to 20 years. However, 180 studies (level III or IV) have now been published. Evidence-based medicine is based on level I studies. Over the past three decades, the role of national registries developed with the intention of surveying orthopaedic implants. In 2012, we developed, registered, and implemented a specific database for contemporary DMC...
February 14, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28197702/dual-mobility-cup-a-new-french-revolution
#9
EDITORIAL
Jacques Henri Caton, André Ferreira
No abstract text is available yet for this article.
February 14, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28190644/what-are-normal-metal-ion-levels-after-total-hip-arthroplasty-a%C3%A2-serologic-analysis-of-four-bearing-surfaces
#10
Brian T Barlow, Philippe A Ortiz, John W Boles, Yuo-Yu Lee, Douglas E Padgett, Geoffrey H Westrich
BACKGROUND: The recent experiences with adverse local tissue reactions have highlighted the need to establish what are normal serum levels of cobalt (Co), chromium (Cr), and titanium (Ti) after hip arthroplasty. METHODS: Serum Co, Cr, and Ti levels were measured in 80 nonconsecutive patients with well-functioning unilateral total hip arthroplasty and compared among 4 bearing surfaces: ceramic-on-ceramic (CoC); ceramic-on-polyethylene (CoP); metal-on-polyethylene (MoP), and dual mobility (DM)...
December 3, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28176672/no-dislocations-after-primary-hip-arthroplasty-with-the-dual-mobility-cup-in-displaced-femoral-neck-fracture-in-patients-with-dementia-a-one-year-follow-up-in-20-patients
#11
Anders Elneff Graversen, Stig Storgaard Jakobsen, Pia Kjær Kristensen, Theis Muncholm Thillemann
PURPOSE: The aim of this study was to describe the dislocation rates, reoperation rates and mortality 30 day and one year following THA with AVANTAGE(®) dual mobility cup among dementia patients with an acute displaced intracapsular femoral neck fracture. PATIENTS AND METHODS: From 2010 to 2014 we identified 20 hip fracture patients with dementia, who have had total hip arthroplasty with the AVANTAGE(®) dual mobility cup. The primary outcome was dislocation. Secondary outcomes were revision surgery, 30 days and one year mortality, time to surgery and length of hospital stay...
2017: SICOT-J
https://www.readbyqxmd.com/read/28165597/increase-in-safe-zone-area-of-the-acetabular-cup-using-dual-mobility-cups-in-tha
#12
Takaaki Ohmori, Tamon Kabata, Toru Maeda, Yoshitomo Kajino, Tadashi Taga, Kazuhiro Hasegawa, Daisuke Inoue, Takashi Yamamoto, Tomoharu Takagi, Hiroyuki Tsuchiya
BACKGROUND: Dual mobility cup (DMC) inserts reduce the risk of dislocation after total hip arthroplasty (THA). No available research has clearly delineated stability advantages of DMC inserts in primary and revision THA. We investigated: (i) the degree of change in the safe zone of the cup when a DMC insert is used compared to a fixed insert; (ii) the method of selecting candidates for a DMC insert without changing the position of the acetabular (cup) component during revision THA in frequent dislocation cases caused by implant impingement...
January 30, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28138720/the-dual-mobility-cup-in-muscular-skeletal-oncology-rationale-and-indications
#13
Carmine Zoccali, Dario Attala, Alessandra Scotto di Uccio, Barbara Rossi, Gennaro Scotto, Roberto Biagini
PURPOSE: Because of the improvement of medical therapy and the corresponding increase in life expectancy, orthopaedic surgeons are obliged to perform more wide resections rather than intramedullary stabilization nailing for patients affected by tumours of the hip compared to the past. Wide resection often causes joint instability, so prosthetic reconstruction presents a higher risk of dislocation than in primary osteoarthritis cases. The aim of the present paper is to classify the indications for the dual mobility cup (DMC) hip prosthesis based on the anatomic structures involved in the disease and to analyse the rationale to reduce the risk of dislocation...
January 31, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28124104/the-linear-penetration-rate-is-not-relevant-for-evaluating-wear-of-dual-mobility-cups-an-explant-study
#14
Bertrand Boyer, Thomas Neri, Alexandre Di Iorio, Jean Geringer, Remi Philippot, Frederic Farizon
PURPOSE: The linear penetration rate (LPR) has been used to estimate volumetric wear ever since metal-on-polyethylene bearings were first introduced. Annual volumetric wear and osteolysis are interrelated. The use of dual mobility cups has increased; however, the presence of two bearings needs paraclinical monitoring of wear to anticipate potential wear-related complications. Is LPR correlated to volumetric wear? METHODS: Ninety-eight dual mobility liner retrievals were mapped in three-dimensions (3D) with a fully automatic stripe light scanner...
January 26, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28097416/-use-of-dual-mobility-cups-for-revision-hip-arthroplasty
#15
E Röhner, G Matziolis
The dual mobility cup (DMC) is an increasingly important tool not only in primary but also in revision total hip arthroplasty to prevent dislocation and eventually reduce postoperative complication rates. Various studies have shown survival rates with DMCs of up to 100% with an average dislocation rate of less than 1.5% after primary hip arthroplasty and a follow-up of 10 years. In revision surgery, survival rates of up to 99% were reported with dislocation rates between 0 and 10% after an average of 5 years after implantation...
February 2017: Der Orthopäde
https://www.readbyqxmd.com/read/28097387/all-dual-mobility-cups-are-not-the-same
#16
Thierry Aslanian
PURPOSE: Although the natural history of dual mobility has been exclusively borne for 20 years by a single company (due to industrial ownership), the concept has undeniably been very widely popularised with nearly 40 cups on the French market which should be regarded as a weight bearing surface, both broadly and in their own right. However, within the same original idea, these implants are not all identical (design, material, fixation ect.).The aim of this work is to propose a classification of different dual mobility cups by distinguishing between thegeneral characteristics of a conventional cup and those particular to this type of implant...
January 18, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28091769/bousquet-dual-mobility-socket-for-patient-under-fifty%C3%A2-years-old-more-than-twenty%C3%A2-year-follow-up-of-one-hundred-and-thirty-one-hips
#17
Remi Philippot, Thomas Neri, Bertrand Boyer, Brice Viard, Frederic Farizon
PURPOSE: The aim of this study was to analyze dual mobility cup survival rate on young patients under 50 years old at more than 20 years of follow up. METHODS: One hundred thirty seven hips with a first generation of dual mobility Bousquet cup (Serf) were included. The mean age at the time of the surgery was 41 years and the mean follow-up was 21.9 years. RESULTS: Twenty year follow-up cup survival rate was 77%. No dislocation occurred, 44 hips were revised (including 21 cup aseptic loosenings isolated, 15 Intra Prosthetic Dislocations), seven hips were lost to follow-up, 11 patients died, and 75 hips were still in situ...
January 16, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28091768/total-hip-arthroplasty-instability-treatment-without-dual-mobility-cups-brief-overview-and-experience-of-other-options
#18
REVIEW
Luigi Zagra, Eleonora Caboni
Dual mobility cups are getting increasing interest for the prevention, but also in the treatment of THA instability. Nevertheless when a dislocation occurs the main issue remains the knowledge and the correction of the causes of dislocation, including reorientation of the components and soft tissues treatment. There are several options of alternative implants to DMCs including upsizing of the head, and constrained liners. The Authors present how to evaluate patients with THA instability, the advantages and the disadvantages of each procedure and their experience in the treatment of cases without DMCs during a five years' time period...
March 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28078363/short-term-outcome-after-total-hip-arthroplasty-using-dual-mobility-cup-report-from-lithuanian-arthroplasty-register
#19
Sarunas Tarasevicius, Alfredas Smailys, Kazimieras Grigaitis, Otto Robertsson, Justinas Stucinskas
PURPOSE: The purpose of the study was to investigate how the use of dual-mobility cups (DMCs) affected the risk of revision due to dislocation as well as overall risk of revision compared with a conventional total hip arthroplasty (THA) system in the short term. METHODS: A total of 12,657 primary THAs were registered from the start of 2011 to the end of 2014. 620 THAs were with DMCs. For comparison, we included all registered THAs with Exeter cup and a cemented Exeter stem combined with 28-mm femoral head...
January 12, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28078362/use-of-dual-mobility-cup-in-revision-hip-arthroplasty-reduces-the-risk-for-further-dislocation-analysis-of-seven-hundred-and-ninety-one-first-time-revisions-performed-due-to-dislocation-reported-to-the-swedish-hip-arthroplasty-register
#20
Maziar Mohaddes, Peter Cnudde, Ola Rolfson, Alexander Wall, Johan Kärrholm
PURPOSE: Dislocation after total hip arthroplasty (THA) is a common reason for revision. The last decade fostered a significant increase in the use of dual-mobility cups (DMCs). Here we report our study on the short-term survival rate of a cemented DMC reported to the Swedish Hip Arthroplasty Register (SHAR) compared with other cemented designs used in first-time revision due to dislocation. METHODS: During 2005-2015, 984 first-time revisions for dislocation were reported to SHAR...
January 11, 2017: International Orthopaedics
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