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https://www.readbyqxmd.com/read/28074257/outcomes-of-dual-mobility-cups-in-a-young-middle-eastern-population-and-its-influence-on-life-style
#1
Chahine Assi, Elie El-Najjar, Camille Samaha, Kaissar Yammine
Dual mobility cups (DMC) in total hip arthroplasty (THA) are becoming popular among orthopaedic surgeons. Substantial benefit of their use has been reported among high risk patients, particularly in reducing post-operative hip instability (dislocation). Many reports stated some concern when implanted in young and active people where complications such as polyethylene wear and mechanical loosening could potentially be higher. This Middle Eastern study analyses a retrospective series of THA for any aetiology other than infection, using DMC for the acetabular component in 75 patients (85 implants) less than 70 years old...
January 10, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28073094/the-role-of-lesser-trochanter-fragment-in-unstable-pertrochanteric-a2-proximal-femur-fractures-is-refixation-of-the-lesser-trochanter-worth-the-effort
#2
Christian Ehrnthaller, Alain Christoph Olivier, Florian Gebhard, Lutz Dürselen
BACKGROUND: Instability of osteoporotic pertrochanteric fractures is defined by loss of medial/lateral cortical integrity with the posteromedial fragment including the lesser trochanter being pivotal for load distribution. Literature addressing the importance of lesser trochanter refixation is scarce. To clarify the effect of lesser trochanter refixation on primary stability in these fractures, following study was performed. METHODS: 21 femora were match-paired in 3 groups and osteotomized, creating pertrochanteric fractures (AO-31A2)...
December 30, 2016: Clinical Biomechanics
https://www.readbyqxmd.com/read/28070611/dual-mobility-cups-provide-biomechanical-advantages-in-situations-at-risk-for-dislocation-a-finite-element-analysis
#3
Alexandre Terrier, Adeliya Latypova, Maika Guillemin, Valérie Parvex, Olivier Guyen
PURPOSE: Constrained devices, standard implants with large heads, and dual mobility systems have become popular options to manage instability after total hip arthroplasty (THA). Clinical results with these options have shown variable success rates and significant higher rates of aseptic loosening and mechanical failures with constrained implants. Literature suggests potential advantages of dual mobility, however little is known about its biomechanics. We present a comparative biomechanical study of a standard implant, a constrained implant, and a dual mobility system...
January 9, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28067582/the-relationship-of-hip-muscle-performance-to-leg-ankle-and-foot-injuries-a-systematic-review
#4
Nili Steinberg, Gali Dar, Martin Dunlop, James Edmund Gaida
OBJECTIVES: Hip control affects movement and muscle firing patterns in the leg, ankle and foot, and may contribute to overuse injuries. Muscle performance can be measured as strength, endurance or muscle activation patterns. Our objective was to systematically review whether hip muscle performance is associated with leg, ankle and foot injuries. DATA SOURCES: A structured and comprehensive search of six medical literature databases was combined with forward and backward citation tracking (AMED, CINAHL, EMBASE, Medline, Scopus and SportDiscus)...
January 9, 2017: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/28066739/hip-instability-a-review-of-hip-dysplasia-and-other-contributing-factors
#5
REVIEW
Matthew J Kraeutler, Tigran Garabekyan, Cecilia Pascual-Garrido, Omer Mei-Dan
BACKGROUND: Hip instability has classically been associated with developmental dysplasia of the hip (DDH) in newborns and children. However, numerous factors may contribute to hip instability in children, adolescents, and adults. PURPOSE: This review aims to concisely present the literature on hip instability in patients of all ages in order to guide health care professionals in the appropriate diagnosis and treatment of the various disorders which may contribute to an unstable hip...
July 2016: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/28066738/ligamentum-teres-tendinopathy-and-tears
#6
REVIEW
Matthew J Kraeutler, Tigran Garabekyan, Cecilia Pascual-Garrido, Omer Mei-Dan
BACKGROUND: The ligamentum teres (LT) consists of two bands that originate on the ischial and pubic sides of the acetabular notch and insert on the fovea capitis of the femoral head. Recent studies have established the LT as an important hip stabilizer in a squatting position, particularly in patients with osseous instability. PURPOSE: This review aims to concisely present the literature on LT tendinopathy and tears in order to guide health care professionals in the appropriate diagnosis and treatment of these disorders...
July 2016: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/28065627/revision-total-hip-and-knee-arthroplasties-after-solid-organ-transplant
#7
Cameron K Ledford, Joseph M Statz, Brian P Chalmers, Kevin I Perry, Arlen D Hanssen, Matthew P Abdel
BACKGROUND: As solid organ transplant (SOT) patients' survival improves, the number undergoing total hip (THA) and total knee arthroplasty (TKA) is increasing. Accordingly, the number of revision procedures in this higher-risk group is also increasing. The goals of this study were to identify the most common failure mechanisms, associated complications, clinical outcomes, and patient survivorship of SOT patients after revision THA or TKA. METHODS: A retrospective review identified 39 revision procedures (30 revision THAs and 9 revision TKAs) completed in 37 SOT patients between 2000 and 2013...
December 11, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28054324/corr-insights-%C3%A2-the-femoro-epiphyseal-acetabular-roof-fear-index-a-new-measurement-associated-with-instability-in-borderline-hip-dysplasia
#8
Hal David Martin
No abstract text is available yet for this article.
January 4, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28053824/low-normal-tsh-levels-are-associated-with-impaired-bmd-and-hip-geometry-in-the-elderly
#9
Su Jin Lee, Kyoung Min Kim, Eun Young Lee, Mi Kyung Song, Dae Ryong Kang, Hyeon Chang Kim, Yoosik Youm, Young Mi Yun, Hyun-Young Park, Chang Oh Kim, Yumie Rhee
Subclinical hyperthyroidism is known to be associated with the risk of fractures in elderly people. However, there are few studies assessing whether low normal thyroid-stimulating hormone (TSH) levels affect bone density and geometry. Here, we aimed to assess the influence of the TSH level on bone mineral density (BMD) and geometry in elderly euthyroid subjects. This was a cross-sectional cohort study. A total of 343 men and 674 women with euthyroidism were included and analyzed separately. The subjects were divided into tertiles based on the serum TSH level...
December 2016: Aging and Disease
https://www.readbyqxmd.com/read/28053252/instability-of-the-hip-after-anatomical-re-alignment-in-patients-with-a-slipped-capital-femoral-epiphysis
#10
A Aprato, M Leunig, A Massé, T Slongo, R Ganz
AIMS: Several studies have reported the safety and efficacy of subcapital re-alignment for patients with slipped capital femoral epiphysis (SCFE) using surgical dislocation of the hip and an extended retinacular flap. Instability of the hip and dislocation as a consequence of this surgery has only recently gained attention. We discuss this problem with some illustrative cases. MATERIALS AND METHODS: We explored the literature on the possible pathophysiological causes and surgical steps associated with the risk of post-operative instability and articular damage...
January 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28043927/risk-factors-for-dislocation-after-revision-total-hip-arthroplasty-a-systematic-review-and-meta-analysis
#11
REVIEW
Lele Guo, Yanjiang Yang, Biao An, Yantao Yang, Linyuan Shi, Xiangzhen Han, Shijun Gao
BACKGROUND: No formal systematic review or meta-analysis was performed up to now to summarize the risk factors of dislocation after revision total hip arthroplasty(THA). AIMS: The present study aimed to quantitatively and comprehensively conclude the risk factors of dislocation after revision total hip arthroplasty. METHODS: A search was applied to CNKI, Embase, Medline, and Cochrane central database (all up to October 2016). All studies assessing the risk factors of dislocation after revision THA without language restriction were reviewed, and qualities of included studies were assessed using the Newcastle-Ottawa Scale...
December 30, 2016: International Journal of Surgery
https://www.readbyqxmd.com/read/28042114/dislocation-following-total-hip-arthroplasty-using-dual-mobility-acetabular-components-a-systematic-review
#12
I De Martino, R D'Apolito, V G Soranoglou, L A Poultsides, P K Sculco, T P Sculco
AIMS: The aim of this systematic review was to report the rate of dislocation following the use of dual mobility (DM) acetabular components in primary and revision total hip arthroplasty (THA). MATERIALS AND METHODS: A systematic review of the literature according to the Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines was performed. A comprehensive search of Pubmed/Medline, Cochrane Library and Embase (Scopus) was conducted for English articles between January 1974 and March 2016 using various combinations of the keywords "dual mobility", "dual-mobility", "tripolar", "double-mobility", "double mobility", "hip", "cup", "socket"...
January 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28041772/elevated-intra-articular-cobalt-and-chromium-levels-in-mechanically-assisted-crevice-corrosion-in-metal-on-polyethylene-total-hip-arthroplasty
#13
Brian J McGrory, Abigail M Payson, Johanna A MacKenzie
BACKGROUND: Failed total hip arthroplasty (THA) caused by mechanically assisted crevice corrosion (MACC) has serious consequences such as adverse local tissue reaction (ALTR). Serum cobalt (Co) and chromium (Cr) ion levels have been used to diagnose taper corrosion, but have not been shown to be an accurate measure of the severity of MACC or associated ALTRs. Additionally, elevated serum ions are not specific in patients with multiple artificial joints. METHODS: We examined the relationship between serum and intra-articular (IA) Co and Cr levels in a cohort of 20 patients undergoing revision THA, 16 who had symptomatic MACC...
December 14, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28017574/correcting-severe-varus-deformity-using-trial-components-during-total-knee-arthroplasty
#14
Man S Kim, In J Koh, Young J Choi, Yong D Kim, Yong In
BACKGROUND: Extensive medial soft tissue release may be necessary to correct severe varus deformity during total knee arthroplasty (TKA). However, this procedure may result in instability. Here, we describe a novel soft tissue balancing technique, which can minimize medial release in severe varus deformity during TKA. METHODS: Fifty knees (40 patients) with hip-knee-ankle angle of more than 20° of varus were corrected using this technique (group 1). After achieving flexion gap balancing by needle puncturing and spreading of the superficial medial collateral ligament, extension gap balancing was obtained by gradual extension with the trial components in place...
December 1, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28013332/early-experience-with-dual-mobility-acetabular-systems-featuring-highly-cross-linked-polyethylene-liners-for-primary-hip-arthroplasty-in-patients-under-fifty-five-years-of-age-an-international-multi-centre-preliminary-study
#15
Jean-Alain Epinette, Steven F Harwin, Fiachra E Rowan, Philippe Tracol, Michael A Mont, Morad Chughtai, Geoffrey H Westrich
PURPOSE: To evaluate early performance of contemporary dual mobility acetabular systems with second generation annealed highly cross-linked polyethylene for primary hip arthroplasty of patients under 55 years of age. METHODS: A prospective observational five years study across five centers in Europe and the USA of 321 patients with a mean age of 48.1 years was performed. Patients were assessed for causes of revision, hip instability, intra-prosthetic dissociation, Harris hip score and radiological signs of osteolysis...
December 24, 2016: International Orthopaedics
https://www.readbyqxmd.com/read/28012048/segmental-acetabular-rim-defects-bone-loss-oversizing-and-press-fit-cup-in-total-hip-arthroplasty-evaluated-with-a-probabilistic-finite-element-analysis
#16
Farid Amirouche, Giovanni F Solitro, Amit Walia, Mark Gonzalez, Aimee Bobko
PURPOSE: Management of segmental rim defects and bone mineral density (BMD) loss in the elderly prior to total hip replacement is unclear within classification systems for acetabular bone loss. In this study, our objectives were (1) to understand how a reduction in BMD in the elderly affects the oversizing of a press-fit cup for primary fixation and (2) to evaluate whether the location of the segmental defect affected cup fixation. METHODS: A finite element (FE) model was used to simulate and evaluate cup insertion and fixation in the context of segmental rim defects...
December 23, 2016: International Orthopaedics
https://www.readbyqxmd.com/read/28004142/the-evolution-of-outcomes-and-indications-for-the-dual-mobility-cup-a-systematic-review
#17
REVIEW
Cécile Batailler, Camdon Fary, Régis Verdier, Thierry Aslanian, Jacques Caton, Sebastien Lustig
PURPOSE: Instability following total hip arthroplasty remains a common and disabling complication. The dual mobility cup (DMC) allows a reduction in the dislocation rate. An increasing number of studies have been undertaken to better understand DMC long term outcomes and complications. The goal of this systematic review was to clarify its different uses and outcomes according to the indications. METHODS: A comprehensive literature review was performed using the keywords 'dual mobility' and 'tripolar cup' with no limit regarding the year of publication...
December 21, 2016: International Orthopaedics
https://www.readbyqxmd.com/read/27999925/total-hip-arthroplasty-instability-in-italy
#18
REVIEW
Francesco Falez, Matteo Papalia, Fabio Favetti, Gabriele Panegrossi, Filippo Casella, Gianluca Mazzotta
Hip dislocation is a major and common complication of total hip arthroplasty (THA), which appears with an incidence between 0.3% and 10% in primary total hip arthroplasties and up to 28% in revision THA. The hip dislocations can be classified into three groups: early, intermediate and late. Approximately two-thirds of cases can be treated successfully with a non-operative approach. The rest require further surgical intervention. The prerequisite to developing an appropriate treatment strategy is a thorough evaluation to identify the causes of the dislocation...
December 20, 2016: International Orthopaedics
https://www.readbyqxmd.com/read/27997465/does-lumbopelvic-fixation-add-stability-a-cadaveric-biomechanical-analysis-of-an-unstable-pelvic-fracture-model
#19
Ehsan Jazini, Noelle Klocke, Oliver Tannous, Herman S Johal, John Hao, Kanaan Salloum, Daniel E Gelb, Jason W Nascone, Eric Belin, C Max Hoshino, Mir Hussain, Robert V OʼToole, Brandon Bucklen, Steven C Ludwig
OBJECTIVE: We sought to determine the role of lumbopelvic fixation (LPF) in the treatment of zone II sacral fractures with varying levels of sacral comminution combined with anterior pelvic ring (PR) instability. We also sought to determine the proximal extent of LPF necessary for adequate stabilization and the role of LPF in complex sacral fractures when only 1 transiliac-transsacral (TI-TS) screw is feasible. MATERIALS AND METHODS: Fifteen L4 to pelvis fresh-frozen cadaveric specimens were tested intact in flexion-extension (FE) and axial rotation (AR) in a bilateral stance gliding hip model...
January 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/27992642/revision-total-hip-arthroplasty-using-the-cement-in-cement-technique
#20
Derek F Amanatullah, Graham D Pallante, Lorena V Floccari, George I Vasileiadis, Robert T Trousdale
The cement-in-cement technique is useful in the setting of revision total hip arthroplasty (THA), especially to gain acetabular exposure, change a damaged or loose femoral component, or change the version, offset, or length of a fixed femoral component. The goal of this retrospective study was to assess the clinical and radiographic characteristics of revision THA using the cement-in- cement technique. Between 1971 and 2013, a total of 63 revision THAs used an Omnifit (Osteonics, Mahwah, New Jersey) or Exeter (Howmedica, Mahwah, New Jersey) stem and the cement-in-cement technique at the senior author's institution...
December 19, 2016: Orthopedics
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