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https://www.readbyqxmd.com/read/28819595/early-intraprosthetic-dislocation-of-a-dual-mobility-acetabular-construct-after-total-hip-arthroplasty
#1
Vineet Tyagi, Oluwaseun Akinbo
INTRODUCTION: The concept of a dual mobility (DM) cup has been in existence for more than 40 years and was initially popularized in Europe. Only recently has it started to garner attention in the United States. Its design, consisting of a small femoral head articulating within a larger polyethylene (PE) insert, which articulates with an outer shell, has found increasing use in patients that are at risk for post-operative dislocations. This case report describes a case of recurrent total hip arthroplasty (THA) dislocation managed with the implantation of a DM cup with an acute intraprosthetic dislocation of the DM construct...
March 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28780226/cementing-constrained-liners-into-secure-cementless-shells-a%C3%A2-minimum-15-year-follow-up-study
#2
Grant H Young, Matthew P Abdel, Richard L Amendola, Devon D Goetz, David G Lewallen, John J Callaghan
BACKGROUND: The authors and others have previously described the technique of cementing constrained liners into secure cementless acetabular shells and reported the short-term, average 3.9-year follow-up, using that technique. The purpose of the present study was to report the minimum 15-year follow-up of this same cohort. METHODS: Between 1988 and 2000, 31 consecutive constrained liners of one design were cemented into well-fixed, well-positioned cementless acetabular shells at 3 institutions...
November 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28611795/grape-composition-under-abiotic-constrains-water-stress-and-salinity
#3
REVIEW
José M Mirás-Avalos, Diego S Intrigliolo
Water stress and increasing soil salt concentration represent the most common abiotic constrains that exert a negative impact on Mediterranean vineyards performance. However, several studies have proven that deficit irrigation strategies are able to improve grape composition. In contrast, irrigation with saline waters negatively affected yield and grape composition, although the magnitude of these effects depended on the cultivar, rootstock, phenological stage when water was applied, as well as on the salt concentration in the irrigation water...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28579448/conversion-of-hip-hemiarthroplasty-to-total-hip-arthroplasty-utilizing-a-dual-mobility-construct-compared-with-large-femoral-heads
#4
Brian P Chalmers, Kevin I Perry, Arlen D Hanssen, Mark W Pagnano, Matthew P Abdel
BACKGROUND: Conversion of hemiarthroplasty to total hip arthroplasty (THA) has a historically high, up to 20%, postoperative dislocation rate. As such, dual-mobility (DM) constructs are an attractive option to mitigate this complication. We analyzed survivorship free of revision, complications, and clinical outcomes of hemiarthroplasties conversion to THAs utilizing DM constructs compared with large femoral heads (≥36 mm). METHODS: Conversion of 16 hemiarthroplasties to THAs with a specific DM construct compared with 13 conversions utilizing large femoral heads (≥36 mm) from 2011 to 2014 were reviewed...
May 12, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28361019/results-of-single-stage-exchange-arthroplasty-with-retention-of-well-fixed-cement-less-femoral-component-in-management-of-infected-total-hip-arthroplasty
#5
Wael A Rahman, Hussain A Kazi, Jeffery D Gollish
AIM: To investigate success of one stage exchange with retention of fixed acetabular cup. METHODS: Fifteen patients treated by single stage acetabular component exchange with retention of well-fixed femoral component in infected total hip arthroplasty (THA) were retrospectively reviewed. Inclusion criteria were patients with painful chronic infected total hip. The patient had radiologically well fixed femoral components, absence of major soft tissue or bone defect compromising, and infecting organism was not poly or virulent micro-organism...
March 18, 2017: World Journal of Orthopedics
https://www.readbyqxmd.com/read/28295126/gluteus-maximus-advancement-flap-procedure-for-reconstruction-of-posterior-soft-tissue-deficiency-in-revision-total-hip-arthroplasty
#6
Benjamin F Ricciardi, Peter W Henderson, Alexander S McLawhorn, Geoffrey H Westrich, Mathias P Bostrom, Lloyd B Gayle
The current study describes the surgical technique and early outcomes of a gluteus maximus advancement flap procedure for the treatment of posterior soft tissue insufficiency among patients with complex revision total hip arthroplasty. This retrospective case series was conducted with a prospective, single-institution arthroplasty registry. Patients who underwent a gluteus maximus advancement flap procedure in the setting of revision total hip arthroplasty between January 2012 and January 2016 were eligible for inclusion (N=7)...
May 1, 2017: Orthopedics
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/28194713/use-of-compressive-osseointegration-endoprostheses-for-massive-bone-loss-from-tumor-and-failed-arthroplasty-a-viable-option-in-the-upper-extremity
#8
Krista A Goulding, Adam Schwartz, Steven J Hattrup, R Lor Randall, Donald Lee, Damian M Rispoli, Daniel M Lerman, Christopher Beauchamp
BACKGROUND: Endoprostheses using principles of compressive osseointegration have shown good survivorship in several studies involving the lower extremity; however, no series to our knowledge have documented the use of this technology in the management of massive bone loss in the upper limb. QUESTIONS/PURPOSES: (1) What proportion of upper extremity implants using compressive osseointegration fixation principles achieved durable short-term fixation, and what were the modes of failure? (2) What surgical complications resulted from reconstruction using this technique? METHODS: A multiinstitutional retrospective review identified nine patients (five women; four men) who underwent 13 endoprosthetic replacements between 2003 and 2014 using compressive osseointegration (Compliant(®) Pre-stress Device [CPS]; Biomet Inc, Warsaw, IN, USA) in the upper extremity, including two proximal humeri, two humeral diaphyses, seven distal humeri, and two proximal ulna...
June 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28109760/effectiveness-of-constrained-liner-use-during-harrington-hip-reconstruction-in-oncology-patient
#9
Deren T Bagsby, L Daniel Wurtz
BACKGROUND: Patients with destructive acetabular lesions are at high risk for morbidity. Harrington described reinforcing acetabular diseased bone with methylmethacrylate, supplemented by metal fixation, to allow total hip reconstruction. However, all published studies using this technique report dislocations. We believe that initial use of constrained liners would help alleviate dislocation risk, without increasing component loosening or polyethylene wear. METHODS: Sixty-eight patients who underwent Harrington hip arthroplasties for metastatic cancer from August 2005 to March 2015 were identified...
April 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28091768/total-hip-arthroplasty-instability-treatment-without-dual-mobility-cups-brief-overview-and-experience-of-other-options
#10
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/27967028/laser-propagation-measurements-in-long-scale-length-underdense-plasmas-relevant-to-magnetized-liner-inertial-fusion
#11
A J Harvey-Thompson, A B Sefkow, M S Wei, T Nagayama, E M Campbell, B E Blue, R F Heeter, J M Koning, K J Peterson, A Schmitt
We report experimental results and simulations showing efficient laser energy coupling into plasmas at conditions relevant to the magnetized liner inertial fusion (MagLIF) concept. In MagLIF, to limit convergence and increase the hydrodynamic stability of the implosion, the fuel must be efficiently preheated. To determine the efficiency and physics of preheating by a laser, an Ar plasma with n_{e}/n_{crit}∼0.04 is irradiated by a multi-ns, multi-kJ, 0.35-μm, phase-plate-smoothed laser at spot-averaged intensities ranging from 1...
November 2016: Physical Review. E
https://www.readbyqxmd.com/read/27847676/retentive-cup-arthroplasty-in-selected-hip-fracture-patients-a-prospective-series-with-a-minimum-3-year-follow-up
#12
Mustafa Yassin, Avraham Garti, Muhammad Khatib, Moshe Weisbrot, Dror Robinson
OBJECTIVE: To evaluate the efficacy of the use of retentive cup primary total hip replacement (THR) in high-dislocation risk subcapital fracture patients. METHODS: During the years 2008 to 2012, 354 patients with displaced subcapital fracture were operated at our institute. The patients were selected to undergo primary constrained THR according to the following criteria: (1) a preinjury grade 4 or more on the Functional Independence Measure mobility item "5. Locomotion: walking/wheelchair" and grade 4 is defined as "4...
December 2016: Geriatric Orthopaedic Surgery & Rehabilitation
https://www.readbyqxmd.com/read/27739571/short-term-results-with-a-constrained-acetabular-liner-in-patients-at-high-risk-of-dislocation-after-primary-total-hip-arthroplasty
#13
Kathryn Gill, Sarah L Whitehouse, Matthew J W Hubble, Matthew J Wilson
BACKGROUND: Dislocation following primary total hip arthroplasty (THA) is a complication with an incidence of 2%-5%. This study examines the clinical and radiological outcome of a constrained acetabular implant used in primary THA in high-risk patients to prevent dislocation. METHODS: 54 patients with 55 constrained implants for primary THA were reviewed clinically and radiologically. Oxford, Harris Hip and Charlson scores were recorded. RESULTS: 54 patients, with an average age of 83...
November 10, 2016: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/27456021/freedom-constrained-liner-for-the-treatment-and-prevention-of-dislocation-in-total-hip-arthroplasty
#14
M Karvonen, H Karvonen, M Seppänen, A Liukas, M Koivisto, K T Mäkelä
BACKGROUND AND PURPOSE: Dislocation is one of the most common complications following total hip arthroplasty. The aim of our study was to assess failure rate of the Biomet Freedom constrained liner (Biomet, Warsaw, IN, USA) either in revision surgery for recurrent dislocation, or as a preventive method in high dislocation risk patients. PATIENTS AND METHODS: We assessed retrospectively 105 consecutive surgical procedures in 103 patients where a Freedom constrained liner or cup was used in Turku University Hospital over a 7-year period from 2007 to 2014...
July 25, 2016: Scandinavian Journal of Surgery: SJS
https://www.readbyqxmd.com/read/27378637/outcome-of-revision-total-hip-arthroplasty-in-management-of-failed-metal-on-metal-hip-arthroplasty
#15
Wael A Rahman, Tomás Amenábar, Bandar M Hetaimish, Oleg A Safir, Paul R Kuzyk, Allan E Gross
BACKGROUND: This is a retrospective review of the functional outcomes and complications of revision total hip arthroplasty (THA) of failed metal-on-metal (MoM) hip arthroplasty. METHODS: A total of 20 revision THAs were performed in 19 patients. Of them, 2 cases were failed hip resurfacing, and 18 cases were failed (MoM) THA. The mean age at revision (THA) was 59.35 years (standard deviation [SD] 9.83). RESULTS: The mean follow-up was 45 months (SD 13...
November 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/27225703/corr-insights-%C3%A2-dual-mobility-or-constrained-liners-are-more-effective-than-preoperative-bariatric-surgery-in-prevention-of-tha-dislocation
#16
COMMENT
William G Hamilton
No abstract text is available yet for this article.
October 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27143732/revision-surgery-for-the-stiff-total-knee-arthroplasty
#17
J R Donaldson, F Tudor, J Gollish
AIMS: The aim of this study was to examine the results of revision total knee arthroplasty (TKA) undertaken for stiffness in the absence of sepsis or loosening. PATIENTS AND METHODS: We present the results of revision surgery for stiff TKA in 48 cases (35 (72.9%) women and 13 (27.1%) men). The mean age at revision surgery was 65.5 years (42 to 83). All surgeries were performed by a single surgeon. Stiffness was defined as an arc of flexion of < 70° or a flexion contracture of > 15°...
May 2016: Bone & Joint Journal
https://www.readbyqxmd.com/read/27132533/single-component-revisions-are-associated-with-dislocation-after-revision-total-hip-arthroplasty-at-intermediate-term-follow-up
#18
Roman C Stedman, Daniel Lim, Adeel Husain, Paul M Courtney, Charles L Nelson
PURPOSE: Dislocation is the most frequent complication following revision total hip arthroplasty (THA). Although several risk factors for dislocation in revision THA have been described, many cannot be modified at the time of surgery. Identifying modifiable risk factors for subsequent dislocation after revision THA provides opportunity for orthopedic surgeons to decrease instability. METHODS: A retrospective analysis of 203 consecutive revision THA procedures performed by a single surgeon with a minimum 2-year follow-up between May 2003 and June 2012 was performed...
May 16, 2016: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/27130648/dual-mobility-or-constrained-liners-are-more-effective-than-preoperative-bariatric-surgery-in-prevention-of-tha-dislocation
#19
COMPARATIVE STUDY
Philippe Hernigou, Matthieu Trousselier, François Roubineau, Charlie Bouthors, Charles Henri Flouzat Lachaniette
BACKGROUND: Obesity is associated with an increased risk of dislocation after total hip arthroplasty (THA). However, in patients with obesity, it is not known whether the risk is only in the early postoperative period or whether it persists several years after surgery, and whether having bariatric surgery before undergoing THA and/or receiving a specific device (such as a dual-mobility or constrained acetabular liner) is more effective in terms of decreasing the risk of dislocation. QUESTION/PURPOSES: (1) What is the cumulative risk of dislocation in patients with obesity after THA in the absence of a dual-mobility or constrained liner, and is this related to component positioning? (2) Does bariatric surgery before undergoing THA decrease dislocation risk in patients with obesity? (3) Are dual-mobility and constrained liners efficient in preventing dislocation in patients with obesity? METHODS: At our university-based practice, all surgeons adhered to the following treatment approaches: Before 2000 no dual-mobility implants or constrained liners were used for primary THAs...
October 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27101771/dual-mobility-articulations-for-patients-at-high-risk-for-dislocation
#20
Darren R Plummer, Jonathan M Christy, Scott M Sporer, Wayne G Paprosky, Craig J Della Valle
BACKGROUND: The purpose of this study was to evaluate the performance of dual-mobility articulations in patients at high risk for dislocation after revision total hip arthroplasty. METHODS: We reviewed the results of 36 consecutive revision total hip arthroplasties performed on patients considered high risk for instability. Indications for inclusion included abductor insufficiency, recurrent instability, failure of constrained liner, or inadequate intraoperative stability when trialing...
September 2016: Journal of Arthroplasty
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