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Orthopaedic implant

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https://www.readbyqxmd.com/read/27926686/orthopaedic-trauma-care-capacity-assessment-and-strategic-planning-in-ghana-mapping-a-way-forward
#1
Barclay T Stewart, Adam Gyedu, Gavin Tansley, Dominic Yeboah, Forster Amponsah-Manu, Charles Mock, Wilfred Labi-Addo, Robert Quansah
BACKGROUND: Orthopaedic conditions incur more than 52 million disability-adjusted life years annually worldwide. This burden disproportionately affects low and middle-income countries, which are least equipped to provide orthopaedic care. We aimed to assess orthopaedic capacity in Ghana, describe spatial access to orthopaedic care, and identify hospitals that would most improve access to care if their capacity was improved. METHODS: Seventeen perioperative and orthopaedic trauma care-related items were selected from the World Health Organization's Guidelines for Essential Trauma Care...
December 7, 2016: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/27925441/anodized-3d-printed-titanium-implants-with-dual-micro-and-nano-scale-topography-promote-interaction-with-human-osteoblasts-and-osteocyte-like-cells
#2
Karan Gulati, Matthew Prideaux, Masakazu Kogawa, Luis Lima-Marques, Gerald J Atkins, David M Findlay, Dusan Losic
The success of implantation of materials into bone is governed by effective osseointegration, requiring biocompatibility of the material and the attachment and differentiation of osteoblastic cells. To enhance cellular function in response to the implant surface, micro- and nano-scale topography have been suggested as essential. In this study, we present bone implants based on 3D-printed titanium alloy (Ti6Al4V), with a unique dual topography composed of micron-sized spherical particles and vertically aligned titania nanotubes...
December 7, 2016: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/27922983/current-construct-options-for-revision-of-large-acetabular-defects-a-systematic-review
#3
Marieke Baauw, Miranda L van Hooff, Maarten Spruit
BACKGROUND: Many treatment options are available for the revision of large acetabular defects. Debate continues as to which technique is most effective. METHODS: A systematic review was performed according to the Meta-analysis of Observational Studies in Epidemiology (MOOSE) guidelines to evaluate the effectiveness of interventions for large acetabular defects. Quality assessment was performed next with use of 8 items of the Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) checklist for reports of observational studies...
November 8, 2016: JBJS Reviews
https://www.readbyqxmd.com/read/27918885/mutant-ccl2-protein-coating-mitigates-wear-particle-induced-bone-loss-in-a-murine-continuous-polyethylene-infusion-model
#4
Akira Nabeshima, Jukka Pajarinen, Tzu-Hua Lin, Xinyi Jiang, Emmanuel Gibon, Luis A Córdova, Florence Loi, Laura Lu, Eemeli Jämsen, Kensuke Egashira, Fan Yang, Zhenyu Yao, Stuart B Goodman
Wear particle-induced osteolysis limits the long-term survivorship of total joint replacement (TJR). Monocyte/macrophages are the key cells of this adverse reaction. Monocyte Chemoattractant Protein-1 (MCP-1/CCL2) is the most important chemokine regulating trafficking of monocyte/macrophages in particle-induced inflammation. 7ND recombinant protein is a mutant of CCL2 that inhibits CCL2 signaling. We have recently developed a layer-by-layer (LBL) coating platform on implant surfaces that can release biologically active 7ND...
November 24, 2016: Biomaterials
https://www.readbyqxmd.com/read/27916532/primary-total-hip-arthroplasty-in-catalonia-what-is-the-clinical-evidence-that-supports-our-prosthesis
#5
D Chaverri-Fierro, L Lobo-Escolar, M Espallargues, O Martínez-Cruz, L Domingo, M Pons-Cabrafiga
INTRODUCTION: The implementation of National Prostheses Registries allows us to obtain a large amount of data and make conclusions in order to improve the use of them. Sweden was the first country to implement a National Prostheses Registry in 1979. Catalonia has been doing this since 2005. The aim of our study is to analyse the evidence that supports primary total hip replacement in Catalonia in the last 9 years, based on the Arthroplasty Registry of Catalonia (RACat). MATERIAL AND METHODS: A review of the literature was carried out of the prosthesis (acetabular cups/stems) reported in the RACat between the period 2005 to 2013 in the following databases: ODEP (Orthopaedic Data Evaluation Panel), TRIP database, PubMed, and Google Scholar...
December 1, 2016: Revista Española de Cirugía Ortopédica y Traumatología
https://www.readbyqxmd.com/read/27897182/design-and-development-of-novel-antibacterial-ti-ni-cu-shape-memory-alloys-for-biomedical-application
#6
H F Li, K J Qiu, F Y Zhou, L Li, Y F Zheng
In the case of medical implants, foreign materials are preferential sites for bacterial adhesion and microbial contamination, which can lead to the development of prosthetic infections. Commercially biomedical TiNi shape memory alloys are the most commonly used materials for permanent implants in contact with bone and dental, and the prevention of infections of TiNi biomedical shape memory alloys in clinical cases is therefore a crucial challenge for orthopaedic and dental surgeons. In the present study, copper has been chosen as the alloying element for design and development novel ternary biomedical Ti‒Ni‒Cu shape memory alloys with antibacterial properties...
November 29, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27895899/oxidatively-degradable-poly-thioketal-urethane-ceramic-composite-bone-cements-with-bone-like-strength
#7
Madison A P McEnery, Sichang Lu, Mukesh K Gupta, Katarzyna J Zienkiewicz, Joseph C Wenke, Kerem N Kalpakci, Daniel Shimko, Craig L Duvall, Scott A Guelcher
Synthetic bone cements are commonly used in orthopaedic procedures to aid in bone regeneration following trauma or disease. Polymeric cements like PMMA provide the mechanical strength necessary for orthopaedic applications, but they are not resorbable and do not integrate with host bone. Ceramic cements have a chemical composition similar to that of bone, but their brittle mechanical properties limit their use in weight-bearing applications. In this study, we designed oxidatively degradable, polymeric bone cements with mechanical properties suitable for bone tissue engineering applications...
2016: RSC Advances
https://www.readbyqxmd.com/read/27895372/diagnostic-value-of-sinus-tract-culture-versus-intraoperative-bone-culture-in-patients-with-chronic-osteomyelitis
#8
Saifullah Soomro, Muhammad Ather Siddiqi, Intikhab Taufiq
To compare the organisms isolated from the sinus tract culture and intraoperative bone culture in patients with chronic osteomyelitis. This cross sectional prospective study was conducted from February 2015 to March 2016. Ninety consecutive patients were enrolled in study (n=90). Inclusion criteria were patients with either sex, any age, chronic osteomyelitis having discharging sinus. Sample from sinus tracts and bone were taken through standardized aseptic technique and organism were cultured. There were 62 males and 28 females, male to female ratio 3:1, mean age was 40 years...
October 2016: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/27890891/mid-term-clinical-results-of-versys-hip-system-zimmer-uncemented-total-hip-replacement-arthroplasty
#9
Hidemi Kawaji, Takuya Uematsu, Naoya Hoshikawa, Hiroshi Watanabe, Shinro Takai
: Recent reports suggest that uncemented total hip replacement arthroplasty (THR) results in favorable short- to mid-term clinical results. In the present study, we assessed the mid-term clinical results of VerSys Hip System uncemented THR at our hospital. MATERIALS AND METHODS: We studied patients who received THR using VerSys Hip System and who could be followed-up more than 3 years. Clinical records were used to retrospectively identify patient characteristics, which included age, gender, disease requiring THR, preoperative and postoperative pain score of the Japan Orthopaedic Association scoring system, range of motion in flexion and abduction, operating time, intraoperative complication, and additional operation or revision surgery...
2016: Journal of Nippon Medical School, Nippon Ika Daigaku Zasshi
https://www.readbyqxmd.com/read/27890730/cathodic-voltage-controlled-electrical-stimulation-of-titanium-for-prevention-of-methicillin-resistant-staphylococcus-aureus-and-acinetobacter-baumannii-biofilm-infections
#10
Mary Canty, Nicole Luke-Marshall, Anthony Campagnari, Mark Ehrensberger
: Antibiotic resistance of bacterial biofilms limits available treatment methods for implant-associated orthopaedic infections. This study evaluated the effects of applying cathodic voltage-controlled electrical stimulations (CVCES) of -1.5V and -1.8V (vs. Ag/AgCl) to coupons of commercially pure titanium (cpTi) incubated in cultures of methicillin-resistant Staphylococcus aureus (MRSA) and Acinetobacter baumannii (A. baumannii) as a method of preventing bacterial attachment. Stimulations were applied for 2, 4, and 8 hours and coupon-associated and planktonic colony-forming units (CFU) were enumerated following stimulation...
November 24, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/27878735/a-multi-material-coating-containing-chemically-modified-apatites-for-combined-enhanced-bioactivity-and-reduced-infection-via-a-drop-on-demand-micro-dispensing-technique
#11
Poon Nian Lim, Zuyong Wang, Lei Chang, Toshiisa Konishi, Cleo Choong, Bow Ho, Eng San Thian
Prevention of infection and enhanced osseointegration are closely related, and required for a successful orthopaedic implant, which necessitate implant designs to consider both criteria in tandem. A multi-material coating containing 1:1 ratio of silicon-substituted hydroxyapatite and silver-substituted hydroxyapatite as the top functional layer, and hydroxyapatite as the base layer, was produced via the drop-on-demand micro-dispensing technique, as a strategic approach in the fight against infection along with the promotion of bone tissue regeneration...
January 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/27878623/history-of-internal-fixation-part-1-early-developments-with-wires-and-plates-before-world-war-ii
#12
REVIEW
Philippe Hernigou, Jacques Pariat
Though the date at which an orthopaedic implant was first used cannot be ascertained with any certainty, the fixation of bone fracture using an iron wire was reported for the first time in a French manuscript in 1775. The first techniques of operative fracture treatment were developed at the end of the 18th and in the beginning of the 19th centuries. The use of cerclage wires to fix fractures was the most frequent fixation at this time. The French Berenger-Feraud (1832-1900) had written the first book on internal fixation...
November 23, 2016: International Orthopaedics
https://www.readbyqxmd.com/read/27872981/dual-mobility-arthroplasty-failure-a-rationale-review-of-causes-and-technical-considerations-for-revision
#13
Philippe Hernigou, Arnaud Dubory, Damien Potage, François Roubineau, Charles Henri Flouzat Lachaniette
PURPOSE: Dual-mobility arthroplasty is an alternative to conventional total hip arthroplasty (THA) in appropriately selected, active adults with degenerative, necrotic or post-traumatic hip disease or with revision hip arthroplasty. Numerous papers have been published with results of dual-mobility arthroplasty, but there have been no comprehensive literature reviews that summarise the most recent findings and help the orthopaedic surgeon facing different scenarios in which revision of one or both components of a dual-mobility arthroplasty is indicated...
November 21, 2016: International Orthopaedics
https://www.readbyqxmd.com/read/27872380/management-of-distal-tibial-metaphyseal-bone-defects-with-an-intramedullary-nitinol-scaffold-a-novel-technique
#14
Samuel E Ford, J Kent Ellington
: Difficult problems that are faced when reconstructing severe pilon fractures include filling metaphyseal defects and supporting an impacted, multifragmented articular surface. Supplements to plate fixation currently available in a surgeon's armamentarium include cancellous bone autograft, structural bone allograft, demineralized bone matrix, and calcium-based cements. Cancellous autograft possesses limited inherent mechanical stability and is associated with graft site morbidity. Structural allografts incorporate inconsistently and are plagued by late resorption...
November 20, 2016: Foot & Ankle Specialist
https://www.readbyqxmd.com/read/27870675/comanagement-and-gainsharing-opportunities-for-independent-physicians
#15
Chris McBride, Peter L Althausen
Gainsharing and comanagament programs are both successful means of achieving physician buy-in for all cost containment programs in Orthopaedic Trauma. Under comanagement agreements, physicians are reimbursed for their time and intellectual efforts in program and algorithm creation. The cost is minimal for the hospital in return for the millions of dollars in savings they achieve. Gainsharing models can incentivize physicians to quickly adopt cost-effective implant choices, care plans, and program development...
December 2016: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/27870672/the-clinical-and-economic-impact-of-generic-locking-plate-utilization-at-a-level-ii-trauma-center
#16
Austin Mcphillamy, Taylor P Gurnea, Alastair E Moody, Christopher G Kurnik, Minggen Lu
OBJECTIVES: In today's climate of cost containment and fiscal responsibility, generic implant alternatives represent an interesting area of untapped resources. As patents have expired on many commonly used trauma implants, generic alternatives have recently become available from a variety of sources. The purpose of this study was to examine the clinical and economic impact of a cost containment program using high quality, generic orthopaedic locking plates. The implants available for study were anatomically precontoured plates for the clavicle, proximal humerus, distal radius, proximal tibia, distal tibia, and distal fibula...
December 2016: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/27870671/surgeon-attitudes-regarding-the-use-of-generic-implants-an-ota-survey-study
#17
Justin A Walker, Peter L Althausen
OBJECTIVES: To determine the role of generic orthopaedic trauma implants in the current orthopaedic trauma market, as perceived by OTA members, and investigate potential hurdles to the use of generic implants and other cost-containment measures. DESIGN: Survey study. SETTING: Not applicable. PARTICIPANTS: All active OTA members with valid e-mail addresses were invited to participate. INTERVENTION: Participants completed a brief online survey with questions regarding participation in cost-containment and incentive programs, industry relationships, generic implant use, and the role of surgeons in cost containment...
December 2016: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/27870670/operating-room-supply-costs-in-orthopaedic-trauma-cost-containment-opportunities
#18
Taylor P Gurnea, Wesley P Frye, Peter L Althausen
In the current health care environment, cost containment is more important than ever. Most physicians currently are unaware of the cost of operating room supplies. A large amount of waste occurs secondary to lack of knowledge and absence of physician incentives for cost saving. Many of the decisions for supply use can be based on good scientific evidence, which supports specific cost saving measures. Careful attention to blood utilization and use of tranexamic acid has the potential to save millions in the hip fracture treatment and arthroplasty treatments...
December 2016: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/27870669/operating-room-efficiency-benefits-of-an-orthopaedic-traumatologist-at-a-level-ii-trauma-center
#19
Peter L Althausen, Justin R Kauk, Steven Shannon, Minggen Lu, Timothy J O'Mara, Timothy J Bray
OBJECTIVES: Fellowship-trained orthopaedic traumatologists are presumably taught skill sets leading to "best practice" outcomes and more efficient use of hospital resources. This should result in more favorable economic opportunities when compared with general orthopaedic surgeons (GOSs) providing similar clinical services. The purpose of our study was to compare the operating room utilization and financial data of traumatologists versus GOSs at a level II trauma center. DESIGN: Retrospective review...
December 2016: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/27859535/marker-based-technique-for-visualizing-radiolucent-implant-components-in-radiographic-imaging
#20
Kimberley Lam-Tin-Cheung, Xunhua Yuan, Hristo N Nikolov, Brent A Lanting, Douglas D Naudie, Matthew G Teeter
Radiography is the predominant imaging modality used for the in-vivo analysis of orthopaedic implants. A major disadvantage of radiography is that the articulating joint components that are composed of radiolucent polyethylene cannot be directly visualized. Current strategies attempt to circumvent this limitation by estimating component positions and simplifying the joint system, however, these approaches lead to a number of associated errors. Thus, this study provides a method to enable the visualization of the polyethylene component of total knee replacements in radiographic images...
November 9, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
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