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Rationale: Poly (methyl methacrylate) (PMMA) bone cement is one of the most commonly used biomaterials for augmenting/stabilizing osteoporosis-induced vertebral compression fractures (OVCFs), such as percutaneous vertebroplasty (PVP) and balloon kyphoplasty (BKP). However, its clinical applications are limited by its poor performance in high compressive modulus and weak bonding to bone.
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Nov 24, 2011 Although self-curing polymethyl methacrylate (PMMA) bone cements have been used for fixation of the implants for the past 50 years, the composition of the cements has remained essentially unaltered. The ultra-long clinical and radiographic success of cemented THA may depend on the mechanical and chemical longevity of the bone cements in vivo.
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Oct 10, 2020 Poly (methyl methacrylate) (PMMA)-based bone cements (BCs) can be defined as a family of materials that consist of powder and liquid phases which after mixing form a plastic paste that can self-set once implanted in the human body.
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Cranioplasty for the surgical correction of cranial defects is often performed using polymethyl methacrylate (PMMA), or bone cement. Immediately prior to PMMA application, a liquid monomer form (methylacrylate) and a benzoyl peroxide accelerator are mixed resulting in polymerization, an exothermic r …. Potential neurotoxic effects of polymethylmethacrylate during cranioplasty.
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Aug 21, 2019 Poly (methyl methacrylate) (PMMA) bone cement is the most widely used grouting material in the joint arthroplasties and vertebroplasties. The present investigation has been carried out to scavenge the radicals and monomer by addition of an antioxidant to minimize the toxicity of …
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Feb 11, 2021 Poly (methyl methacrylate) (PMMA) bone cement is widely used for anchoring joint arthroplasties. In cement brands approved for these procedures, micron-sized particles (usually barium sulphate, BaSO 4) act as the radiopacifier. It has been postulated that these particles act as sites for crack initiation and subsequently cement fatigue.
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Apr 01, 2014 This procedure employs polymethyl methacrylate (PMMA) bone cement to secure the prosthesis to the bone and distribute stresses more evenly around the implant and is currently associated with a failure rate of approximately 10% after 15 years (Breusch and Malchau, 2005, Lewis, 1997).
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PMMA depolymerization at 300–400 C produces volatile monomers of methyl methacrylate (MMA) ( Holland and Hay, 2001 ). PMMA is used in biomaterial applications such as bone cement, lenses, bone substitutes, and drug delivery systems. It is used to remove …
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Sep 15, 2018 Among these materials, polymethyl methacrylate (PMMA) bone cement is the most commonly used in the clinic and has a number of advantages: early mechanical resistance, sufficient ability to strengthen and stiffen the vertebral body, easy to perfuse, and relatively low-cost .
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Jan 09, 2021 As PMMA bone cement rarely diffuses into the trabecular bone, the locking effect between the bone and bone cement is insufficient . Given the characteristics of KD, spontaneous fracture of the vertebral body, which could be associated with the obvious force exerted by the bone tissue near the cement, as well as re-compression of the vertebral ...
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The filling material is polymethyl methacrylate (PMMA) bone cement. (2) Preoperative Preparation. Routine physical examination and laboratory examination, chest radiograph, electrocardiogram, and ...
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bone cement graininess polymethyl methacrylate methacrylate bone Prior art date 2007-01-26 Application number CN2008100047375A Other languages Chinese (zh) Other versions CN101229391A (en Inventor Ki D 屈恩 S 福格特 H 比希纳 Original Assignee 贺利氏古萨有限公司 Priority date (The priority date is an assumption and is not a ...
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May 26, 2021 Polymethyl methacrylate (PMMA) bone cement is a commonly used filling material in orthopedic surgery. Its good and stable performances make it the most widely used in all kinds of bone cement. With the advancement of the application and research of PMMA bone cement by surgeons, its disadvantages such as non-degradation and non-bioactivity are ...
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Every year, millions of people in the world get bone diseases and need orthopedic surgery as one of the most important treatments. Owing to their superior properties, such as acceptable biocompatibility and providing great primary bone fixation with the implant, polymethyl methacrylate (PMMA)-based bone cements (BCs) are among the essential materials as fixation implants in different ...
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Jan 16, 2020 Poly(methyl methacrylate) bone cement composited with mineralized collagen for osteoporotic vertebral compression fractures in extremely old patients Kefeng Luo, Kefeng Luo Department of Orthopaedic Surgery, The Affiliated Hospital of Medical School of Ningbo University
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Nov 01, 2015 Antibiotic-loaded bone cement (ALBC) is commonly used for the prevention and treatment of orthopedic infections (Zalavras et al. 2004; Cui et al. 2007). ALBC serves to maintain joint space and/or fill bone voids, but also delivers high doses of antibiotics locally.
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on of exposed mucous membranes. The purpose of this study is to investigate the perceptions of PMMA cement exposure during pregnancy in female orthopaedic surgeons because it influences (1) the currently held beliefs and practices and (2) clinical and career choices. Methods: A 23-question survey was distributed via e-mail to all active members of the Ruth Jackson Orthopaedic Society and the ...
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OBJECTIVE: To evaluate whether the self-blood has influence on the molding process of polymethyl methacrylate (PMMA) bone cement, and to make sure whether it is valuable for the clinical practice. METHODS: An in vitro study was performed to evaluate the prolonging-effect of self-blood on PMMA bone cement.
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bone cement calcium sulfate polymethyl methacrylate spacer equivalent Prior art date 2007-04-24 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Granted Application number EP08007307A Other languages ...
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Carboxyl functionalised MWCNT/polymethyl methacrylate bone cement for orthopaedic applications Ross W Ormsby, Mircea Modreanu, Christina A Mitchell, and Nicholas J Dunne Journal of Biomaterials Applications 2014 29 : 2 , 209-221
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Polymethyl methacrylate (PMMA)-cement should be favoured, since calcium phosphate cement showed inferior biomechanical properties and less effect …
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Rationale: Poly (methyl methacrylate) (PMMA) bone cement is one of the most commonly used biomaterials for augmenting/stabilizing osteoporosis-induced …
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48-hour idling test machine before leaving the factory. You can take the materials to the factory test machine. We will customize the solution according to your needs. Free Installation.
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