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Showing 1 to 14 of 14 for “"hip implants"”.
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Evaluation of Stress and Fatigue in Femoral Hip Implants
… life prediction process used to design femoral hip implants.</p> <p>The use of a validated FEA is needed to accurately determine the long-term survivorship success of an orthopaedic implant. This study investigates the ISO-7206-4 (2010) distal fatigue setup using a common implant configuration. …
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Development and characterization of bioceramic coatings for medicall and dental applications
… marketed as a coating for the metal shafts of hip implants as well as dental screws and other endoprostheses with the expectation of improved bonding to bone through osseointegration. Coatings prepared by the more widely used and commercial method, plasma spraying technique suffer from poor …
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Delamination-fretting wear failure evaluation at HAp-Ti-6Al-4V interface of artificial hip implant
… an extensive application of titanium artificial hip implants. However, titanium alloys (Ti-6Al-4V) cannot directly adhere with human bone due to bio-compatibility issue. Thus, Hydroxyapatite (HAp:Ca10(PO4)(OH)2) coating which consists of main composition of human bone is plasma sprayed on …
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Immune system involvement in metal hip implant failure
… disease, especially in the elderly.Total Hip Replacement (THR) is a last resort treatment for hip OA and Metal-on-Metal (MoM) THR was used commonly for its durability. While this is an effective treatment for many, around 12% of hip implants were revised in 2012. MoM articulations had poor …
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The effects of simulated inflammatory conditions on the corrosion and fretting corrosion of CoCrMo alloy
… traditional understanding of the relationship between biology and corrosion of hip implants. To better understand the role biology may play in the corrosion of CoCrMo-based implants, this study explored the mechanism of ICIC on CoCrMo alloy and investigated how simulated inflammatory (SI) …
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An analytical study of the role of selected metal ions in bone and joint diseases
… tissue adjacent to titanium-aluminium-vanadium hip implants was investigated. The production of the dark blue/black complex seen in the affected tissue was simulated in vitro by synthetic pathways. The speciation of the titanium (III)/titanium (IV) complexes in the biological matrices was …
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Computer-Generated Holography for Areal Additive Manufacture
… sustainability. Widely used in applications from hip implants to jet engines, AM remains the domain of experts due to the material and thermal challenges encountered. AM in metals is dominated by Laser Powder Based Fusion (L-PBF). Powder is spread in layers 10s of microns thick and selectively …
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Validation of numerical prediction of bone ingrowth into cementless implants
… an estimated 5 million people had undergone hip replacements. Although relatively successful, the cemented components had some problems, and this led to the development of cementless implants. These implants depend on the ingrowth of bone into a porous coating, to produce a durable method of …
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Design, Material and Surgical Assembly Effects on Fretting Corrosion Behavior of Modular Tapers in Orthopedic Implants
… out to improve the understanding of the relationship between MACC, local tissue reaction, taper design and material combination.</p> <p>Thus, with continued concerns surrounding fretting corrosion and MACC of modular taper junctions there is a continuing need to develop appropriate in vitro tests …
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Retrieval Analysis of Necropsy Total Hip Replacements: Considerations Beyond the Implant
<p>Introduction. Total hip arthroplasty (THA) surgery is one of the most commonly performed and successful orthopedic procedures in the United States. More than 300,000 primary THAs and 40,000 revision THAs performed in the United States every year. While the need for revision surgeries can stem …
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Experimental and Numerical Investigation of the Micromechanical Behavior of Selective Laser Melted Ti-6Al-4V Cellular Lattices for Biomedical Applications
… since, compared to traditional fully dense implants, although more complex to produce and with less predictable properties, implants with a highly porous structure can be manufactured to match the bone stiffness and at the same time favor bone ingrowth and regeneration. The development of …
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Primary stability in cementless total hip replacement: measurement techniques and aided-surgery
Primary stability of stems in cementless total hip replacements is recognized to play a critical role for long-term survival and thus for the success of the overall surgical procedure. In Literature, several studies addressed this important issue. Different approaches have been explored aiming to …