Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"orthopaedic implants"”.
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Three dimensional printing of ceramic molds with accurate surface macro-textures for investment casting of orthopaedic implants
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
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Multi-scale structural design of titanium implants for improved osseointegration
Osseointegration success of bone-interfacing implants is reduced for many compromised patients, necessitating improved implant design. Though material and mechanical properties of titanium make it attractive for load-bearing dental and orthopaedic implants, limited advancements have been made to …
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Statistical Modeling of Knee Morphology and Material Properties Considering Diverse Populations
… avenue for improving the generalizability of orthopaedic implants is using Statistical Shape and Intensity Models (SSIMs), which can be used to incorporate patient variability directly into the orthopaedic medical device development workflow through population-based finite element …
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Optimising calcium phosphate cement formulations to widen clinical applications
The demand for reconstructive orthopaedic implants continues expanding at a reasonable pace as the incidence of fracture injuries and infectious diseases rises. There has been an increase in the clinical need for more effective synthetic bone graft materials due to the drawbacks of autogenous …
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Laser Powder Bed Fusion Additive Manufacturing of Fe-based Shape Memory Alloys for Biomedical Applications
… performance, and lifespan of the biodegradable implants. LPBF‐fabricated Fe–Mn–Si scaffolds tuned by powder type show that pre‐alloyed powders produce dense, uniform microstructures with high strength and fatigue resistance ideal for long‐term, load‐bearing implants, whereas mixed powders yield …
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Thermal spray of a drug delivery system onto femoral orthopaedic implant
… to apply hydroxyapatite coatings onto metallic implants for use in orthopaedic surgeries. The addition of HA coatings was successful in improving the performance of titanium implants. However, this type of implant has shown some limitations with regards to mechanical (implant loosening) and …
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Design of experiment analysis of high velocity oxy-fuel coating of hydroxyapatite
… to Plasma spray, the process currently used in orthopaedic implants. In this research Design of Experiment (DOE) models were developed to optimise the HVOF process for the deposition of HA through an optimised screening set of experiments. A preliminary process investigation was carried out …
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Surface engineering, characterisation and applications of synthetic polymers for tissue engineering and regenerative medicine. Investigation of the response of MG63 osteosarcoma cell line to modified surface topographies, mechanical properties and cell-surface interactions using different synthetic polymers fabricated in house with various topographical features
… engineering applications. The need for durable orthopaedic implants is on the rise to limit issues such as revision surgery. A promising pathway to enhance fixation is to accelerate the onset and rate of early cellular adhesion and bone growth through nanoscale surface topography at the implant …
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Modification of polymer surfaces to aid the attachment of cells derived from bone.
… attractive for biomaterials applications such as orthopaedic implants. However, both PS and PE have low surface energy, and it is well established that high-energy surfaces are more effective in promoting rapid cellular adhesion and spreading, whereas low energy surfaces do not. The overall …
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Design, control and error analysis of a fast tool positioning system for ultra-precision machining of freeform surfaces
… in advanced imaging and illumination systems, orthopaedic implants, high-power beam shaping applications, and other high-end scientific instruments. They give the designers greater ability to cope with the performance limitations commonly encountered in simple-shape designs. However, the …
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Investigation into the surface modification of Ti-6Al-4V to facilitate antimicrobial ionic silver integration for use in implantable orthopaedic devices
… alloy is the material of choice for implantable orthopaedic devices as it provides a favourable combination of biocompatibility, corrosion resistance and mechanical properties. The only drawback of titanium is that, owing to its bio-inertness, living tissue struggles to attach, creating an …
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The adoption of laser melting technology for the manufacture of functionally graded cobalt chrome alloy femoral stems
Total Hip Arthroplasty (THA) is an orthopaedic procedure that is performed to reduce pain and restore the functionality of hip joints that are affected by degenerative diseases. The outcomes of THA are generally good. However, the stress shielding of the periprosthetic femur is a factor that can …