نتایج جستجو برای: orthopaedic implant
تعداد نتایج: 58414 فیلتر نتایج به سال:
s/Conference ProceedingsAschoff, H. Evaluation of 10 years of experience with endo-exo-prostheses: Highlightsand pitfalls of osseointegration, transcutaneous implants for rehabilitation ofamputees. In: 2012 Orthopaedic Surgical Osseointegration Society 4th InternationalAdvances in Orthopaedic Osseointegration Conference Syllabus Abstracts.Orthopaedic Surgical Osseointegratio...
Current bone fixation technology which uses stainless steel wires known as Kirschner wires for fracture fixing often causes infection and reduced skeletal load resulting in implant failure. Creating new wires with drug-eluting properties to locally deliver drugs is an appealing approach to address some of these problems. This study presents the use of titanium [Ti] wires with titania nanotube [...
Special Surgery focuses on the application of sound principles in orthopaedic care. The principles emerging in the promising advances in knee joint restoration and preservation are evident in the first case: Scott Rodeo uses osteotomy and allograft transplants to restore alignment, the knee articular surface and meniscus in a young female athlete. The next case involves the knee of a patient wi...
Applications of magnesium alloys as biodegradable orthopaedic implants are critically dependent on the mechanical integrity of the implant during service. In this study, the mechanical integrity of an AZ91 magnesium alloy was studied using a constant extension rate tensile (CERT) method. The samples in two different geometries that is, circumferentially notched (CN), and circumferentially notch...
The increasing use of orthopedic implants and, in particular, of hip and knee joint replacements for young and active patients, has stimulated interest and concern regarding the chronic, long-term effects of the materials used. This review focuses on the current knowledge of the adverse biologic reactions to metal particles released from orthopaedic implants in vivo and in vitro. More specifica...
Local antibiotic delivery with antibiotic loaded acrylic bone cement has been used extensively in the management of chronic osteomyelitis and implant related infections. Though newer drug delivery vehicles are being investigated, it remains the most widely used local antibiotic delivery vehicle in orthopaedic surgery. Self-made antibiotic loaded bone cement beads, which are cheaper and antibiot...
Metastatic adenocarcinoma after intramedullary fixation of a tibial fracture: A report of two cases.
We present two cases of metastatic lung cancer which occurred at the site of a previously united tibial fracture. Both patients were treated with a locked intramedullary nail. The patients presented with metastases at the site of their initial fracture approximately 16 and 13 months after injury respectively. We discuss this unusual presentation and review the relevant literature. We are unawar...
In this study, a new Kirschner wire (K-wire) design was performed to fix bone fractures in orthopedic surgery. The numerical analyses were completed based on the finite element method (FEM), using Deform-3D software. kind of FEM, friction, material model, load and boundary conditions must be defined correctly. It has been seen that is more advantageous terms implant failure or stability fractur...
Ferromagnetic shape memory alloys (FSMAs) are a new class of magnetic field-actuated active materials with no current commercial applications. By applying a magnetic field of around 0.4 T, they can exert a stress of approximately 1.5 MPa, exhibiting a strain of up to 6%. This thesis evaluates their technical and commercial feasibility in orthopaedic applications. Remote actuation is a key advan...
The growth of spinal implant and orthobiologic technologies over the last several years is increasing in tempo (Figure 1) and fast approaching the US hip and knee markets in annual dollar sales. During this time, a number of start-up and established medical device manufacturers have focused increasing resources on solutions for spinal problems. The role of the orthopaedic and neurosurgeon in th...
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