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 20 of 27 for “"intramedullary"”.
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Intramedullary nailing of tibial non-unions using the suprapatellar approach: a case series
… diaphyseal non-unions of the tibia, including intramedullary (IM) nailing. An infrapatellar entry point with the knee in deep flexion can make this procedure challenging, especially with associated deformity or an obliterated canal. The suprapatellar approach allows nail insertion with the knee …
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Development of a magnetic targeting device applied to interlocking of distal intramedullary nail screw holes
… States. Internal fixation of long bones using intramedullary nails (IMN) has decreased incidence of non-union, allowed shorter hospitalization time, and earlier weight bearing for the patient compared to other fixation methods. Orthopedic surgeons have expressed that one of the most difficult …
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An investigation into the intramedullary pressure rise during femoral nailing: does the level and type of fracture determine peak pressures during the procedure?
… established. Some of the acute complications of intramedullary manipulation and nailing are fat embolism syndrome, pulmonary dysfunction and Adult Respiratory Distress Syndrome (ARDS). One of the causes of fat embolism is a raised intramedullary pressure. Investigators have shown the direct …
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Intramedullary nailing of open tibia and femur fractures through the supra & infrapatellar approach. Is septic arthritis a real concern?
… in the knee following the utilisation of intramedullary nailing techniques. These techniques encompass the supra/infrapatellar approach during tibial nailing and the retrograde approach during femoral nailing. This potential risk stems from the mechanical bridging of the knee joint in both …
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“Removing the nail from the coffin'' outcomes of intramedullary nailing of femur fractures: a comparison of anterograde- and retrograde nails
Intramedullary (IM) nailing for femoral shaft fractures is the current most effective, gold-standard treatment modality for femoral shaft fractures in the adult population. In the past, intramedullary femur nails were primarily performed utilising the anterograde approach (AFN). Recently, the …
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Surgical treatment of cavernous malformation in spinal cord
Intramedullary CMs accounts for approximately 3-5% of all CMs of the CNS and 5%–12% of all spinal cord vascular lesions. The decision between conservative management and surgical treatment of intramedullary CMs is discussed controversially and the opinions diverge. The choice of microsurgical …
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Radiographic Union Score for Tibia (RUST) scoring system in adult diaphyseal femoral fractures treated with intramedullary nailing: an assessment of interobserver and intraobserver reliability
… in diaphyseal femoral fractures treated with intramedullary (IM) nailing. Patients and Methods A total of 60 sets of anteroposterior (AP) and lateral radiographs of diaphyseal femoral fractures treated by reamed IM nailing were randomly selected from a prospectively collected database. The 60 …
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A Virtual Method for Establishing Femoral Stem Position in Total Hip Arthroplasty
… a custom automated workflow to segment the intramedullary geometry and extract anatomic parameters from cadaveric femurs and to create an automated workflow for the implantation and evaluation of femoral stem positions.</p>
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Statistical Shape Modeling to Quantify Variation in the Proximal Humeral Anatomy
<p>The fit of the humeral prosthesis to the intramedullary canal and the replication of the anatomic humeral head center are important factors in Total Shoulder Arthroplasty (TSA). The objective of this thesis was to develop a Statistical Shape Model (SSM) of the cortical and cancellous bone …
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Fracture healing : the effects of local insulin delivery via calcium sulfate and tricalcium phosphate
… This is the first study to examine local intramedullary insulin delivery to the fracture site and its effect upon the normal fracture healing process. Preceding results show that when administered at the fracture site of the impaired fracture healing model of the diabetic BB Wistar rat, …
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A Feasible Method to Evaluate RF-Induced Heating Behavior of Passive Orthopedic Implants in Human Body
… such bone plates, hip prosthesis, and tibia intramedullary nails, in 1.5T and 3T magnetic resonance (MR) environment. Comparison results of RF-induced heating between phantom and human body are conducted to show the disadvantages of phantom. In order to study the mechanism of RF-induced …
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Biochemical Changes in the Devascularized Femoral Head
… isotopes, venography, arteriography and intramedullary pressure determinations. None of these methods have proved entirely satisfactory.</p> <p>The purpose of this investigation was to determine some of the biochemical changes taking place in the devascularized femoral head. Nineteen dogs …
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Induktion und Prophylaxe Implantat assoziierter Knocheninfektionen am Modell eines antiinfektiv beschichteten Marknagels
… bone infections using an antibacterial-coated intramedullary nail – an experimental rabbit model Despite modern peri-operative antimicrobial prophylaxis, bone infections still represent dangerous complications in orthopedic and trauma surgery. Bacterial colonization of implanted material is the …
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Development of a Computational Approach to Assess Hip Fracture and Repair: Considerations of Intersubject and Surgical Alignment Variability
… of fracture and are typically caused by a fall. Intramedullary osteosynthesis is a common surgical practice to repair intertrochanteric fractures, but revisions are often required. The work presented in this thesis aims to improve the realism and fidelity of computational models of hip fracture, …
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The Role of Bisphosphonates and Osteoblast Lineage Cells in Promoting Osteogenic and Angiogenic Processes Necessary for Bone Repair
… cKO mice demonstrated significant impairments in intramedullary bone formation and angiogenesis following cortical defect. These data suggest that VEGFA from early osteolineage cells (Osx+) but not mature osteoblasts/osteocytes (Dmp1+) is critical at the time of bone injury for rapid periosteal …
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Evaluation of a Novel Self-Assembled Nanocoating in Promoting Bone On-growth and Apposition on Metal
… were implanted bilaterally in the distal femoral intramedullary canals. Each animal received one coated implant in one leg and one uncoated implant in the other leg. Cylindrical implants were implanted in 9 rabbits per time point. Additionally at each time-point, 2 rabbits were implanted with …
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Marknagelosteosynthese : initiale Durchblutungsstörung der Schafstibia an verschiedenen anatomischen Lokalisationen
In der Untersuchung wurde ein Bohrsystem mit vertieften Spannuten und reduziertem Antriebswellendurchmesser mit dem herkömmlichen AO/ASIF Bohrsystem und der ungebohrten Marknagelung bezüglich der initialen kortikalen Durchblutungsstörung im gesamten Verlauf der Tibia verglichen. <br> …
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Incidence and treatment modality trends in pediatric tibial fractures: a PHIS database study
… and casting. Surgical alternatives include intramedullary (IM) nailing, open reduction and internal fixation (ORIF), and external fixation. The use of operative treatment for pediatric tibial shaft fractures is indicated for older skeletally mature patients and for complex injury …
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Der Einfluss von Spülen und Absaugen auf die biologische Reaktion nach Markraumbohrung
Ziel der Arbeit war die Bewertung des „Reamer Irrigator Aspirator“-Prototyps in Bezug auf seine Effektivität betreffend der Reduktion der Fettverpressung und seine Auswirkungen auf die Durchblutung und Frakturheilung. Als Vergleich diente der ungebohrte AO-Nagel, als Modell die frakturierte …
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