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 44 for “"Femoral head"”.
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Biochemical Changes in the Devascularized Femoral Head
… many attempts to determine the viability of the femoral head after trans cervical fracture of the neck of the femur. These methods have included the use of radioactive isotopes, venography, arteriography and intramedullary pressure determinations. None of these methods have proved entirely …
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Analysis of the microarchitecutre of the human femoral head using micro-computertomography
PURPOSE: The purpose of this study was to scan femoral heads from cadaveric donors and investigate the microarchitecture within each femoral head comprehensively. MATERIAL AND METHODS: Ten proximal femora was harvested from eight human cadaveric donors and these specimens were scanned using …
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Biomechanical Analysis of Femoral Neck Strength with Respect to Femoral Head Core Decompression
… patients present with avascular necrosis of the femoral head each year in the United States. The current treatment for avascular necrosis is femoral head core decompression which is used to decrease the intraosseous pressure and promote vascular tissue ingrowth. There are two common techniques of …
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The experimental use of stainless steel femoral head prosthesis in dogs and cats
Thesis (M.S.)--Michigan State University of Agriculture and Applied Science. Dept. of Surgery and Medicine, 1960
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The Evaluation of Usefulness of the FEA and Relationship Between Trabecular Microstructural and Biomechanical Properties In Human Femoral Head
… primary compressive trabecular system of human femoral head. Twenty-one human femoral heads were obtained from 11 patients undergoing total hip arthroplasty and 10 cadavers at Ajou University Hospital. Cylindrical trabecular bone were cored from the primary compressive trabecular system of the …
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Human hip joint mechanics : an investigation into the effects of femoral head endoprosthetic replacements using in vivo and in vitro pressure data
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1993.
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Factors associated to avascular necrosis of the femoral head and non-union in patients younger than 65 years old with displaced femoral neck fractures treated with reduction and internal fixation.
… de las fracturas desplazadas de cuello femoral en pacientes menores de 65 años de edad, y no han sido claramente definidos los factores de riesgo para necrosis avascular o no-unión dentro de este rango de edad. Para determinar los factores asociados a la necrosis avascular de la cabeza …
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Behaviour of normal, avascular and revascularizing cancellous bone: in vivo studies of the mechanical properties and tissue reactions of cancellous bone in the femoral head of an African pygmy goat
Contains fulltext : mmubn000001_065300939.pdf (Publisher’s version ) (Open Access)
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Mechanism of Hip Dysplasia and Identification of the Least Energy Path for its Treatment by using the Principle of Stationary Potential Energy
… (DDH) is a common newborn condition where the femoral head is not located in its natural position in the acetabulum (hip socket). Several treatment methods are being implemented worldwide to treat this abnormal condition. One of the most effective methods of treatment is the use of Pavlik …
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Investigation of bone response to implant materials by electron microscopy and computer simulation
… introduced to simulate the replacement for the femoral head. It has been proved that the difference in Young's modulus between bone and implant materials is the main reason for the long-term bone loss (stress screening). This problem can be alleviated by proper implant design and resurfacing …
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Guided Abduction in the Treatment of Congenital Hip Dislocations
… way to control the reduction of the involved femoral head within the acetabulum, and failing this, it sets the stage for the use of other alternate methods such as closed and open reduction.</p> <p>The finding of localized and generalized changes in the femoral head subsequent to guided …
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Wear and Corrosion Resistance Improvement of CoCrMo alloy by Tantalum Based Coatings
… is one of the most common materials used for femoral head fabrication. Unfortunately, the implant fails usually after 15 years of service due to the excessive wear of the polyethylene liner and corrosion of the metallic ball which causes osteolysis, inflammation, and loosening of the implant …
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True Anterior Hip Approach by Anatomical dissection
"Purpose: To evaluate safe triangle within femoral triangle for the potential space of true anterior hip approach Material and Methods: Cadaveric dissections were done on 51 femoral triangles of 26 cadevers. We measured length of the direct head of rectus femoris from anterior superior iliac spine …
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Osteonecrosis: Cape wine as an aetiological agent
Ischaemic necrosis of bone, particularly of the femoral head appears to be an increasing cause of musculoskeletal disability in relatively young people (Hungerford 1981). The disease is usually progressive, resulting in the destruction of major weight-bearing joints requiring arthrodesis or …
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Displaced intracapsular neck of femur fractures: dislocation rate after total hip arthroplasty
… for THA done for neck of femur fractures. Larger femoral head sizes increase the head-neck ratio and range of motion before impingement, therefore reducing the dislocation rate. Due to the reported increase in dislocation for trauma, some surgeons prefer to do a hemi-arthroplasty or open reduction …
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Evalution of a Model for Experimentally-Induced Osteoarthritis in the Hip Joint of the Dog
… the acetabulum to reduce dorsal coverage of the femoral head. Sham group dogs received identical osteotomies but were plated in normal orientation. All dogs had force plate and subjective lameness evaluations pre-operatively and post-operatively. Pelvic radiographs were evaluated pre-operatively …
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Automated determination of the theoretical range of hip motion prior to total hip arthroplasty using 3D models created from pelvic CT scans
… (THA) is the risk of dislocation: the artificial femoral head pops out of the replaced acetabulum due to a leverage effect. It affects about 4,000 patients a year in the UK, for 80,000 THA1. To prevent this complication, surgeons would benefit from estimating the range of angular hip motion that …
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Finite Element Model of the Pediatric Hip Joint During the Barlow Maneuver
… is the dysplasia or dislocation of an unstable femoral head in the acetabulum of the pelvis. This is a result of an abnormal or underdeveloped growth of the acetabulum and triradiate cartilages and/or an out of place and uncentered femoral head in the acetabulum. This underdevelopment, if not …
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Effects of Reamer-Femoral Component Offset on Cement Mantle Penetration in Hip Resurfacing Arthroplasty
… project is to determine what amount of reamer-femoral component offset allows for the best cement penetration into the femoral head. Rapid prototyped femoral component models were produced with reamer femoral component offsets of 0.0 mm, 0.5 mm, and 1.0 mm. After implantation onto models of …
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An Investigation on the Corrosion Susceptibilities of Multi-Alloy Total Hip Replacements.
… applications of the titanium alloy for the femoral stem and a cobalt alloy for the femoral head have been established.
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