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 45 for “"Bone Quality"”.
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Osteoarthritis Induced Glenoid Morphology and Bone Quality: An Evaluation of Augmented Glenoid Components
Osteoarthritis of the glenoid results in regional bone density variations and bone loss that may compromise early component fixation and support. The two common morphologies, symmetric and asymmetric erosion, were characterized by bone density and morphology, and assessed on the basis of bone …
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Evaluation and Selection of a Bacillus based Direct-Fed Microbial Candidate for In situ Enzyme Production to Improve Gut Health Integrity, Bone Quality and Growth Performance in Poultry
… resulting in an increase of performance and bone quality parameters, along with maintenance of the beneficial microflora in the GIT. Moreover, due to the wide availability of DDGS from the ethanol industry, a different set of experiments including 8% of DDGS in the grower diet were developed. …
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Influence of Mechanical Stimulation on the Quantity and Quality of Bone During Modeling
Skeletal fractures due to bone disease impact an estimated 1.5 million Americans per year, creating a large economic burden on our society. Treatment of bone diseases prior to fracture often involves bisphosphonates (current gold-standard in osteoporosis care and prevention). Although …
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The Retrospective Study of the Implant Risk Factor and actor Clinical Result in Implant Prosthesis
… systems, implant position, diameter, length, bone quality, bone quantity, general condition of patients, risk factor were collected. The results were as follows. The cumulative survival rate was 94.6%. Out of 500 implant fixture, 15 implants were failed in Maxilla and 12 implants were failed …
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Bone Properties of Recombinant Inbred Line - BXD Mouse
<p>Osteoporosis is identified by reduced bone mass, decreased bone quality and altered bone micro-architecture. These traits are quantitative and also highly regulated by genetic and environmental factors. As a powerful tool for collaborative analysis of quantitative traits and gene function, BXD …
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Effects of Chemotherapy on Bone Mineral Density in a Post-Mortem Context
… has been shown to have a significant impact on bone mineral density and bone quality in cancer patients. This research aims to study the impact of chemotherapy on bone mineral density and bone quality as seen in the skeletal remains of cancer patients. The Texas State Donated Skeletal Collection …
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Finite Element Simulation of the MRTA Test of a Human Tibia
… response tissue analyzer (MRTA) tests long bone quality through low frequency, low amplitude vibration in vivo. The MRTA measures complex stiffness over a range of low frequencies, offering a wealth of information on bone composition. Previous MRTA interpretation used lumped parameter …
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Histomorphometric Analysis of Maxillary Sinus Grafts: A Randomized Controlled Study
… was to evaluate and compare the degree of new bone formation through histomorphometric analysis following maxillary sinus grafts (MSG) using three different bone graft materials. Thirty-one MSG were performed using a lateral window approach for patients who required implant placement in …
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Investigation of ultrastructural and mechanical properties of rat cortical bone using micro-CT, three-point bending testing, and the reference point indentation technique
Characterization of bone is important as it aids in the understanding of bone pathologies and their corresponding treatments. Assessment of cortical bone morphology has been identified as an important aspect of overall bone quality as it contributes significantly to the mechanical strength of bone. …
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Development of a Computational Approach to Assess Hip Fracture and Repair: Considerations of Intersubject and Surgical Alignment Variability
… models of hip fracture have evaluated bone strains to assess fracture risk, the current study advances the state of the art by utilizing a novel technique in the extended finite element method (XFEM) to assess hip fracture and develops a computational approach to evaluate fracture …
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(Inter)national Review of Periprosthetic Hip and Knee Fracture Diagnostic and Treatment Strategies
… index arthroplasty history, mechanism/timing, bone quality, infection work-up, imaging/classification, implant/stability descriptors, management pathways, and outcomes/complications. This registry-ready specification enables harmonized data capture across institutions and supports quality …
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Bone fracture toughness of estrogen deficient rabbits
Bone mass is commonly used as an indicator of fracture risk. It has been shown in numerous studies that bone loss causes increased bone fragility and risk of fracture. It has also been shown that 50% of patients with osteoporotic vertebral compression fractures have the same bone mass as normal age …
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Restoration of Bone Material and Microstructural Properties after Long-Term Remodeling Suppression
… osteoporosis treatment. They work by inhibiting bone resorption/remodeling, thus preventing bone loss. However, long-term suppression of bone resorption adversely affects bone tissue mechanical properties, even while conserving bone mass. Lack of remodeling leads to accumulation of …
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The role of boron alone or in combination with estrogen or PTH in the treatment of postmenopausal osteoporosis in ovariectomized rats
… with estrogen or parathyroid hormone (PTH) on bone quality and Ca, P, and Mg metabolism were investigated in 12- week-old rats. Treatment began on day 43 after ovariectomy and continued for 5 weeks. Treatments included 5 ppm (5 mg per kg diet) boron as boric acid, 17β estradiol (30 μg/kg/d, …
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The Interplay Between Bone Homeostasis, Permeability, and Fracture Toughness
<p>Healthy bones are strong and tough, able to resist plastic deformations and withstand crack propagation. These essential mechanical properties emerge from a complex hierarchical structure and the activity of osteocytes, bone cells residing in tiny cavities within the matrix. The lacunar …
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Predicting peak load of the femoral neck using structural parameters
… for diagnosing osteoporosis uses measurements of bone mineral density (BMD) by dual energy X-ray absorptiometry (DXA). This measurement only partially explains the strength of bones and fails to incorporate other factors that alter bone quality. The aim of this study was to investigate how micro …
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Statistical Modeling of Knee Morphology and Material Properties Considering Diverse Populations
… revealed literature-supported differences in bone size between the sexes and changes in bone material quality with age. While significant differences in bone morphology and bone quality among racial and ethnic groups were observed, further validation with a more balanced and robust training …
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Regulation of Breast Cancer Cells’ Bone-Metastatic Potential by Mechanically Stimulated Osteocytes
Bone metastasis, the migration of cancers to the bone, occurs in 65-75% of patients with advanced breast cancer and significantly increases patients’ morbidity and mortality. The bone-metastatic cancer cells interact with cells in the bone to disrupt the bone remodeling balance, causing reduced …
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IMPACT OF MILD AUTONOMOUS CORTISOL SECRETION ONVERTEBRAL FRACTURE RISK
… T-score difference -0.3 SD), indicating impaired bone quality. In the longitudinal arm (126 patients, ≥24 months follow-up), MACS independently predicted incident VFx (25% vs 8%; adjusted HR 3.0, 95% CI 1.6-5.6), even with normal baseline BMD. Study 2 combined retrospective (n=53 MACS patients: 31 …
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Characterization of swine femoral cortical bone using the reference point indentation technique
The investigation of mechanical properties of bone, specifically fracture properties, is an important aspect of studying bone quality, and can potentially be used to predict the risk of bone fracture. In this study, a novel microindentation technique, the reference point indentation (RPI) …
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