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 126 for “"Bone loss"”.
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QUANTIFYING RADIATION INDUCED CORTICAL BONE LOSS USING COMPUTED TOMOGRAPHY (CT) IMAGING
Bone fracture is a major complication of radiation therapy (RT). The etiology of RT-induced fractures is unclear, but likely involves bone damage and deterioration. Unfortunately, there remains a paucity of quantitative data on structural bone changes after exposure to RT. The primary goal of this …
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Bone turnover markers and prediction of bone loss in elderly women
… who are at high risk. Biochemical markers of bone turnover (BTMs) have shown some degree of fracture predictability. There is also a correlation between rate of decrease of areal bone mineral density (aBMD) and incident fractures. In this study, the correlation between BTMs and rate of bone …
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The role of osteocytes in disuse and microgravity-induces bone loss
… over a century that loading is fundamental for bone health, and that reduced loading, as in prolonged bed rest or space flight, leads to bone loss. Osteocytes, the most abundant bone cell type, are thought to be key mechanical sensors in bone, yet the molecular mechanism of this action remains …
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Osteoimmunological Characterization of Borrelia burgdorferi-Induced Bone Loss: From Phenotype to Molecular Mechanisms
… and disseminates to various tissues, including bone. B. burgdorferi induces trabecular long bone loss in murine models, but its phenotype and molecular mechanisms remain unknown. Furthermore, it is not known if B. burgdorferi induces loss of alveolar bone (supporting teeth). We first conducted …
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Studies of the role of nf-κb in controlling osteoclast differentiation and bone loss
Increased osteoclast (OC) bone resorption and/or decreased osteoblast (OB) bone formation contribute to bone loss in osteoporosis and rheumatoid arthritis (RA). Findings of the basic and translational research presented in this thesis demonstrate a number of mechanisms by which cytokine-induced …
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Alendronate Alters Single Cell Gene Expression of Cortical Osteoblast Lineage Cells During Bone Loss
<p>The mineralized matrix of bone makes it difficult to examine specific populations of cells which are integral to the tissue using traditional molecular methods. For this study we examined single cell cortical osteoblasts derived from the femurs of C57BL/6J mice. After isolating single cells from …
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A finite element analysis of the effects of bone loss on cementless total hip arthroplasty
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
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Evaluation of Neuromuscular Electrical Stimulation as a Bone Loss Countermeasure on a Long Duration Mars Mission
During spaceflight, astronauts experience bone loss, in part, due to the absence of the skeletal loading normally experienced on Earth. The current ISS exercise regimen is not expected to sufficiently reduce the risk of fracture on a long duration mission to Mars (>6 months) and additional exercise …
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MICROGRAVITY-INDUCED ALTERATIONS IN THE BRAIN-TO-BONE AXIS: IMPLICATIONS FOR BONE LOSS AND COUNTERMEASURE DEVELOPMENT IN LONG-TERM SPACEFLIGHT.
… that it remains incomplete. Muscle atrophy and loss of strength may result from neurophysiological deterioration affecting both bone and muscle, including impaired synaptic transmission. Previous studies have already shown that microgravity has a detrimental effect on motor neuron function. …
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The Incidence of Dental Caries, Periapical Root Resorption, and Alveolar Bone Loss Among the Navajo Indians of Monument Valley, Utah
… tooth periapical root resorption, and alveolar bone loss was assessed. The relationship of tooth malpositioning to the specific parameter was subsequently determined.</p> <p>The sample was divided into arbitrary age groups.</p> <p>Periapical roentgenograms were taken of each subject and were …
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The association of early marginal bone loss relative to the implant restorative platform and pre-operative site-specific factors: retrospective cohort
AIM: To evaluate marginal bone loss (MBL) around dental implants measured at the 2nd stage surgery when placing the healing abutment and retrospectively to evaluate the association of several pre-surgical variables. MATERIAL AND METHODS: Eighty-seven patients with a total of 118 implants, were …
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Osteoplastic Reconstruction in Anterior Glenohumeral Instability with Acquired Glenoid Bone Loss /// Остеопластично възстановяване при предна раменна нестабилност със съпътстваща костна загуба на гленоида
Човешкото рамо е уникално сред големите стави със специфична позиция. Това е най-често луксираната става. Когато статичните и динамичните стабилизатори биват увредени и балансът между движение и стабилност се наруши, обикновено след приложена външна сила, резултатът е раменна луксация. …
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Factors Affecting Gingival Recession in the Esthetic Zone: A Human Cadaver Study
… in fresh cadavers: gingival thickness, buccal bone loss, buccal bone thickness, shape of bony dehiscence defect, and age. A secondary aim was to evaluate predictors for gingival recession.</p> <p>Sixteen fresh cadavers were used in this study. Gingival recession, facial gingival thickness, …
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Osteoporosis in rheumatoid arthritis
… in rheumatoid arthritis, but the mechanism of bone loss remains obscure. This is probably due to the overlap with bone loss of aging and the menopause, whose exact mechanisms are also poorly understood. Against this background, a study was designed to evaluate generalised bone loss in young, …
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Surgical Factors Related to Peri-Implant Diseases
… depths but a negative trend with marginal bone loss, suggesting potential bone preservation. Greater inter-implant distances were associated with reduced distal bone loss, supporting the 3 mm spacing guideline. In contrast, increased distance from adjacent teeth showed a weak association …
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Skeletal adaptation to reduced mechanical loading
Bone adapts its mass and architecture in response to its mechanical environment. Yet control of this process by mechanical cues is poorly understood, particularly for unloading. Defining the fundamental mechanoregulation of bone adaptation is critical for the better understanding and mitigation of …
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Skeletal adaptation to reduced mechanical loading
Bone adapts its mass and architecture in response to its mechanical environment. Yet control of this process by mechanical cues is poorly understood, particularly for unloading. Defining the fundamental mechano-regulation of bone adaptation is critical for the better understanding and mitigation of …
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Maize and Bone: An Evaluation and Expansion of a Proposed Model for the Differential Diagnosis of Pellagra in Human Remains
… Collection were evaluated for caries, alveolar bone loss, periostitis, osteoporosis, cribra orbitalia, and porotic hyperostosis. Results indicate that the pellagra sample had lower rates of caries and alveolar bone loss, and higher rates of periostitis of the tibia and fibula in relation to the …
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