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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 53 for “"bone strength"”.
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Evaluation of bone strength: microtomographic tecniques
… mechanical and histomorphometrical properties of bone. The main objects of this study were the bone tissue properties and its resistance to mechanical loads. Moreover, the knowledge about the equipment selected to carry out the analyses, the micro-computed tomography (micro-CT), was improved. …
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Foot Deformity and Bone Strength in Charcot Neuropathic Osteoarthropathy
… is characterized by progressive degradation of bones and joints in a denervated, inflamed foot and ankle. Diabetes mellitus: DM) and peripheral neuropathy: PN) are the most common precursors of CN, which can lead to pedal fracture, subluxation, and dislocation. Bone injury and subtle articular …
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The Relationship Between the Osteonal Cement Line and Bone Strength
<p>Bone includes many structural and chemical components which provide both flexibility and strength. One such structure is the cement line, a 1-5 μm-thin structure located primarily in compact bone. Past research has correlated the pathological condition of “shin splints” with the micro-damage of …
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Translational studies into the effects of exercise on estimated bone strength
… associated with exercise is known to benefit bone health; however, most studies explore exercise benefits on bone mass independent of bone structure and strength. The purpose of this dissertation is to explore the response of the skeleton to exercise across the translational divide between …
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IDENTIFICATION OF MECHANISMS OF DELAYED PUBERTY ON BONE STRENGTH DEFICITS DURING DEVELOPMENT
… (Golden, 2000) can result from a lack of optimal bone accrual during the development (NIH Consensus Development Panel on Osteoporosis Prevention, Diagnosis, and Therapy, 2001). Pubertal timing is a key factor that contributes to optimal bone accrual and strength (Bonjour et al., 1994; 21 Warren et …
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Non-invasive determinants of juvenile equine bone strength for assessing exercise interventions
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-03-01 without embargo terms
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Computational optimization methods for modeling the effect of muscle forces on bone strength adaptation
… of the mechanical influences that alter the strength of a bone can aid in the refinement of the wide array of currently available techniques to counteract the losses of bone strength that occur due to age or disuse both on Earth and in Space. To address this need, computational modeling …
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The role of neuromuscular performance on bone strength and properties in the forearm and lower leg of children
… The role of muscle forces in determining bone micro-architecture and strength in children is poorly understood as limited evidence relies on surrogate measures of muscle force such as muscle size. The objective of this thesis was to explore the role of muscle area, peak forces from …
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Effects of type-I collagen fractional composition and pyridinium crosslink content on cortical bone strength in the human femur
Type-I collagen's role in the formation of bone and its inherent strength have been well documented by studies in genetic diseases such as Osteogenesis Imperfecta. Type-I collagen's role in healthy bone, and the changes that occur to collagen during aging, which may eventually lead to osteoporosis, …
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Predicting off-axis bone strength of the distal radius using high-resolution peripheral quantitative computed tomography based finite element modeling
… types of fractures to occur in older adults. Bone strength (e.g., failure load) of the distal radius can be estimated using finite element (FE) models generated from high-resolution peripheral quantitative computed tomography (HR-pQCT) images; however, these models are limited because they …
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Bone speed of sound in overweight and normal-weight girls and adolescents
… with many health problems, one of which is bone quality. In adult females, adiposity is associated with increased bone mineral density, suggesting that there is a protective effect of fat on bone. However, the association between adiposity and bone strength during childhood is not clear. …
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The Impact Of Dietary Phytase Supplementation On Skeletal Biomechanics And Characteristics In Growing Swine And Mice
The misconception that bone is a static tissue underestimates its importance in human and animal health, as well as the many factors that influence its development and maintenance. Genetic, hormonal, mechanical and nutritional factors all influence bone strength and mass, particularly in early …
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Using quantitative ultrasound for epidemiological research : associations with risk factors for low bone mineral density in South African premenopausal women
… effective and noninvasive method of determining bone strength well suited to community-based research in countries with limited resources. Although only moderately correlated with dual X-ray absorptiometry (DEXA) measurement of bone mineral density (BMD) at the hip and spine, quantitative …
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The treatment of postmenopausal osteoporosis
Osteoporosis is a skeletal condition in which bone strength is compromised leading to a propensity to fragility fractures. Osteoporotic fractures have significant consequences for both the individual, due to the resulting morbidity and mortality, and for society in terms of resource implications. …
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Genetics of Osteoporosis - Studies on bone size, structure and strength in the rat
Osteoporosis is characterized by decreased bone mineral density (BMD) leading to reduced bone strength and increased fracture risk. Several heritable components affect a bone’s ability to resist fracture, including size, structure and strength; therefore identification of the genes underlying …
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Bone Tissue Quality Determination of Mice Through a Novel Reference Point Indentation Technique
"Bone strength deteriorates with age; which increases the susceptibility to fracture. Current clinical techniques for the estimation of bone strength are largely Bone Mineral Density (BMD) based. However, toughness, which is the ability to resist crack growth, plays a critical role in bones‟ …
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Effect of isokinetic resistance training on ulnar stiffness in young, college-aged women
Bone mineral content (BMC) and bone mineral density (BMD), measured by dual x-ray absorptiometry are used clinically to diagnose osteoporosis and estimate risk for fragility fractures. Bone mineral explains up to 70% of bone strength; however, it does not take into account bone geometry. Mechanical …
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Quantification of bone using a 3.0 tesla clinical magnetic resonance scanner
… & MRS) as a quantitative tool for diagnosing bone abnormalities at multiple skeletal sites, which could be used in conjunction with routine clinical imaging.MRI and MRS are routinely used in the clinical setting for the diagnosis of various types of diseases and abnormalities due to its …
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Sex-specific changes in bone structure and strength during growth: pQCT analysis of the mid-tibia
Introduction: The process by which children's bones grow has not been fully charcterised. The current dogma is that girls fill in their medullary canal area by forming bone at the endosteum. It has been argued that the sex difference in how bone strength is conferred -- favouring boys -- may …
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Impact of genetics and phosphorous nutrition on bone metabolism
<p>Phosphorous (P) is essential to bone growth and maintenance; however, little research has focused on the genetic mechanisms controlling P utilization. Thirty-six pigs from 2 sire lines known to differ in bone structure (heavier-boned, HB, and lighter-boned, LB) were assigned to three diets for 2 …
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