منابع مشابه
Vitamin E improved bone strength and bone minerals in male rats given alcohol
Objective(s): Alcohol consumption induces oxidative stress on bone, which in turn increases the risk of osteoporosis. This study determined the effects of vitamin E on bone strength and bone mineral content in alcohol-induced osteoporotic rats. Materials and Methods: Three months old Sprague Dawley male rats were randomly divided into 5 groups: (I) control group; (II) alcohol (3 g/kg) + normal ...
متن کاملBone strength: current concepts.
Bones serve several mechanical functions, including acoustic amplification in the middle ear, shielding vital organs from trauma, and serving as levers for muscles to contract against. Bone is a multiphase material made up of a tough collagenous matrix intermingled with rigid mineral crystals. The mineral gives bone its stiffness. Without sufficient mineralization, bones will plastically deform...
متن کاملAnatomy and Ultrastructure of Bone – Histogenesis, Growth and Remodeling
1. Bones have three major functions: to serve as mechanical support, sites of muscle insertion and as a reserve of calcium and phosphate for the organism. 2. The organic matrix of bone is formed mostly of collagen, but also non-collagenous proteins. Hydroxyapatite crystals bind to both types of proteins. 3. Most components of the bone matrix are synthesized and secreted by osteoblasts. 4. Resor...
متن کاملThe Ultrastructure of Bone and Its Relevance to Mechanical Properties
Bone is a biologically generated composite material comprised of two major structural components: crystals of apatite and collagen fibrils. Computational analysis of the mechanical properties of bone must make assumptions about the geometric and topological relationships between these components. Recent transmission electron microscope (TEM) studies of samples of bone prepared using ion milling...
متن کاملEffects of Ageing on Bone Mineral Composition and Bone Strength
With age in degenerative effects on the skeletal system there is increase in the risk of fracture. Mechanical strength of human bone depends on chemical constituents present in it. The present investigation focuses on estimation of bone inorganic constituents: calcium, phosphor and determination of mechanical strength: tensile, compression. Further a correlation is developed to establish relati...
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ژورنال
عنوان ژورنال: Osteoporosis International
سال: 2009
ISSN: 0937-941X,1433-2965
DOI: 10.1007/s00198-009-0866-5