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Related Concept Videos

Bone Disorders01:29

Bone Disorders

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Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
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Bone Remodeling01:40

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Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
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Bone Densitometry: Current Status and Future Perspective.

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    This chapter explores bone strength and fracture risk assessment using current technologies. It reviews bone densitometry techniques, including magnetic resonance imaging and dual-energy X-ray absorptiometry, for pediatric bone health evaluation.

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    Area of Science:

    • Orthopedics
    • Radiology
    • Pediatrics

    Background:

    • Bone strength and fracture risk are critical determinants of skeletal health.
    • Accurate quantification of these factors is essential for clinical management, especially in children.

    Purpose of the Study:

    • To discuss the factors determining bone strength and fracture risk.
    • To review current technologies for quantifying bone health, focusing on pediatric applications.

    Main Methods:

    • Review of bone densitometry measurement techniques.
    • Evaluation of magnetic resonance imaging (MRI) for assessing the growing skeleton.
    • Analysis of dual-energy X-ray absorptiometry (DXA) and quantitative computed tomography (QCT) in pediatric bone health.

    Main Results:

    • Discussion of the strengths and limitations of various bone densitometry techniques.
    • Highlighting MRI as a newer technology for pediatric skeletal assessment.
    • Review of the clinical utility and diagnostic application of DXA and QCT in children.

    Conclusions:

    • Current technologies offer valuable methods for assessing bone strength and fracture risk.
    • Understanding the nuances of techniques like MRI, DXA, and QCT is crucial for pediatric bone health assessment.