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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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Essential Minerals for Bone Health01:31

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The minerals contained in all of the food we consume are essential for our organ systems. However, certain essential minerals, such as calcium, phosphorus, magnesium, manganese, and fluoride, largely affect bone health.
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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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The Bone Matrix01:18

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Bone contains a relatively small number of cells entrenched in a matrix of collagen fibers that provide an adherent surface for inorganic salt crystals. Both components of the matrix, organic and inorganic, contribute to the unusual properties of bone. Without collagen, bones would be brittle and shatter easily. Without mineral crystals, bones would flex and provide little support. This can be observed by an experiment: when the minerals of a bone are dissolved by soaking the bone in...
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Related Experiment Video

Updated: Apr 7, 2026

Scanning Skeletal Remains for Bone Mineral Density in Forensic Contexts
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Bone Mineral Measurements.

Abtin Doroudinia1, Patrick M Colletti

  • 1*A.D. is a Fellow at the Department of Radiology, Division of Nuclear Medicine, University of Southern California, Los Angeles, CA; †P.M.C. is a Professor of Radiology, University of Southern California, Los Angeles, CA.

Clinical Nuclear Medicine
|July 7, 2015
PubMed
Summary
This summary is machine-generated.

Accurate bone mineral density measurement aids in detecting osteoporosis and related fractures. Dual-energy X-ray absorptiometry (DXA) is a key tool for assessing bone loss and guiding treatment decisions.

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Area of Science:

  • Endocrinology
  • Orthopedics
  • Radiology

Background:

  • Decreased bone mass, including primary osteoporosis and secondary causes like hyperparathyroidism and glucocorticoid excess, is a significant health concern.
  • Primary osteoporosis affects a large patient population, increasing fracture susceptibility and posing a major public health challenge.
  • Fracture risk, particularly at the vertebral and femoral neck sites, correlates strongly with declining bone mineral density.

Purpose of the Study:

  • To discuss various bone densitometry methods.
  • To focus on dual-energy X-ray absorptiometry (DXA) for bone mineral density assessment.
  • To outline factors crucial for accurate DXA scan interpretation.

Main Methods:

  • Review of noninvasive bone densitometry techniques.
  • Detailed examination of dual-energy X-ray absorptiometry (DXA) methodology.
  • Analysis of critical parameters for interpreting DXA scan results.

Main Results:

  • Accurate bone mineral density measurement is vital for diagnosing bone loss conditions.
  • DXA scans provide essential data for estimating individual patient fracture risk.
  • Bone mineral density values inform therapeutic decisions, including hormone replacement and treatment monitoring.

Conclusions:

  • Noninvasive bone densitometry, particularly DXA, is indispensable for managing osteoporosis and related conditions.
  • DXA facilitates informed clinical decisions regarding osteoporosis treatment and follow-up.
  • Understanding DXA interpretation factors is key to optimizing patient care for bone health.