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Related Concept Videos

Hormones and Bone Tissue01:17

Hormones and Bone Tissue

The endocrine system produces and secretes hormones, which interact with the skeletal system. These hormones control bone growth, maintain bone once it is formed, and remodel it.
Hormones That Influence Osteoblasts and/or Maintain the Matrix
Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...
Bone Formation by Intramembranous Ossification01:29

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Intramembranous ossification is one of the two processes involved in the development of bones within an embryo. The flat bones of the face, most of the cranial bones, and the clavicles are formed via this process. During intramembranous ossification, the bones develop directly from sheets of undifferentiated mesenchymal connective tissue.
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Bone Disorders01:29

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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.
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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.
Bone Formation by Endochondral Ossification01:24

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Bone formation, or ossification, begins around the sixth to seventh week of embryonic development. Most bones develop from a cartilaginous template through the process of endochondral ossification. Cartilage formation begins when clusters of mesenchymal cells differentiate into chondrocytes. These chondrocytes proliferate rapidly and secrete an extracellular matrix that becomes encased in a membrane called the perichondrium. The resulting cartilage model provides a template that resembles the...
Changes in the Appendicular Skeleton with Age01:09

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Culturing and Measuring Fetal and Newborn Murine Long Bones
06:58

Culturing and Measuring Fetal and Newborn Murine Long Bones

Published on: April 26, 2019

Mechanical influences on bone development in children.

E Schoenau1, O Fricke

  • 1Children's Hospital, University of Cologne, Kerpener Strasse 62, D-50924 Cologne, Germany. eckhard.schoenau@uk-koeln.de

European Journal of Endocrinology
|September 13, 2008
PubMed
Summary
This summary is machine-generated.

Bone strength, not mass, is critical and directly linked to muscle function, not age. This challenges the concept of "peak bone mass" and shifts focus to muscle-bone interactions for fracture prediction.

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Area of Science:

  • Orthopedics
  • Bone Biology
  • Musculoskeletal Research

Background:

  • Traditionally, bone health focused on bone mass, often linked to aging.
  • Mechanical loading, particularly from muscle contractions, is the primary driver of bone strength.
  • The concept of a 'functional muscle-bone unit' highlights their interdependence.

Purpose of the Study:

  • To review methodological concepts in evaluating skeletal muscle function and bone adaptation.
  • To propose a paradigm shift from age-related bone mass to muscle-driven bone strength.
  • To explore novel approaches for fracture prediction based on muscle-bone relationships.

Main Methods:

  • Literature review of current research on bone mechanics, muscle function, and adaptation.
  • Analysis of the relationship between mechanical loads, muscle strength, and bone properties.
  • Discussion of emerging concepts in bone research, moving beyond bone mineral density.

Main Results:

  • Bone strength, rather than mass, is the critical determinant of skeletal integrity.
  • Bone strength is primarily regulated by mechanical loads, with muscle activity being the most significant.
  • Evidence suggests bone mass and strength should be correlated with muscle function, not chronological age.

Conclusions:

  • The concept of 'peak bone mass' is challenged; bone health is dynamic and muscle-dependent.
  • Future fracture prediction models should incorporate muscle function and bone geometry/strength.
  • Research is increasingly focusing on the functional muscle-bone unit for a comprehensive understanding of skeletal health.