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Related Concept Videos

Bone Remodeling and Repair01:31

Bone Remodeling and Repair

Osteoclasts are cells responsible for bone resorption and remodeling. They originate from hematopoietic progenitor cells present in the bone marrow. Numerous progenitor cells fuse to form multinucleated cells, each with 10-20 nuclei. A single osteoclast has a diameter of 150 to 200 µM. These cells have ruffled borders that break down the underlying bone tissue and release minerals such as calcium into the blood in bone resorption. Osteoclasts cling to bones with their ruffled edges during bone...
Bone Remodeling01:40

Bone Remodeling

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.
Gross Anatomy of Bone01:17

Gross Anatomy of Bone

The two main features of a long bone are the diaphysis and the epiphysis.
The diaphysis is the tubular shaft that runs between the proximal and distal ends of the bone. The walls of the diaphysis are composed of dense and hard compact bone made of numerous osteons — the functional unit of the compact bone. The hollow region in the diaphysis is called the medullary cavity, which harbors the bone marrow. In infants and children, this marrow cavity is filled with red marrow, whereas in adults, it...
Bone as Supporting Connective Tissue01:23

Bone as Supporting Connective Tissue

Bone tissue forms the internal skeleton of vertebrate animals, providing structure to the body.
Bone Matrix
Bone, or osseous tissue, is a connective tissue that has a large amount of two different types of matrix material. The organic matrix is similar to the matrix material found in other connective tissues, including some amount of collagen and elastic fibers. This gives strength and flexibility to the tissue. The inorganic matrix consists of mineral salts— mostly calcium salts— that give the...
Bone Structure01:55

Bone Structure

Within the skeletal system, the structure of a bone, or osseous tissue, can be exemplified in a long bone, like the femur, where there are two types of osseous tissue: cortical and cancellous.
Bone Cells and Tissue01:30

Bone Cells and Tissue

Bones contain a relatively small number of cells entrenched in a matrix of organic and inorganic components. Although bone cells compose only a small amount of the bone volume, they are crucial to its function. Four types of cells are found within the bone tissue— osteoblasts, osteocytes, osteogenic cells, and osteoclasts.
Osteoblasts and Osteocytes
The osteoblast is the bone cell responsible for forming new bone tissue. It is found in the growing portions of bone, including the periosteum and...

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Related Experiment Video

Updated: May 22, 2026

Using Inducible Osteoblastic Lineage-Specific Stat3 Knockout Mice to Study Alveolar Bone Remodeling During Orthodontic Tooth Movement
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Toward mechanical systems biology in bone.

Andreas Trüssel1, Ralph Müller, Duncan Webster

  • 1Institute for Biomechanics, ETH Zürich, Wolfgang-Pauli-Strasse 10, 8093, Zurich, Switzerland.

Annals of Biomedical Engineering
|May 24, 2012
PubMed
Summary

Mechanical loading drives bone adaptation across scales. This review explores experimental and computational methods to understand how osteocytes sense forces and orchestrate bone remodeling for optimal strength.

Area of Science:

  • Biomechanics
  • Cellular Biology
  • Systems Biology

Background:

  • Cyclic mechanical loading is crucial for regulating bone mass and shape, balancing strength and weight.
  • Bone adaptation involves sensing forces at the cellular level by osteocytes, which then regulate bone formation and resorption.
  • Understanding these multi-scale processes requires quantifying cause and effect across different biological scales.

Purpose of the Study:

  • To review emerging and state-of-the-art experimental and computational techniques for studying bone adaptation.
  • To explore how a mechanical systems biology approach can enhance understanding of load-induced bone adaptation.
  • To outline methods for quantitatively coupling experimental and computational approaches for multiscale bone modeling.

Main Methods:

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  • Review of current experimental techniques for assessing bone adaptation at various scales.
  • Discussion of computational modeling approaches used to integrate experimental observations.
  • Exploration of integrating experimental data with computational models for validation.

Main Results:

  • Significant progress has been made in experimental and computational approaches to bone adaptation.
  • Existing models provide plausible mechanisms but require further quantitative experimental validation.
  • Emerging techniques offer potential for a more comprehensive, multi-scale understanding.

Conclusions:

  • Coupling quantitative experimental and computational approaches is essential for developing reliable multiscale models of bone adaptation.
  • A mechanical systems biology framework is promising for elucidating the mechanisms of load-induced bone adaptation.
  • Further validation is needed to fully integrate multi-scale insights into bone remodeling processes.