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Related Concept Videos

Hormones and Bone Tissue01:17

Hormones and Bone Tissue

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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...
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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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Osteoclasts in Bone Remodeling01:31

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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...
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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...
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Bone Formation by Intramembranous Ossification01:29

Bone Formation by Intramembranous Ossification

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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.
The process begins when mesenchymal cells in the embryonic skeleton gather together and differentiate into osteogenic cells, which then develop into ...
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Related Experiment Video

Updated: Dec 24, 2025

Stimulation of Notch Signaling in Mouse Osteoclast Precursors
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Osteogenesis: how can it be stimulated?

F Spadari1,2, A Agazzi2, P Avvantaggiato3

  • 1Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy.

Journal of Biological Regulators and Homeostatic Agents
|April 10, 2020
PubMed
Summary
This summary is machine-generated.

Biophysical therapy enhances fracture healing by stimulating osteogenesis at the cellular level. This method, using various devices, complements orthopedic treatment for better bone repair outcomes.

Keywords:
electromagneticfieldsosteogenesistherapyultrasound

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Area of Science:

  • Orthopedics and Regenerative Medicine
  • Biophysics and Cell Biology

Background:

  • Biophysical therapy utilizes inductive, capacitive, mechanical, or implanted devices to deliver physical stimuli.
  • The core mechanism involves physical stimuli acting at the cell membrane, activating calcium channels.
  • This activation promotes cell proliferation and enhances the production of crucial growth factors.

Discussion:

  • Biophysical stimulation of osteogenesis is proven effective for improving fracture healing biology.
  • Optimal outcomes require concurrent correct orthopedic treatment, including proper alignment and stabilization.
  • The selection of a specific biophysical modality depends on the bone segment, fracture type, and device applicability (e.g., skin contact).

Key Insights:

  • Biophysical therapy directly influences cellular processes, enhancing bone regeneration.
  • It serves as an effective adjunct to established orthopedic fracture management.
  • Device selection is tailored to the specific clinical scenario for maximal therapeutic benefit.

Outlook:

  • Further research into optimizing device parameters and patient selection for biophysical therapy.
  • Exploring the integration of biophysical stimulation with novel biomaterials for enhanced osteogenesis.
  • Investigating the long-term efficacy and cost-effectiveness of biophysical therapies in diverse fracture types.