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Related Concept Videos

Bone Formation by Endochondral Ossification01:24

Bone Formation by Endochondral Ossification

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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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Chondrocytes form a temporary cartilaginous model by dividing and secreting a thick gel-like extracellular matrix. Once the chondrocytes undergo programmed cell death, osteoblasts enter the site of the cartilaginous model. The process of replacing the temporary cartilaginous model with bone in an ordered manner is called endochondral ossification. In endochondral ossification, not all of the cartilage is replaced by bone tissue. Some cartilage that performs a protective and supportive function...
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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 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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Joints form during embryonic development in conjunction with the formation and growth of the associated bones. The embryonic tissue that gives rise to all bones, cartilage, and connective tissues of the body is called mesenchyme.
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Changes in the Appendicular Skeleton with Age01:09

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The upper and lower limb initially develops as a small bulge called a limb bud, which appears on the lateral side of the early embryo. The upper limb bud appears near the end of the fourth week of development, with the lower limb bud appearing shortly after.
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Culture of Murine Embryonic Metatarsals: A Physiological Model of Endochondral Ossification
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Modeling endochondral ossification: Effects of mechanical loading and bone shape.

Cristian Rodrigo Bustamante-Porras1, Kalenia Marquez-Florez2, Carlos Alberto Duque-Daza1

  • 1GNUM Research Group, Department of Mechanical and Mechatronics Engineering, Universidad Nacional de Colombia, Carrera 30 45-03, Bogotá D.C., 111321, Colombia.

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|June 19, 2025
PubMed
Summary
This summary is machine-generated.

This study developed a flexible computational model to simulate bone growth, predicting how mechanical stress and geometry influence secondary ossification centers (SOCs) in developing joints.

Keywords:
Endochondral ossificationFinite element methodNURBSOssification center

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Area of Science:

  • Biomechanical Engineering
  • Computational Biology
  • Developmental Biology

Background:

  • Mechanical and biochemical factors critically influence bone development, with existing models lacking flexibility for diverse geometric and loading conditions.
  • Understanding these factors is crucial for medical science applications, particularly in bone growth disorders.
  • This study addresses the limitations of current models by proposing a more adaptable computational approach.

Purpose of the Study:

  • To develop a flexible computational model for simulating epiphyseal growth.
  • To investigate the influence of parametric geometry and loading conditions on secondary ossification.
  • To predict the formation and distribution of secondary ossification centers (SOCs).

Main Methods:

  • Employed a computational approach with parametric geometry and loading conditions.
  • Utilized iterative finite element analyses to predict SOCs based on stress distribution.
  • Evaluated three distinct scenarios with varying geometric and loading parameters.

Main Results:

  • Model predicts variations in SOC presence, number, and spatial distribution based on geometric and loading conditions.
  • Cartilage concavity and width influence SOC location; dual loading on concave heads forms two ossification centers.
  • Increased volume correlates with reduced surface ossification and a lower ossification index (OI).

Conclusions:

  • The model successfully emulates the formation of diverse human joints, accounting for mechanical and geometrical influences.
  • While excluding non-biological geometries and focusing on mechanical factors, the model provides a foundation for studying bone growth disorders.
  • Future work should incorporate additional mechanobiology aspects to enhance model comprehensiveness.