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相关概念视频

Spongy Bone01:09

Spongy Bone

5.4K
All bones comprise an outer layer of compact bone, and an interior made up of spongy bone tissue, also called cancellous or trabecular bone. In long bones, spongy bone tissue is mainly found in the interior of the epiphyses (broad ends of the bone).
Spongy bone is more porous, and less dense compared to compact bone. It is composed of concentric lamellae that are arranged irregularly to form the trabecular network. In some bones, the spaces between trabeculae contain red marrow, where...
5.4K
Bone Structure01:55

Bone Structure

49.1K
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.
49.1K
Classification of Bones01:18

Classification of Bones

7.3K
The bones of the human skeletal system are of varied shapes, sizes, and functions. They can be classified based on their shape and function into four major classes: long bones, short bones, flat bones, and irregular bones. Some classifications include a fifth type, the sesamoid bones, as a separate class, whereas others categorize them under short bones.
Long and Short Bones
The appendicular skeleton, particularly the upper and lower limbs, is primarily made of long and short bones. The...
7.3K
Bone Remodeling01:40

Bone Remodeling

38.5K
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.
38.5K
Bone Formation by Intramembranous Ossification01:29

Bone Formation by Intramembranous Ossification

7.6K
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 ...
7.6K
Gross Anatomy of Bone01:17

Gross Anatomy of Bone

6.5K
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...
6.5K

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相关实验视频

Updated: Sep 16, 2025

Outer-Boundary Assisted Segmentation and Quantification of Trabecular Bones by an Imagej Plugin
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Outer-Boundary Assisted Segmentation and Quantification of Trabecular Bones by an Imagej Plugin

Published on: March 14, 2018

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一个使用新的概率方法的三维骨干骨的生成结构模型.

Pengwei Xiao1, Matthew Kirby1, Yizhong Hu2

  • 1Mechanical Engineering, University of Texas at San Antonio, USA.

Journal of the mechanical behavior of biomedical materials
|July 11, 2025
PubMed
概括

一个新的3D生成模型准确地复制了人类椎骨的微观结构和机械特性. 这种数字骨模型的开发提供了有关骨健康和疾病的见解.

关键词:
弹性行为弹性行为.生成型模型是一种生成型模型.反向蒙特卡洛模拟的模拟微结构的随机性 微结构的随机性椎间板骨骨的骨头是什么意思沃罗诺伊的测层结构.

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Author Spotlight: An Economic and Efficient Method for Quantitative Evaluation of Bone Microarchitecture in a Murine Osteoporosis Model
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Author Spotlight: An Economic and Efficient Method for Quantitative Evaluation of Bone Microarchitecture in a Murine Osteoporosis Model

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Author Spotlight: PEGASOS Tissue Clearing Technique to Visualize Bone Remodeling
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Author Spotlight: PEGASOS Tissue Clearing Technique to Visualize Bone Remodeling

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相关实验视频

Last Updated: Sep 16, 2025

Outer-Boundary Assisted Segmentation and Quantification of Trabecular Bones by an Imagej Plugin
09:36

Outer-Boundary Assisted Segmentation and Quantification of Trabecular Bones by an Imagej Plugin

Published on: March 14, 2018

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Author Spotlight: An Economic and Efficient Method for Quantitative Evaluation of Bone Microarchitecture in a Murine Osteoporosis Model
06:59

Author Spotlight: An Economic and Efficient Method for Quantitative Evaluation of Bone Microarchitecture in a Murine Osteoporosis Model

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Author Spotlight: PEGASOS Tissue Clearing Technique to Visualize Bone Remodeling
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Author Spotlight: PEGASOS Tissue Clearing Technique to Visualize Bone Remodeling

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科学领域:

  • 生物医学工程 生物医学工程
  • 计算生物学 计算生物学
  • 材料科学 材料科学 材料科学

背景情况:

  • 脊椎骨的微观结构显著影响骨的机械特性.
  • 脊椎骨精确的数字模型对于研究和临床应用至关重要.
  • 现有的模型往往难以捕捉真正的骨架构的复杂性.

研究的目的:

  • 开发一种新的三维 (3D) 生成模型,用于合成现实的状骨微观结构.
  • 为了验证模型能够复制人类椎骨的微观结构和机械特征的能力.

主要方法:

  • 一个基于概率的框架,集成图像处理,沃罗诺伊模块化,反向蒙特卡洛模拟和计算机图形.
  • 分析了542个来自人体尸体近接大腿骨的脊椎骨块.
  • 合成和真实骨样本之间的微观结构和机械性能的比较.

主要成果:

  • 合成的数字模型在微观结构特征 (方向,大小,排列) 方面与真骨密切匹配,Hellinger距离很低 (0.0510.187).
  • 基底形态参数 (BV/TV,PN,RN等等) 进行测量. 被准确地捕捉到了.
  • 不同类型的机械行为 (刚性,产量压力) 得到了有效的复制 (R2 0.900.97).

结论:

  • 开发的3D生成模型成功地模仿了人椎骨的微观结构和机械特性.
  • 这种模型为骨生物力学和病理学的in silico研究提供了一个强大的工具.
  • 这些发现证实了该模型在生成高保真度数字骨表示中的有效性.