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Related Concept Videos

Growth of Cartilage and Bone Tissue01:27

Growth of Cartilage and Bone Tissue

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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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Spongy Bone01:09

Spongy Bone

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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...
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Compact Bone01:27

Compact Bone

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Most bones contain compact and spongy osseous tissue, but their distribution and concentration vary based on the bone's overall function.
Compact bone, also called cortical bone, is the denser, stronger of the two types of bone tissue. It is found under the periosteum and in the diaphyses of long bones, where it provides support and protection. The microscopic structural unit of compact bone is called an osteon, or haversian system. Each osteon is composed of concentric rings of calcified...
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Bone Disorders01:29

Bone Disorders

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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.
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
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The Hyoid Bone01:12

The Hyoid Bone

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The hyoid bone is a small U-shaped bone located in the upper neck at the level of the inferior mandible, with its tips pointing posteriorly. It does not directly articulate with any other bone in the body. The hyoid acts as the attachment site for the tongue, the larynx, and the pharynx. It is held in position by a series of small muscles attached from above or below. These muscles help to move the hyoid up/down or forward/back in coordination with movements of the tongue, larynx, and pharynx...
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Bone Structure01:55

Bone Structure

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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.
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Related Experiment Video

Updated: Jan 24, 2026

Laser Capture Microdissection of Mouse Embryonic Cartilage and Bone for Gene Expression Analysis
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Transcriptomics in the Study of Bone and Cartilage.

Noah Fine1,2, Jason S Rockel3, Mohit Kapoor3,4

  • 1Division of Orthopaedics, Osteoarthritis Research Program, Schroeder Arthritis Institute, University Health Network, Toronto, ON, Canada. Noah.Fine@uhn.ca.

Current Osteoporosis Reports
|January 23, 2026
PubMed
Summary
This summary is machine-generated.

Recent transcriptomics, including RNA-seq, advances have identified key cellular and molecular patterns in osteoarthritis and osteoporosis research. These findings enhance understanding of disease mechanisms and potential therapeutic targets.

Keywords:
BoneCartilageMultiomicsTranscriptomics

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Area of Science:

  • Molecular Biology
  • Genomics
  • Biomedical Research

Background:

  • Osteoarthritis (OA) and osteoporosis (OP) are significant skeletal diseases with complex etiologies.
  • Understanding the molecular and cellular basis of OA and OP is crucial for developing effective treatments.

Purpose of the Study:

  • To review recent advancements in transcriptomics, specifically RNA-sequencing (RNA-seq) studies (bulk, single-cell, and spatial), applied to bone and cartilage research in OA and OP.
  • To highlight the impact of these transcriptomic studies over the past two years.

Main Methods:

  • Review of recent literature focusing on transcriptomics applications in OA and OP.
  • Analysis of bulk RNA-sequencing, single-cell RNA-sequencing (scRNA-seq), and spatial sequencing studies.
  • Examination of data utilization from public repositories.

Main Results:

  • Transcriptomics has been pivotal in identifying disease-specific cellular and molecular patterns in OA and OP.
  • These studies deepen the understanding of disease endotypes, underlying mechanisms, and potential therapeutic targets.
  • Emerging spatial sequencing protocols are overcoming tissue-specific challenges, opening new avenues for discovery in bone and cartilage.
  • Increased reliance on public data repositories for research is a growing trend.

Conclusions:

  • Advanced transcriptomics technologies are transforming OA and OP research by providing high-resolution molecular insights.
  • The integration of diverse transcriptomic approaches, including spatial sequencing, is accelerating the discovery of novel therapeutic strategies.
  • Leveraging public transcriptomic databases is essential for hypothesis generation and validation in skeletal disease research.