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Updated: Nov 11, 2025
08:06
Addressing Practical Issues in Atomic Force Microscopy-Based Micro-Indentation on Human Articular Cartilage Explants
Published on: October 28, 2022
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Ectopic models recapitulating morphological and functional features of articular cartilage
Xiaoyu Cai1, Oliver Daniels1, Magali Cucchiarini1
1Center of Experimental Orthopaedics, Saarland University, Homburg, Germany.
Summary
Ectopic models using chondrogenic cells and biomaterial scaffolds create cartilage substitutes. These models aid fundamental and translational research, bridging in vitro findings with in vivo studies.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Orthopedics
Background:
- Articular cartilage is a specialized connective tissue covering diarthrodial joints.
- Ectopic implantation of chondrogenic cells with or without scaffolds generates cartilage substitutes.
- These substitutes are valuable for fundamental and translational research.
Purpose of the Study:
- To review relevant ectopic models for articular cartilage research.
- To discuss the role of cells and scaffolds in recapitulating cartilage features.
- To evaluate the utility of ectopic models in bridging in vitro and in vivo studies.
Main Methods:
- A literature search was conducted using the Pubmed database.
- The review focused on subcutaneous, intramuscular, and kidney capsule transplantation models.
- Analysis included implanted cells, biomaterial scaffolds, and their outcomes.
Main Results:
- Several ectopic models were identified, including subcutaneous, intramuscular, and kidney capsule transplantation.
- These models utilize chondrogenic cells and biomaterial scaffolds to generate cartilage.
- The generated cartilage exhibits structural and functional characteristics relevant to articular cartilage.
Conclusions:
- Ectopic models are instrumental in articular cartilage research.
- They serve as a bridge between in vitro data and in vivo translational studies.
- Limitations include the absence of a physiological joint environment and biomechanical stimuli.
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