Related Experiment Video
Updated: Oct 4, 2025
Destabilization of the Medial Meniscus and Cartilage Scratch Murine Model of Accelerated Osteoarthritis
Published on: July 6, 2022
New imaging tools for mouse models of osteoarthritis
S Drevet1,2, B Favier3, B Lardy3,4
1Univ. Grenoble Alpes, CNRS, UMR 5525, VetAgro Sup, Grenoble INP, TIMC, 38000, Grenoble, France. sdrevet@chu-grenoble.fr.
Abstract:
Osteoarthritis (OA) is a chronic degenerative disease characterized by a disruption of articular joint cartilage homeostasis. Mice are the most commonly used models to study OA. Despite recent reviews, there is still a lack of knowledge about the new development in imaging techniques. Two types of modalities are complementary: those that assess structural changes in joint tissues and those that assess metabolism and disease activity. Micro MRI is the most important imaging tool for OA research. Automated methodologies for assessing periarticular bone morphology with micro-CT have been developed allowing quantitative assessment of tibial surface that may be representative of the whole OA joint changes. Phase-contrast X-ray imaging provides in a single examination a high image precision with good differentiation between all anatomical elements of the knee joint (soft tissue and bone). Positron emission tomography, photoacoustic imaging, and fluorescence reflectance imaging provide molecular and functional data. To conclude, innovative imaging technologies could be an alternative to conventional histology with greater resolution and more efficiency in both morphological analysis and metabolism follow-up. There is a logic of permanent adjustment between innovations, 3R rule, and scientific perspectives. New imaging associated with artificial intelligence may add to human clinical practice allowing not only diagnosis but also prediction of disease progression to personalized medicine.
Insights
New imaging techniques offer advanced insights into osteoarthritis (OA) progression in mouse models. These methods provide detailed structural and metabolic data, improving OA research and potentially personalizing future clinical treatments.
Area of Science:
- Orthopedics and Imaging Science
- Biomedical Engineering
- Osteoarthritis Research
Background:
- Osteoarthritis (OA) is a degenerative joint disease impacting cartilage homeostasis.
- Mice are the primary animal models for OA research.
- Current knowledge gaps exist regarding advanced imaging techniques for OA study.
Purpose of the Study:
- To review novel imaging modalities for osteoarthritis research.
- To highlight advancements in structural and metabolic assessment of OA.
- To explore the integration of new imaging with artificial intelligence for clinical application.
Main Methods:
- Micro MRI for structural assessment of joint tissues.
- Micro-CT for quantitative analysis of periarticular bone morphology.
- Phase-contrast X-ray imaging for high-resolution soft tissue and bone differentiation.
- Molecular imaging techniques including Positron Emission Tomography (PET), photoacoustic imaging, and fluorescence reflectance imaging.
Main Results:
- Micro-CT enables automated, quantitative assessment of tibial surface changes in OA.
- Phase-contrast X-ray imaging offers precise differentiation of knee joint components.
- Molecular imaging provides crucial functional and metabolic data.
- Innovative imaging surpasses conventional histology in resolution and efficiency.
Conclusions:
- Advanced imaging technologies offer superior morphological and metabolic evaluation for OA research.
- These innovations align with the 3R principles (Replacement, Reduction, Refinement) in animal research.
- Integration of AI with novel imaging promises enhanced OA diagnosis, prognosis, and personalized medicine.
