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Updated: May 25, 2026

Development of a Rabbit Chronic-Like Rotator Cuff Injury Model for Study of Fibrosis and Muscular Fatty Degeneration
Published on: March 31, 2023
Muscle degeneration in rotator cuff tears
Dominique Laron1, Sanjum P Samagh, Xuhui Liu
1Department of Orthopaedic Surgery, University of California, San Francisco, San Francisco, CA 94158, USA.
Large rotator cuff tears cause muscle degeneration, leading to poor surgical outcomes. Understanding the molecular basis of muscle atrophy and fatty infiltration is key to improving treatments for these extensive injuries.
Area of Science:
- Orthopedics
- Muscle Physiology
- Molecular Biology
Background:
- Rotator cuff tears are common orthopedic injuries.
- Large and massive tears lead to muscle atrophy and fatty infiltration.
- These changes predict surgical failure and poor functional outcomes.
Purpose of the Study:
- To review molecular pathways of muscle degeneration in rotator cuff tears.
- To highlight the clinical relevance of muscle atrophy and fatty infiltration.
- To guide future research and treatment for massive rotator cuff tears.
Main Methods:
- Literature review of molecular pathways.
- Analysis of studies on muscle degeneration.
- Synthesis of findings on clinical relevance.
Main Results:
- Muscle atrophy and fatty infiltration are significant pathological changes.
- These changes are linked to molecular signaling pathways.
- Understanding these pathways is crucial for improving surgical repair outcomes.
Conclusions:
- Molecular insights into muscle degeneration are vital for treating rotator cuff tears.
- Targeting these pathways may enhance outcomes for massive tears.
- Further research is needed to translate molecular findings into clinical practice.
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