Cartilage Degeneration of the Metacarpal Condyle and Enthesopaties of The Collateral Ligaments of Equine Metacarpophalangeal Joint.

Authors: De Bastiani Grasiela, La Côrte Flávio D De, Azevedo Marcos Da Silva, Jacobsen Tainã Kuwer, Kommers Gláucia D

Journal: Journal of equine veterinary science

DOI: 10.1016/j.jevs.2021.103754 PubMed: 34670704Log in to save

Summary

# Editorial Summary Degenerative changes in the metacarpophalangeal (MCP) joint—including cartilage fibrillation and eburnation—frequently occur alongside enthesopathies affecting the collateral ligaments, yet the precise relationship between these pathologies remains poorly characterised. De Bastiani and colleagues examined 30 equine forelimbs (mean age 5.7 years) using radiography, ultrasonography, and gross and histopathological examination to establish whether cartilage degeneration and collateral ligament enthesopathies are mechanistically linked and to assess the diagnostic sensitivity of imaging modalities. A highly significant positive correlation (P <0.001) emerged between ultrasonographic findings and macroscopic pathology, revealing clear associations between MCP cartilage degeneration and enthesopathies of both medial and lateral collateral ligaments. For practitioners managing MCP joint disease, these findings underscore the importance of thorough ultrasonographic examination of the collateral ligaments when cartilage damage is evident, as concurrent enthesopathy appears to be a consistent feature of degenerative MCP pathology rather than an incidental finding—potentially influencing both prognosis and rehabilitation strategies in cases of MCP osteoarthritis.

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Practical Takeaways

•When you identify cartilage degeneration in the metacarpophalangeal joint on imaging, expect concurrent collateral ligament enthesopathies on the same joint; investigate both structures
•Ultrasound is a reliable tool for detecting the relationship between MP joint cartilage damage and collateral ligament changes, making it valuable for lameness diagnosis
•These degenerative changes appear to be interconnected pathologically, suggesting that joint-level degeneration drives secondary ligamentous pathology rather than being isolated lesions

Key Findings

•Highly positive correlation (P<0.001) observed between ultrasonographic and macroscopic findings of MP joint pathology
•Strong relationship demonstrated between cartilaginous degenerations of the MP joint and medial and lateral collateral ligament enthesopathies
•Ultrasonography showed high sensitivity for detecting both articular degeneration and ligamentous enthesopathies in the MP joint

Conditions Studied

metacarpophalangeal joint cartilage degenerationfibrillation and eburnation of articular cartilageosteophytesenthesopathies of collateral ligamentscollateral ligament changes

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