The use of intra-articular corticosteroids in the horse: what is known on a scientific basis?
Authors: McIlwraith C W
Journal: Equine veterinary journal
Summary
# Editorial Summary: Intra-articular Corticosteroids in Horses McIlwraith's comprehensive review examines the scientific evidence underpinning intra-articular corticosteroid use in equine practice, a technique that has resurged in prominence within racing industries despite longstanding concerns. The author synthesises existing clinical and experimental data to evaluate both the therapeutic benefits and potential risks of these injections, specifically addressing their effects on articular cartilage degradation, osteoarthritis progression, and catastrophic joint injury. Whilst intra-articular corticosteroids demonstrate clear short-term anti-inflammatory effects that can improve lameness and performance, the review highlights a critical tension: evidence suggests these agents may accelerate cartilage degeneration and OA development in some circumstances, particularly when joints are injected repeatedly or when animals return to high-stress activity too soon after administration. The timing of injections relative to training and competition emerges as a crucial variable affecting safety profiles, with inadequate recovery periods amplifying degenerative risks. For equine professionals, this synthesis underscores the necessity of judicious case selection, careful consideration of injection frequency, and realistic expectations regarding rest protocols—particularly in racing contexts where pressure to return to performance may compromise joint health and predispose horses to both progressive lameness and potentially catastrophic failure.
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Practical Takeaways
- •Intra-articular corticosteroid injections remain a common therapeutic tool in equine practice, but clinical decisions should be grounded in current scientific evidence regarding cartilage safety and catastrophic injury risk
- •The timing of corticosteroid administration relative to athletic activity (racing) requires careful consideration based on both therapeutic benefit and potential for adverse effects
- •Veterinarians should be familiar with the scientific basis for intra-articular corticosteroid use to provide evidence-based recommendations to trainers and owners regarding joint treatment protocols
Key Findings
- •Intra-articular corticosteroid administration has become a renewed focus in Thoroughbred racing despite historical concerns
- •Review addresses the relationship between intra-articular corticosteroid use and articular cartilage degradation in horses
- •Timing of corticosteroid injection relative to racing performance is a key clinical consideration