Arthritis is every horse owner's nightmare. The diagnosis often means the end of the athletic career or at least massive restrictions. But arthritis isn't just "wear and tear" that happens randomly. It's an inflammatory process that we can massively influence through management, training, and targeted nutrients.
Joints are finely balanced systems of bones, ligaments, tendons, and synovial fluid. Sometimes shock absorbers like menisci are added. The whole thing is enclosed by a stable joint capsule. Only when all components of the joint work together properly does movement work smoothly – in the truest sense of the word. The articular cartilage, which covers the bone ends, is particularly sensitive. Even minor injuries can damage it permanently.
Arthritis in horses is a degenerative, i.e. degenerative, chronic joint disease. It leads to damage in the joints through inflammatory episodes and causes severe pain. Whether a horse develops arthritis and how it progresses is influenced by many factors.
1. Biomechanics: Hoof Balance Is Everything
Let's talk about... physics? Yes! Because biomechanics is extremely important for healthy horse joints. And it starts with the hooves: Hooves that have grown too long or worn unevenly, as well as other changes (contracted heels, club foot), lead to incorrect loading of the joints. This results in uneven pressure distribution, which can already cause minor injuries (microtrauma) in the articular cartilage.
Do you want to prevent arthritis in your horse? Regular, expert hoof care is absolutely essential!
2. Inflammation Management: Putting Out the Fire
Arthritis often begins quietly with inflammation of the synovial membrane (synovialitis). This inflammation releases enzymes that attack the cartilage. And: Inflammation is a self-reinforcing process. When immune cells report a possible threat, they attract more immune system cells to the scene. They release substances that lead to cell death and cause the joint and its surroundings to swell. This leads to severe pain, adhesions of tissue in the joint, and reduced cartilage metabolism.
This process can be influenced, not only with classic anti-inflammatory drugs and painkillers.
The Role of Nutrition
A healthy ratio of polyunsaturated fatty acids omega-3 and omega-6 is of great importance: Many horses today receive feed with a high proportion of omega-6 fatty acids (grain-heavy concentrate feed). Omega-6 fatty acids promote inflammation. Natural feed (grass, herbs), on the other hand, contains more omega-3 fatty acids.
- Omega-3 Balance: Supplementation with additional high-quality omega-3 fatty acids (e.g., from algae oil) can demonstrably help to reduce the tendency to inflammation in the body. By the way: Oils such as linseed oil, which have been used for this purpose so far, quickly become rancid and can also be inadequately utilized by the horse.
- Senolytics (Fisetin): Latest research suggests that so-called "senescent cells" accumulate in aging joints. These cells no longer divide but send out inflammatory signals. Substances like fisetin could help eliminate these cells.
3. Movement: Use It or Lose It
Cartilage has no blood vessels. It is only nourished by diffusion, i.e., by alternating loading and unloading of the joint. Movement pumps the synovial fluid to the cartilage like water into a sponge. This creates a substance exchange from the synovial fluid into the cartilage and vice versa. Waste products can be removed.
That's why 23 hours in the stall is poison for the joints. Plenty of free movement at a walk (open stable, paddock trail) is ideal. Cold starts in training, however, are taboo. At least 15 minutes of walking before work is mandatory to prepare the joints.
Conclusion: Act Instead of React
Don't wait until your horse shows the first lameness or stiffness or the first X-ray findings are there. Arthritis prevention begins with the young horse. Through correct hoof care, anti-inflammatory nutrition, and species-appropriate movement, you can significantly extend the "healthspan" – the healthy, rideable time – of your horse.