Helping a horse with arthritis comes down to a combination of movement, weight control, hoof care, pain management, and smart environmental choices. Osteoarthritis is a progressive condition, meaning it won’t reverse, but the right daily management can significantly slow joint damage and keep your horse comfortable for years. The most important thing to understand is that no single treatment works on its own. The horses that do best are managed with a comprehensive plan that addresses multiple factors at once.
Recognizing What Arthritis Looks Like
The most common sign of arthritis in horses is lameness, but it doesn’t always show up the way you’d expect. It can be intermittent, appearing one day and vanishing the next, or it can develop so slowly you barely notice the change. Many horses with early arthritis look stiff when they first come out of their stall or begin working, then move more freely after warming up. That pattern of “working out of it” is one of the earliest and most frequently missed signals.
As the condition progresses, you may notice a reduced range of motion in one or more joints, swelling around the affected area, heat in the joint, or pain when the joint is flexed or manipulated. These signs tend to worsen over time, so catching them early gives you the widest range of management options.
Keep Your Horse Moving
One of the biggest misconceptions about arthritis is that rest is best. In reality, controlled, consistent movement is one of the most effective tools you have. Prolonged stall rest allows joints to stiffen and muscles to weaken, which accelerates the problem. Turnout, ideally on level ground where your horse can move freely throughout the day, helps maintain joint mobility and supporting muscle strength.
When you ride or work an arthritic horse, build in a longer warm-up than you normally would. Start with walking on a loose rein for at least 10 to 15 minutes before asking for anything more demanding. Cool-down matters equally. Gentle stretching and massage after work can help reduce post-exercise stiffness. The goal is to maintain fitness without pushing through pain. Low-impact, steady work like walking and light trotting on good footing is more beneficial than short, intense sessions. Avoid deep, uneven, or hard ground, which puts extra strain on compromised joints.
Weight Management Makes a Measurable Difference
Excess body weight directly increases the mechanical load on every joint with every stride. In humans, losing just one pound of body weight removes roughly four pounds of force from the knee. In dogs with osteoarthritis, an 11 to 18 percent reduction in body weight measurably reduced lameness. The same principle applies to horses. A 1,200-pound horse carrying even 100 extra pounds is compounding the stress on already damaged cartilage thousands of times per day.
The target for an arthritic horse is a body condition score of 4 to 5 on the standard 9-point scale. That means ribs you can easily feel with light pressure but not see, a level topline, and no cresty neck or fat pads along the tailhead. If your horse is above that range, work with your vet to reduce caloric intake gradually. Replacing rich pasture time with a grazing muzzle, cutting concentrates, and substituting low-calorie forage can all help without leaving your horse feeling deprived.
Hoof Care and Shoeing Adjustments
The way your horse’s hooves are trimmed and shod has a direct effect on how much force travels through arthritic joints. A long toe, for example, increases the leverage the foot has to overcome at every step, forcing the horse to work harder to break over (lift and roll forward off the toe). That extra effort magnifies pain in the lower joints. Regular farrier visits, typically on a 5- to 6-week cycle, are essential for keeping the hoof balanced and the breakover manageable.
For horses with arthritis in the lower limbs, farriers often use rocker or rolled-toe shoes. These artificially shorten the lever arm in front of the foot’s center of rotation, making it easier for the horse to move forward without straining the joint. In some cases, the farrier will roll the entire perimeter of the shoe, including the heels, to reduce range-of-motion extremes in all directions.
Proper heel support is equally important. Underrun, low-angled heels shift weight backward and allow the hoof to sink, stressing the navicular area and coffin joint. Egg bar shoes can help by extending the bearing surface behind the foot, spreading the horse’s weight over a larger area. Aluminum shoes, which weigh about a third as much as steel, reduce the effort required to pick up and swing each limb. Synthetic shoes offer the added benefit of shock absorption, dampening the concussive force that travels up through the joints on hard ground. The overarching goal is to balance the foot properly, ease breakover, support the heels, and align the hoof-pastern axis so forces distribute evenly through the limb.
Anti-Inflammatory Medications
Nonsteroidal anti-inflammatory drugs (NSAIDs) are the backbone of pharmaceutical pain management for equine arthritis. The two most commonly used are phenylbutazone (“bute”) and firocoxib. Both reduce inflammation and pain, but firocoxib is designed to be more targeted, potentially causing fewer gastrointestinal side effects. That said, firocoxib still carries risks: mouth and tongue ulcers, kidney effects, weight loss, and changes in eating or drinking habits are all possible. Treatment courses are typically limited to 14 days at a time, and you should never combine two NSAIDs or give an NSAID alongside a corticosteroid without veterinary direction.
Watch for warning signs while your horse is on any NSAID. Sores or redness around the mouth and lips, yellowing of the gums or whites of the eyes, changes in urination, unexpected weight loss, or behavioral shifts like unusual lethargy all warrant stopping the medication and calling your vet.
Joint Injections
When oral medications aren’t enough, joint injections can deliver relief directly where it’s needed. The two most common injectables are corticosteroids and hyaluronic acid. Corticosteroids are potent anti-inflammatories that can dramatically reduce pain and swelling. Hyaluronic acid works differently: it restores the lubricating properties of the joint fluid, improving the joint’s ability to cushion and glide.
These injections are typically performed by a veterinarian under sterile conditions, sometimes guided by ultrasound. The effects aren’t permanent. Depending on the severity of the arthritis and the joint involved, a corticosteroid injection may provide weeks to months of relief before needing to be repeated. Many vets combine both substances in a single injection to address inflammation and lubrication at the same time. Joint injections work best as part of a broader plan that includes exercise, weight management, and hoof care, not as a standalone fix.
Regenerative Therapies
Newer biological treatments are becoming more available and showing promising results. The three main options are autologous conditioned serum (sometimes called IRAP), platelet-rich plasma (PRP), and stem cell therapy.
Autologous conditioned serum is made from your horse’s own blood. The blood is processed to concentrate natural anti-inflammatory proteins, then injected back into the affected joint. Clinical trials have shown significant improvement in both the outward signs and the internal condition of arthritic joints compared to placebo treatment.
PRP also uses your horse’s blood, concentrating the platelets and growth factors that support tissue repair. While most of the strongest evidence for PRP involves tendon and ligament injuries, the healing signals it delivers can benefit inflamed joint tissues as well.
Stem cell therapy, using cells typically harvested from bone marrow, has demonstrated the ability to reduce joint inflammation more rapidly than conventional treatments. Horses treated with stem cells in clinical trials were able to return to their prior level of athletic work. Repeated treatments did not produce adverse reactions, which is encouraging for long-term management. These therapies are more expensive and less widely available than traditional injections, but they offer options for horses that aren’t responding well to standard treatments.
Joint Supplements
Oral joint supplements containing glucosamine, chondroitin, and hyaluronic acid are among the most widely purchased products in the equine market, but the evidence behind them is mixed. The suggested dose for glucosamine in horses is around 10,000 mg per day, yet products on the market vary wildly, with labeled doses ranging from 1,800 to 10,000 mg daily. More importantly, oral glucosamine has only about 5 percent bioavailability in horses, meaning 95 percent of what your horse swallows never reaches the joint in a usable form. Research from Mississippi State University found that oral dosing resulted in concentrations in both blood and joint fluid that were too low to meaningfully affect joint cells.
This doesn’t mean supplements are worthless for every horse. Some owners report noticeable improvement, and there may be mechanisms at play that current studies haven’t fully captured. But if you’re spending significant money on supplements while skipping farrier visits or avoiding a weight management plan, your priorities are likely reversed. Put the proven interventions first and treat supplements as an optional addition.
Shockwave Therapy
Extracorporeal shockwave therapy uses focused pressure waves to stimulate healing in damaged tissues. The American Association of Equine Practitioners recognizes it as an evidence-based treatment for osteoarthritis, among other musculoskeletal conditions. Sessions are typically spaced a few weeks apart, with the number and energy levels tailored to the individual horse’s condition and response. It should only be performed by a licensed veterinarian, and it works best as one piece of a comprehensive treatment plan rather than a standalone solution.
Stall and Turnout Environment
Where your horse stands for hours each day matters more than most people realize. Hard surfaces like concrete and asphalt are tough on joints, increasing stiffness and discomfort. If your barn has concrete floors, thick rubber stall mats are the single best investment you can make. Top them with generous bedding. Softer natural flooring materials like clay, topsoil, or sand rate well for joint comfort and offer some natural give. Wood flooring also helps by insulating the horse from cold ground, which can worsen stiffness.
Beyond the stall, think about the terrain in turnout areas. Level, well-maintained footing without deep mud, frozen ruts, or rocky patches reduces the chance of a misstep that could flare an already compromised joint. In cold weather, arthritic horses often do better with a lightweight blanket to keep muscles warm and reduce morning stiffness. The less time your horse spends standing on hard, cold surfaces, the more comfortable those first steps out of the stall will be.