Splint Boots

Splint boots are protective leg gear designed to shield the cannon bone area of the front legs from strikes that occur when a horse's hind foot contacts the front leg during movement. This type of interference, sometimes called brushing or forging, happens more commonly than many owners realize, and the consequences range from minor scrapes to significant injuries that sideline a horse for weeks. The simple precaution of wearing splint boots during exercise dramatically reduces the risk of these self-inflicted injuries.

The name comes from the splint bones, the small bones that run along either side of the cannon bone in the lower leg. These bones sit just beneath the skin with minimal soft tissue protection, making them vulnerable to impact trauma. A strike from a shod hoof can cause painful bruising, cuts, or even splint bone fractures if the impact is severe enough. Splint boots wrap around the front of the leg to absorb and deflect these blows before they reach the bone.

Horses that interfere do so for various reasons. Conformational factors like being base narrow or having offset knees make some horses naturally prone to brushing. Young or unbalanced horses often interfere as they develop strength and coordination. Fatigue during hard work causes even well-conformed horses to travel sloppily and hit themselves. Changes in footing, especially deep or uneven ground, increase interference risk. Rather than trying to predict which rides might cause problems, many owners simply use splint boots routinely during any type of exercise.

Splint boots differ from other protective leg gear in their specific focus on the front of the cannon bone. They typically don't provide the full wraparound coverage of sport boots or the fetlock support of ankle boots. This focused design keeps them lightweight and allows good airflow while protecting the most vulnerable area. For horses that need more comprehensive protection, combination boots that include splint coverage exist, but basic splint boots remain popular for everyday use.

This guide covers everything you need to know about selecting, fitting, and using splint boots effectively. You'll understand when these boots are appropriate, how to choose the right pair for your horse, and how to apply them correctly so they stay in place and provide genuine protection. Whether you're protecting a horse that you know interferes or simply taking sensible precautions, proper splint boot use keeps legs safe from unnecessary damage.

The cannon bone area has minimal natural protection, with skin, thin connective tissue, and the splint bones lying just beneath the surface. Unlike areas cushioned by muscle or fat, impacts here transmit directly to bone. A single hard strike from a shod hind hoof can cause the kind of trauma that results in splints, those hard bumps that develop when the splint bones react to injury. While many splints eventually resolve without lasting lameness, they require time off from work and can permanently change the leg's appearance.

Preventing injuries always costs less than treating them, both financially and in terms of lost training time. A horse sidelined with a leg injury misses weeks or months of conditioning and skill development. For competitive horses, poorly timed injuries can derail entire show seasons. For horses just being enjoyed by their owners, injuries mean time not spent doing what you both love. The few minutes spent applying splint boots before each ride represents minimal effort compared to managing the consequences of a preventable injury.

Beyond the obvious impact injuries, repeated minor brushing creates cumulative damage that may not be immediately apparent. Chronic low-level inflammation, thickened skin, and scar tissue can develop over time in horses that consistently hit themselves without protection. These changes may eventually affect movement or create permanent sensitivity. Protecting against small impacts matters even when they don't seem immediately problematic.

Splint boots also serve a monitoring function. If you notice marks, rubs, or hair loss on the boots themselves, you've gained information about your horse's movement patterns. A horse that consistently hits the inside of the left boot is telling you something about their way of going that might warrant attention from a trainer or farrier. The boots catch these signals before they become injuries on the leg itself.

For horses being introduced to new work, whether that's jumping, collected dressage movements, or simply higher levels of fitness training, protective boots during the learning phase makes sense. Horses often interfere more when they're learning new skills or building the strength to perform them correctly. As they become more established in their work and develop better balance, interference typically decreases, but protection during the development phase prevents setbacks.

Start with clean, dry legs free of mud, arena footing, or accumulated debris. Applying boots over dirty legs traps particles against the skin, causing irritation and potentially leading to sores during exercise. A quick brush down the front of the cannon bone takes only a moment and ensures the boot sits comfortably against clean hair and skin.

Position the boot with the protective padding over the front and inside of the cannon bone, which is where strikes typically land. Most splint boots are contoured to fit the leg's natural shape, so there's usually a clear inside and outside, and often a left and right designation. The top of the boot should sit below the knee without rubbing against it during movement, and the bottom should extend down far enough to provide some protection to the fetlock area without interfering with joint movement.

Fasten the closures starting from the top and working downward, similar to the technique for shipping boots. This approach keeps the boot positioned correctly as you secure each strap. Most splint boots use hook-and-loop closures that should be firmly snug without being tight. The boot shouldn't spin on the leg or slide down during movement, but you also don't want circulation-restricting pressure. Running a finger under the edge confirms the fit isn't too tight.

Watch your horse take a few steps after both boots are on to check that everything stays in place and the horse moves normally. Some horses need a moment to adjust to the sensation of wearing boots, particularly if they're not used to them, but they should settle quickly. Excessive high-stepping or odd movement that persists suggests either the boots are uncomfortable or the horse needs more gradual introduction to wearing them.

After your ride, remove the boots promptly to allow the legs to breathe and cool down naturally. Check underneath for any signs of rubbing, heat, or irritation. Run your hands down the protected area to feel for any sensitivity that might indicate a strike absorbed by the boot. This post-ride check takes just a moment and helps you catch any issues early while also confirming that your protection strategy is working.

Clean the inside of the boots after each use to remove sweat and dirt that accumulates against the padding. A damp cloth usually suffices for daily maintenance, with more thorough washing when needed. Allow boots to dry completely before storing them to prevent mildew or deterioration of the materials. Well-maintained boots last longer and remain more comfortable for the horse.

Basic splint boots come in a range of materials and price points. Entry-level boots made from synthetic materials with foam padding provide adequate protection for everyday use at reasonable cost. Higher-end options may use neoprene, leather, or specialized materials that offer better durability, breathability, or impact absorption. For most recreational riders, mid-range boots offer the best balance of protection, comfort, and value.

Sizing varies between manufacturers, so measuring your horse's leg before purchasing helps ensure proper fit. Most brands offer small, medium, and large sizes, with some also providing pony and warmblood options at the extremes. A boot that's too small won't provide adequate coverage and may be uncomfortable, while one that's too large shifts during movement and can cause rubbing. When in doubt between sizes, the larger size usually works better since you can tighten closures to secure the fit.

Closure systems range from simple hook-and-loop straps to more elaborate buckle or clip arrangements. Hook-and-loop remains popular because it's easy to adjust and secure quickly. However, these closures wear out over time and may need replacement or indicate when the entire boot should be retired. Some riders prefer boots with additional security features like strike plates over the primary protection zone or double-layer construction in high-impact areas.

Consider how the boot will perform in your typical riding conditions. Riders who work in wet or muddy environments need boots with quick-drying materials and drainage features. Horses that generate significant heat during work may benefit from boots with ventilation or moisture-wicking properties. Those working primarily in dry arenas have more flexibility in material choices. Match the boot's characteristics to your actual use rather than buying the fanciest option that may not suit your needs.

Keeping spare boots on hand means a torn or worn-out boot doesn't leave your horse unprotected. Boots do wear out, and discovering damage right before a ride creates a difficult choice between riding unprotected or not riding at all. Having a backup pair, even inexpensive ones, ensures you always have functional protection available.

Most owners who use splint boots apply them for every riding session, making the boots part of the standard tacking-up routine. This consistent approach ensures protection whenever the horse is working without requiring you to assess whether each particular ride presents interference risk. Since factors like footing, fatigue, and fitness level all influence how a horse travels, routine use eliminates the guesswork.

Some riders reserve splint boots for higher-intensity work that increases interference likelihood. Jumping sessions, collected work, speed work, or rides in challenging footing might warrant protection while quiet trail rides might not. This selective approach works if you're comfortable assessing risk, but remember that interference can happen during any type of work. A horse that never hits itself during flatwork might interfere at the canter for the first time during an otherwise uneventful ride.

Removing boots immediately after work prevents overheating and allows natural airflow around the legs during the cooling-down period. Some riders remove boots for the walking portion of their cool-down, while others leave them on until the horse is completely finished working and back in cross-ties. Either approach works as long as the boots come off reasonably promptly rather than staying on for extended periods after exercise ends.

Between uses, store boots in a dry location where they can air out completely. Hanging them or storing them open allows interior padding to dry rather than staying damp from trapped sweat. Boots stored while still moist develop odors, may grow mold or mildew, and deteriorate faster than properly dried equipment. A dedicated spot in your tack area for boots helps ensure they get proper care between uses.

Inspect boots regularly for wear that compromises their protective function. Padding that has compressed, closures that no longer hold securely, and shells that have cracked or torn all reduce effectiveness. Replace boots when they show significant wear rather than continuing to use compromised equipment that might fail when you need it most.

Horses that aren't accustomed to wearing boots may need gradual introduction. Start by letting the horse see and sniff the boots, then hold them against the leg without fastening. Once the horse accepts this, fasten the boots loosely for short periods while the horse stands in cross-ties or grazes. Progress to walking, then light work, extending the duration as the horse becomes comfortable. Most horses adapt within a few sessions, but rushing can create resistance that makes booting up difficult long-term.

Boots that consistently slip or rotate indicate sizing or fitting problems. If the closures are fully tightened and the boot still moves, try a different size or style that fits your horse's leg shape better. Some horses with very round or very flat cannon bones need specific boot designs to stay in place. Experiment with different options rather than fighting the same problem repeatedly.

Heat buildup under boots during extended or intense work can concern some owners. While some warmth is normal and even beneficial for promoting blood flow, excessive heat isn't desirable. Boots with ventilation features help, as does removing boots during rest breaks in long sessions. After-work icing or cold hosing addresses any temporary heat accumulation and benefits the leg whether boots were worn or not.

If you notice consistent rubbing or hair loss in specific spots, the boot may not fit your horse's conformation properly. Sometimes adjusting the position slightly resolves the issue. In other cases, a different boot style that sits differently on the leg works better. Persistent rubbing shouldn't be ignored because the irritation worsens over time and can create open sores that take time to heal.

Make splint boots a natural part of your routine rather than an afterthought. Keep them with your other tack so they're always accessible when you're getting ready to ride. The protection they provide takes minimal effort to apply and can prevent injuries that cause significant disruption to your riding program. When booting becomes automatic, you never have to wish you'd used them after discovering an injury that didn't need to happen.