Why Your Horse Might Be Lopsided (And How Your Saddle Can Help or Hurt)
Have you ever felt like you’re constantly shifting your weight to one side in the saddle? Or noticed your saddle pad is always slightly askew after a ride, no matter how carefully you tack up?
You might chalk it up to your own crookedness, but it could be a subtle sign from your horse that they’re not perfectly symmetrical. And that’s completely normal.
Just like most people are right- or left-handed, horses have natural imbalances. A landmark review on equine asymmetry confirmed that it’s a common trait, stemming from genetics, training, or even pasture habits. This lopsidedness, especially in the shoulders, is one of the most common challenges in saddle fitting.
The question isn’t whether your horse is asymmetrical, but how you manage it. The wrong approach can create pressure points and hinder muscle development, while the right one can foster balance and unlock a new level of freedom in your horse’s movement.
What Does Horse Asymmetry Look Like?
When we talk about an asymmetrical horse, we’re usually referring to uneven muscle development, most often in the shoulder area right behind the withers. One shoulder, typically the left, is often larger and more developed, while the right is smaller or appears hollow.
You might see:
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A ‘High’ and ‘Low’ Shoulder: One side of the wither appears steeper, while the other is flatter and more muscular.
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Uneven Muscle Bulk: When standing behind your horse, you can see that the muscles on either side of the spine are not mirror images.
This imbalance isn’t just cosmetic; it has real-world consequences for your ride.
Common signs of an underlying asymmetry include:
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Your saddle consistently slipping to one side (usually toward the less-developed shoulder).
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Feeling like one stirrup is longer than the other.
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The horse bending more easily in one direction than the other.
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Difficulty picking up or maintaining a specific canter lead.
A 2005 study by Dr. Sue Dyson highlighted that many riders don’t recognize the signs of poor saddle fit, which can be caused or worsened by asymmetry. Learning to spot these subtle cues is the first step toward helping your horse.
The Common ‘Fix’: Why Shimming Isn’t a Long-Term Solution
When faced with a saddle that slips or rocks, the first instinct is often to reach for shims or a specialized half-pad. The logic seems sound: fill the ‘hollow’ side to level the saddle.
Shims are inserts, typically made of foam, felt, or gel, placed in the pockets of a half-pad to add thickness to one area. While they can be a useful diagnostic tool or a temporary measure for a horse rapidly changing shape, they’re problematic as a long-term solution.
Think of it like putting an insert into one shoe because your feet are slightly different sizes. It might feel better for a moment, but it doesn’t change the shoe itself—it just adds another layer.
Research from 2010 found that even with a well-fitting saddle, adding a half-pad increased peak pressure on the horse’s back. Using a shim concentrates that pressure in a new area. Instead of solving the problem, you’re often just moving it elsewhere.
Here’s why shims fall short:
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First, they create new pressure points. A shim lifts the saddle on the hollow side but doesn’t change the shape of the panel contacting the horse. This can create an edge or ridge of pressure.
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Second, they can restrict muscle growth. By constantly filling the hollow space, a shim can prevent the weaker shoulder muscles from having the room they need to develop. You’re essentially locking the asymmetry in place.
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Third, they are a static solution for a dynamic problem. Your horse’s back changes with every step, and over months of training, their entire shape can transform. Shims don’t adapt; they are a fixed patch on a constantly evolving structure.
A Smarter Approach: Adapting the Saddle to the Horse
Rather than just adding layers between the horse and saddle, a more sophisticated and effective approach is to change the shape of the saddle itself. This is possible with saddles that feature individually adjustable wool-flocked panels.
Instead of filling a gap with a shim, a qualified fitter can adjust the flocking inside the saddle panels to perfectly mirror the horse’s back as it is today. The panel on the more developed side can be flocked to be slightly thinner, while the panel on the hollow side can be made fuller.
This method offers three distinct advantages:
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It provides true pressure distribution. The entire surface of the panel remains in even, gentle contact with the horse’s back, eliminating the risk of ridges and pressure points caused by shims.
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It encourages symmetrical development. By creating a perfectly balanced mold of your horse’s back, the saddle provides stability without restriction. This gives the less-developed muscles the room and support they need to strengthen and grow.
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It’s a dynamic, adaptable solution. As your horse develops through corrective training, the saddle can be readjusted. The fitter can reduce the flocking on the hollow side as the muscles build, ensuring the saddle continuously supports their progress. The saddle evolves with your horse.
Getting the Foundation Right First
Adjusting for asymmetry is a crucial fine-tuning step, but it only works if the saddle’s foundation is correct. Before addressing lopsided shoulders, you have to ensure the core elements of fit are in place.
First and foremost is saddle tree width. The saddle tree must be wide enough to accommodate the larger, more developed shoulder without pinching. Attempting to fix an asymmetry issue with a saddle that is fundamentally too narrow will only cause more pain and resistance.
Similarly, other conformational traits must be considered, like a short back where every inch of panel contact is critical. Once the basics are right, you can learn how to assess saddle balance and see if asymmetry is the final piece of the puzzle.
The Rider’s Role in a Symmetrical Future
A well-fitted, adjustable saddle is a powerful tool, but it’s part of a team effort. Corrective training, targeted groundwork, and bodywork from a qualified equine physiotherapist are essential for addressing the root cause of the imbalance.
Rider straightness also plays a key role. An unbalanced rider can create or worsen a horse’s asymmetry. By understanding the biomechanics of both horse and rider, you can become more aware of your own patterns and work towards a more balanced, effective seat.
Frequently Asked Questions (FAQ)
Is my horse permanently asymmetrical?
Not necessarily. While some asymmetry is natural, significant muscular imbalances can often be improved with a combination of correct training, targeted bodywork, and a saddle that allows the weaker muscles to develop properly.
Can I use a shim temporarily?
In some specific cases, like a horse recovering from an injury or undergoing rapid muscle change, a shim can be a short-term tool under the guidance of an expert fitter. However, due to the risk of creating new pressure points, it is not recommended as a long-term solution.
How often should I have my adjustable saddle checked?
For a horse in a corrective training program aimed at improving symmetry, it’s wise to have the fit checked every 3-6 months. Their shape can change surprisingly quickly once the restriction of an ill-fitting saddle is removed. For a horse in regular work, an annual check is usually sufficient.
Will fixing the saddle make me a better rider?
It will make it much easier for you to be a balanced and effective rider. An unstable saddle that constantly slips to one side forces the rider to compensate, often creating crookedness and tension in their own body. A stable, balanced saddle provides a secure foundation for a correct seat.
Your Path to a More Balanced Partnership
Seeing asymmetry in your horse isn’t about finding a flaw. It’s an opportunity to listen more closely and provide the support they need to move with greater comfort, balance, and freedom.
The first step is to observe. Look at your horse’s shoulders. Notice how your saddle sits after a ride. Pay attention to how you feel in the saddle. By choosing to adapt the saddle to your horse, rather than just filling a gap, you are investing in their long-term health and athletic potential.
A truly well-fitted saddle doesn’t just sit on a horse’s back—it communicates with it, adapting and supporting every step of your journey together.
