What causes windgalls in older horses?
Share This Guide
Read time: 3 minutes
Overview
Windgalls in older horses are usually linked to wear and tear in the lower limb, repeated work, or mild fluid build-up around the joints and tendon sheaths. They’re fairly common and don’t always mean your horse is in pain, but it’s worth keeping an eye on any change in size, heat, or lameness.
In many cases, the cause is a mix of age, workload, conformation and how the legs cope with day-to-day exercise and turnout. You can often monitor the pattern at home, but you can’t tell the exact cause just by looking.
Things To Check
1. Check whether the swelling is on one leg or both, and whether it stays the same or changes through the day.
2. Feel for heat, tenderness or any reaction when you touch the area gently.
3. Look for lameness, shortened stride, stiffness or reluctance to bend, turn or work.
4. Notice whether the swelling seems worse after rest, hard work, muddy turnout or long travel.
5. Inspect the lower leg for cuts, scabs, skin irritation or any signs of infection.
6. Check whether the horse has had recent changes in exercise, footing, shoeing, turnout or weight.
7. Compare the leg with the other side, as some windgalls are simply a mild, long-standing difference between limbs.
Common Causes
The most common reason is long-term wear and tear around the fetlock area, especially in horses that have done regular work over the years. This can lead to soft, puffy swelling around the joint or tendon sheath.
Repeated exercise, hard ground, heavy schooling or a history of strain can also make windgalls more noticeable. In older horses, the tissues may be less resilient, so mild swelling can show up more easily.
Some windgalls are just a sign of mild fluid build-up rather than anything active or painful. These may become more obvious after exercise and then settle again with rest.
Less commonly, swelling around the lower leg can be linked to injury, inflammation, infection or an underlying joint problem. Those causes are more likely if the leg is hot, painful, uneven or the horse is lame.
What To Do
Keep a simple note of when the swelling appears, how long it lasts and whether it changes after exercise or turnout. Photos can help you compare one day to the next.
Maintain steady, sensible exercise where possible, because some horses are stiffer when they stand for long periods. Avoid sudden changes in work or surface if the legs seem prone to filling.
Check turnout conditions too. Mud, long box rest and limited movement can all make lower legs look fuller in some horses.
If the windgalls are mild and stable, routine monitoring is often the main thing owners do. If they’re changing, painful or affecting how the horse moves, get veterinary advice.
Related Questions
Are windgalls painful in horses?
Can windgalls come and go after exercise?
What is the difference between windgalls and filled legs?
Atlas is here to support owners with practical, easy-to-understand guidance. It is not a substitute for professional veterinary advice. If you're concerned about your animal's health, symptoms worsen, or something doesn't feel right, contact your vet.