What causes windgalls with heat but no obvious lameness? | arlo.® Atlas

Read time: 3 minutes

Overview

Warm windgalls without obvious lameness are often caused by mild inflammation or extra fluid around the joint or tendon sheath. In many horses, they can be linked to exercise, work on harder ground, turnout, or a small strain that isn't causing a clear limp.

They can also be part of a long-standing, stable change that feels warm at times but doesn't mean the horse is immediately lame. The key is to watch for pattern changes, swelling, tenderness, or any sign that the horse is becoming uncomfortable.

Things To Check

1. Check whether the heat is in one leg or both, and whether it seems the same on each side.

2. Look for any swelling, puffiness, filling, or a change in shape around the fetlock or lower leg.

3. Feel whether the area is only warm, or also painful when you touch it or flex the joint gently.

4. Note whether it appears after work, after turnout, after box rest, or first thing in the morning.

5. Check for any cuts, scabs, mud fever, or other skin irritation nearby that could be contributing to heat.

6. Watch the horse on a straight line and on a circle for any shortness of stride, stiffness, or reluctance to turn.

7. Compare the leg with the horse's usual baseline, because some horses naturally have mild windgalls that come and go.

Common Causes

The most common cause is simple fluid build-up or mild irritation within the joint or tendon sheath, especially after exercise or reduced movement. This often shows as soft swelling or warmth without an obvious limp.

Windgalls can also be more noticeable after harder work, concussion on firm ground, or a period of standing in for longer than usual. In these cases the heat may settle with rest and normal movement.

Less commonly, heat may be linked to a small sprain, strain, or an early inflammatory problem that hasn't yet caused clear lameness. Skin irritation or infection nearby can also make a lower leg feel warm.

If the warmth is persistent, increasing, or comes with swelling and pain, it's worth taking it more seriously even if the horse is still walking normally.

What To Do

Keep a simple record of when you notice the heat, how long it lasts, and whether it changes after exercise or turnout. That pattern often tells you more than a single check.

Make sure the horse has sensible daily movement, because prolonged standing can make filling and warmth look worse. If the horse is in work, consider whether the workload, surface, or routine has changed recently.

Check the leg regularly after exercise and when the horse is cold and rested, so you can compare like with like. If there is any skin issue nearby, keep the area clean and dry as part of normal leg care.

If the warmth keeps returning, spreads, or starts to affect the way the horse moves, ask your vet for advice. Even without obvious lameness, a vet can help assess whether it looks like simple windgalls or something that needs closer attention.

Products That May Help

For horses with lower leg filling, muddy turnout or routine leg care needs, a practical cleaning routine can make it easier to keep an eye on changes and maintain the area between checks.

Hoof, Leg & Mud Care

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