A sprained ankle typically looks swollen, puffy, and often discolored compared to your uninjured ankle. The outer side of the ankle is the most common location, and depending on how severe the sprain is, you might see anything from mild puffiness to dramatic bruising that spreads across the foot. Here’s what to expect at each stage and severity level.
What a Mild Sprain Looks Like
A grade 1 sprain involves stretching or slight tearing of the ligament. Visually, you’ll notice mild swelling around the outside of the ankle, and the area may look slightly puffy compared to your other foot. There’s usually little to no bruising. The skin might appear slightly red or flushed from inflammation, but the ankle keeps its normal shape. It still feels stable when you stand on it, and the swelling is often subtle enough that you might question whether you actually injured it.
Moderate and Severe Sprains
A grade 2 sprain involves a partial tear, and the visual difference from a mild sprain is noticeable. Swelling is more pronounced, often creating a visible “egg-shaped” lump on the outer ankle. Bruising appears as blue, purple, or dark patches around and below the injury. The ankle may look noticeably larger than your other one, and the skin can feel tight from the swelling underneath.
A grade 3 sprain is a complete tear of the ligament, and it looks the worst. Severe swelling can extend across the entire ankle and into the foot, sometimes making it hard to see the normal bony contours. Bruising is widespread and intense. The ankle may feel loose or wobbly when you try to move it, which reflects the lost structural support from the torn ligament. Some people describe the joint looking “shapeless” compared to normal.
How Bruising Changes Over Time
Bruising from a sprained ankle doesn’t always show up right away. With moderate and severe sprains, small blood vessels tear and leak blood into surrounding tissues. This discoloration can take several days to fully appear, so your ankle may look worse on day three or four than it did the evening of the injury. The bruising often migrates downward with gravity, meaning you might notice purple or yellowish patches on the side of your foot, your toes, or even your heel even though the actual sprain is higher up.
The classic color progression starts as dark blue or purple, shifts to green, and then fades to yellow or brown as your body reabsorbs the leaked blood. Most bruising clears within about two weeks.
Swelling Peaks in the First Two Days
Swelling is usually most dramatic in the first 24 to 48 hours after the injury. During this window, the ankle can balloon significantly, especially if you stay on your feet or don’t elevate and ice it. If you press gently on the swollen area and your finger leaves a temporary dent that slowly fills back in, that’s called pitting edema. It means fluid has accumulated in the tissue. The deeper the dent and the longer it takes to refill, the more fluid has built up.
After the initial peak, swelling gradually decreases if you’re managing the injury with rest, ice, and elevation. A mild sprain typically looks normal again within one to three weeks. A moderate sprain takes three to six weeks to fully resolve. A severe sprain can take several months before the ankle looks and feels completely normal.
Where the Swelling Sits Matters
Most ankle sprains affect the ligaments on the outer (lateral) side, so swelling and bruising concentrate around and just below the bony bump on the outside of your ankle. If instead you notice swelling and tenderness higher up on your leg, between your shinbone and the smaller bone beside it, that pattern suggests a high ankle sprain. High ankle sprains involve the ligaments that connect the two lower leg bones together, and the swelling tends to sit above the ankle joint rather than around it. They’re less common but take longer to heal.
Swelling on the inner side of the ankle, around the bony bump on the inside, points to a medial sprain, which is rarer because those ligaments are stronger.
How to Tell It Apart From a Fracture
A sprained ankle and a broken ankle can look similar in the first few hours, with both causing swelling, bruising, and pain. But certain visual clues suggest a fracture rather than a sprain. An obvious deformity, like a hard bump, a visible knot, or the ankle sitting at an unusual angle, points toward a break. If the bony bumps on either side of your ankle look asymmetrical or one appears pushed out of place, that’s another red flag.
Sprains produce more generalized, diffuse swelling, while fractures sometimes cause intense, localized swelling directly over the bone. The most reliable visual clue is deformity: a sprained ankle looks swollen and bruised but keeps its basic shape, while a fracture can visibly alter the contour of the joint.
Clinicians use a set of rules to decide whether an X-ray is needed. The key triggers are inability to bear weight, inability to walk four steps, or specific tenderness when pressing directly on the bony tips on either side of the ankle. If any of those apply to you, imaging is warranted to rule out a break.
What the Ankle Looks Like as It Heals
In the first week, expect the swelling to slowly shrink and the bruising to spread and change color. By week two, most of the discoloration should be fading to yellow or brown, and the ankle’s normal shape starts returning. You may still notice mild puffiness at the end of the day or after being on your feet for extended periods, even weeks after the initial injury. This residual swelling is normal and tends to be the last visible sign to fully resolve.
If swelling hasn’t improved at all after a week, or if new bruising continues to appear, those are signs the injury may be more serious than initially thought and warrants a closer look.