A broken metatarsal typically shows up as noticeable swelling across the top or side of the foot, often accompanied by bruising that spreads over hours or days. Depending on the severity, you might also see a visible bump or deformity where the bone has shifted out of place. The appearance varies based on which metatarsal is broken, how it broke, and whether the bone fragments have moved apart.
Swelling and Bruising Patterns
Swelling is usually the first and most obvious sign. It tends to concentrate over the middle or outer edge of the foot, depending on which of the five metatarsal bones is involved. A break in the fifth metatarsal (the bone running to your smallest toe) produces swelling along the outer border of the foot, while fractures of the second or third metatarsals cause puffiness across the top of the midfoot. The swelling can be significant enough to make your foot look noticeably wider or thicker than the other one.
Bruising usually follows within a few hours. It often starts as a reddish discoloration near the fracture site and deepens to purple or dark blue over the first day or two. In some cases, bruising migrates downward with gravity, so you may notice discoloration spreading toward the sole of your foot or around the toes even though those areas aren’t injured. Skin that turns a deep purple, especially if it keeps getting darker, is a sign of more significant tissue damage that needs prompt attention.
When the Bone Shifts: Visible Deformity
Most metatarsal fractures stay in alignment, meaning the broken ends of the bone remain in their normal position. When that’s the case, you won’t see any obvious change in the shape of your foot beyond swelling. But if the fracture is displaced, the foot can look visibly different. A Jones fracture (a specific break near the base of the fifth metatarsal) can produce a noticeable bump or knob along the outer edge of the foot.
In more severe displaced fractures, the metatarsal head (the rounded end near the toe) tends to shift downward toward the sole of the foot, pulled by the tendons and small muscles attached to it. This can make the affected toe appear slightly shorter or angled differently than the others. In rare cases, the broken bone can push against the skin from underneath, creating a visible “tenting” effect where the skin stretches tightly over the displaced fragment. Multiple metatarsal fractures are more likely to cause this kind of visible misalignment than a single break.
Acute Breaks vs. Stress Fractures
The appearance differs depending on whether the break happened suddenly or developed gradually. An acute fracture from a fall, twist, or direct impact produces immediate, dramatic swelling and bruising. You’ll likely struggle to put any weight on the foot right away, and the visual changes are hard to miss.
Stress fractures look much more subtle. These are tiny cracks that develop over weeks from repetitive activity, common in runners and people who suddenly ramp up their exercise. A stress fracture might cause only mild, localized swelling over the top of the foot, sometimes so slight you’d only notice it by comparing both feet side by side. Bruising is often absent entirely. The main clue is a specific tender spot on the bone that hurts during activity and feels better with rest. Because stress fractures start as “bone bruises” before progressing to hairline cracks, they can look like almost nothing on the outside while still causing real pain.
What Shows Up on an X-Ray
From the outside, a broken metatarsal can sometimes look like nothing more than a swollen, bruised foot, which is why imaging matters. On an X-ray, an acute fracture shows up as a visible line or gap in the bone. A Jones fracture appears as a horizontal line running across the base of the fifth metatarsal. Avulsion fractures (where a small chip of bone gets pulled away) show a tiny fragment separated from the main bone.
Stress fractures are trickier. They’re often invisible on initial X-rays because the crack is too fine to detect. The fracture typically only becomes visible on X-rays once the bone starts its healing response, producing a thickening of the outer bone layer that shows up as a hazy white line weeks after symptoms began. If a stress fracture is suspected but the X-ray looks normal, an MRI or bone scan can catch it much earlier.
What Recovery Looks Like
For fractures where the bone stays aligned, treatment usually means a cast, splint, or rigid walking boot for 6 to 8 weeks. You may need crutches and be told to keep weight off the foot entirely at first. Your doctor will guide you on when to start moving the foot again, which can range from 3 weeks to 8 weeks depending on how the bone is healing.
Surgery becomes more likely when the bone fragments have shifted significantly. For fifth metatarsal fractures, the general threshold is displacement greater than 3 millimeters or a step-off of more than 1 to 2 millimeters at the joint surface. If your foot shows visible deformity, that’s a strong signal the bone has moved enough to potentially need surgical repair.
During healing, the swelling and bruising gradually fade. Swelling often lingers longer than people expect, sometimes persisting mildly for several months even after the bone itself has healed. The bruising typically resolves within two to three weeks, cycling through the familiar color progression from purple to green to yellow before disappearing.