A broken collarbone typically announces itself with sharp pain at the top of the chest or shoulder, especially when you try to move your arm. Most people also notice swelling, bruising, and a visible bump or deformity near the shoulder. If you’re reading this after a fall, a sports collision, or a direct hit to the shoulder area, here’s how to tell whether that pain is a fracture or something less serious.
The Most Common Signs
The collarbone sits just under the skin with very little muscle or fat covering it, which means fractures here tend to produce obvious, visible changes. The hallmark symptoms include:
- Pain that spikes with movement. Even small motions like lifting your arm or rotating your shoulder will increase the pain sharply. Most people instinctively cradle the injured arm against their body to keep it still.
- Swelling and bruising. The area over the break swells quickly, and bruising often spreads across the upper chest and shoulder within the first day.
- A visible bump or deformity. Because the bone sits so close to the surface, a displaced fracture often creates a noticeable lump where the broken ends push against the skin.
- A grinding or crunching sensation. Doctors call this crepitus. If you feel or hear a crackling, gritty sensation when you try to move your shoulder, that’s the broken bone ends rubbing together. Don’t test for this on purpose, as it’s painful and can cause further damage.
- Skin tenting. In more severe breaks, a sharp bone fragment pushes the skin upward into a tent-like point. If you gently pinch the skin over the fracture and it looks stretched tight over a sharp edge rather than lying flat, that’s skin tenting. This needs prompt medical attention because the bone fragment can eventually break through the skin.
Stiffness is also common. You may find it nearly impossible to raise your arm above shoulder height on the injured side, and the shoulder itself may droop forward and downward compared to the other side.
Where the Break Usually Happens
About 80% of collarbone fractures occur in the middle third of the bone, roughly halfway between your neck and shoulder. This is the thinnest part of the collarbone and the section most exposed during a fall or impact. Another 10 to 15% break near the outer end, closer to the shoulder joint. The remaining 5 to 8% break near the inner end where the bone meets the breastbone. Middle-third fractures tend to produce the most obvious bumps and deformities because the bone fragments are pulled apart by the muscles attached on either side.
How It Differs in Children
Children’s bones are softer and more flexible than adult bones, so a child’s collarbone often bends and cracks on one side without snapping completely in two. These are called greenstick fractures, named after the way a fresh twig bends and splinters rather than breaking clean. A greenstick fracture may not look dramatically deformed, but the area will be tender, swollen, and possibly bruised. Your child’s arm or shoulder may look slightly bent or twisted compared to the other side.
Young children and toddlers can’t always describe their pain clearly. Watch for a refusal to move one arm, crying when the shoulder area is touched, or holding the arm pressed tightly against the body. Babies with a collarbone fracture (sometimes from birth) may cry when their arm is moved during diaper changes or dressing.
Signs That Need Emergency Care
Most collarbone fractures are painful but straightforward. A smaller number cause damage to the nerves or blood vessels that run just behind the bone. Get to an emergency room if you notice any of these alongside your injury:
- Numbness, tingling, or “electric shock” feelings running down the arm and into the fingers, particularly the thumb and index finger
- A hand that turns white or feels cold, which can signal a damaged or compressed artery
- Swelling in the arm, hand, or fingers that develops after the initial injury
- Difficulty breathing or chest pain, which could indicate a punctured lung (rare, but possible with high-energy trauma)
- Complete inability to move the arm or loss of grip strength
- Skin tenting with blanching, where the skin over the bone fragment turns white or looks like it could break open
Nerve and vascular injuries from collarbone fractures sometimes don’t show up immediately. Arterial damage can remain symptom-free at first, then present later with arm weakness or swelling. If new symptoms appear in the hours or days after your injury, don’t ignore them.
How Doctors Confirm the Break
A standard X-ray confirms most collarbone fractures. The image typically includes a front-facing view of the entire bone from the breastbone to the shoulder joint. A second angled view may be taken to show how far apart the bone fragments have shifted. In most cases, that’s all the imaging you need.
Occasionally, an initial X-ray looks normal even when a fracture is present. If your symptoms strongly suggest a break but the X-ray is clear, you’ll likely be placed in a sling and asked to return in 7 to 10 days for repeat imaging. By then, the body’s early healing response makes even hairline fractures visible on X-ray. For fractures near either end of the collarbone, or when the doctor suspects nerve or blood vessel involvement, a CT scan with 3D reconstruction gives a more detailed picture of how the fragments are positioned and whether surrounding structures are at risk.
For children, ultrasound is an increasingly common option. It avoids radiation exposure and has been shown to accurately identify collarbone fractures with about 96% accuracy in pediatric emergency settings.
What Recovery Looks Like
Most collarbone fractures heal without surgery. Treatment typically means wearing a sling to keep the arm still and letting the bone knit back together on its own. The timeline varies significantly by age:
- Adults: 8 to 12 weeks
- Adolescents: 6 to 8 weeks
- Children under 8: 3 to 6 weeks
- Babies: about 2 weeks
During healing, you’ll likely feel a firm bump forming at the fracture site. This is callus, the new bone tissue your body builds to bridge the gap. The bump may be noticeable for months and can remain slightly larger than the surrounding bone permanently, though it tends to smooth out over time, especially in younger people.
Surgery becomes more likely when the bone fragments are widely separated, when skin tenting threatens to create an open wound, or when nerves and blood vessels are involved. Surgical repair usually involves a metal plate and screws to hold the fragments in alignment while they heal. The recovery timeline after surgery is similar, though physical therapy to restore shoulder range of motion often starts earlier with surgical stabilization.
Regardless of whether you’re treated with a sling or surgery, expect gradual return to full activity. Most people can do light daily tasks within a few weeks, but contact sports and heavy lifting are typically off-limits until the bone has fully healed and shoulder strength has returned.