Your Newborn’s Broken Collarbone: Causes and Recovery
Finding out your newborn has a broken collarbone is terrifying, but it’s also more common than most parents expect. The clavicle is the most frequently fractured bone during birth, and while most cases heal quickly and completely, that doesn’t make the initial shock any easier. This article breaks down how newborn collarbone fractures happen, what the signs look like, and what to expect as your baby heals.
How Newborn Collarbone Fractures Happen
A broken collarbone doesn’t happen randomly during birth. It’s almost always the result of a specific set of physical circumstances during delivery, and understanding what those circumstances look like helps parents make sense of how and why the injury occurred. This section covers the mechanics behind the fracture, the role that shoulder dystocia plays, and the broader risk factors that make some deliveries more dangerous than others.
What Causes a Broken Collarbone During Delivery
The clavicle is the most commonly fractured bone during birth, and its position explains why. It sits between the shoulder and the chest, acting as a strut that holds the shoulder in place. During a vaginal delivery, the baby’s shoulders have to rotate and compress to fit through the birth canal. If that process doesn’t go smoothly, or if the delivering provider applies excessive downward traction on the baby’s head to free a stuck shoulder, the clavicle can snap under the pressure.
In many cases, the fracture happens in a matter of seconds during an otherwise routine delivery. The baby’s anterior shoulder catches behind the mother’s pubic bone, and the force needed to complete the delivery exceeds what the clavicle can absorb. These kinds of delivery complications are more common than most parents realize, and the clavicle fracture itself often isn’t discovered until the baby shows signs of discomfort or limited movement in the hours after birth.
The Role of Shoulder Dystocia
Shoulder dystocia during labor is the single most common cause of newborn collarbone fractures. It occurs when one or both of the baby’s shoulders become lodged behind the mother’s pelvic bone after the head has already been delivered, creating an emergency that requires the provider to act quickly and correctly. Once the head is out but the shoulders are trapped, the baby’s body is essentially stuck between the birth canal and the outside world, and that compression can press the umbilical cord against the pelvic wall or the baby’s own body, restricting blood flow and cutting off the baby’s oxygen supply.
There are well-established clinical maneuvers designed to resolve shoulder dystocia safely, including the McRoberts maneuver, suprapubic pressure, and repositioning the mother onto all fours. When providers follow these protocols calmly and in the right sequence, the shoulder can usually be freed without injury. The fractures tend to happen when a provider skips those steps, panics, or resorts to pulling harder on the baby’s head instead of using the techniques they were trained to perform.
Other Risk Factors
Several factors can increase the likelihood of a clavicle fracture during delivery. Fetal macrosomia, where the baby weighs significantly more than average, is one of the biggest predictors because a larger baby means larger shoulders and a tighter fit through the birth canal. Prolonged labor is another factor, as extended pushing phases put more stress on the baby’s body and increase the chance that manual intervention will be needed to complete the delivery.
Breech positioning, a narrow maternal pelvis, and the use of assistive tools like forceps or vacuum extractors also raise the risk. Importantly, many of these factors are identifiable before delivery through ultrasound measurements, maternal health assessments, and labor monitoring. When providers recognize these risk factors early and plan accordingly, whether that means adjusting the delivery approach or recommending a cesarean section, many collarbone fractures can be avoided entirely.
Recognizing a Broken Collarbone in Your Newborn
A clavicle fracture isn’t always obvious right away. Some are caught within minutes of delivery, while others don’t become apparent until a parent notices something off in the hours or days that follow. This section walks through the signs parents should watch for, how doctors confirm the diagnosis, and why it’s important to look beyond the fracture itself when the delivery was traumatic.
Signs and Symptoms Parents Should Know
The most common early sign is a baby favoring one side, moving one arm normally while keeping the other still or pressed against the body. Parents may also notice crying or fussiness when the affected arm is moved, during diaper changes, or while being dressed. Swelling or tenderness along the collarbone is another indicator, and in some cases bruising on the newborn’s shoulder, neck, or upper chest is visible shortly after birth. A subtle crunching sensation, called crepitus, can sometimes be felt when the area around the fracture is gently touched.
Not every clavicle fracture announces itself immediately. In some cases, the first sign parents notice is a hard lump near the collarbone that appears a week or two after birth. That lump is a callus, the body’s natural response to a healing fracture, and its sudden appearance can be alarming for parents who had no idea the bone was ever broken. If a baby seems uncomfortable when being held or picked up, or consistently resists movement on one side, it’s worth having a pediatrician take a closer look.
How Doctors Diagnose a Clavicle Fracture
Diagnosis usually starts with a physical exam. The pediatrician will gently feel along the baby’s collarbones, comparing both sides for asymmetry, swelling, or tenderness. A noticeable difference in how the baby moves each arm during a startle reflex or when the arms are gently extended can also point toward a fracture on one side. When the physical findings are suggestive, an X-ray confirms the location and severity of the break.
In some cases, especially with hairline or greenstick fractures where the bone cracks but doesn’t fully separate, the initial exam comes back inconclusive. The fracture only becomes apparent on imaging ordered later, often after the callus has already started forming. This delayed diagnosis is relatively common and doesn’t necessarily mean anything was missed, but it does mean that parents who notice any of the signs described above should speak up even if the hospital discharge exam seemed normal.
When Other Injuries Are Present
A broken collarbone during a difficult delivery rarely happens in isolation. The same forces that fracture the clavicle can also damage the brachial plexus, the network of nerves running from the neck through the shoulder that controls movement and sensation in the arm. When both injuries occur together, the baby may show more pronounced weakness or complete lack of movement in the affected arm, going beyond what a fracture alone would explain. Other symptoms of a birth injury to look for include uneven muscle tone, difficulty feeding on one side, and a head that consistently tilts in one direction.
Soft tissue injuries, swelling, and hematomas in the shoulder or neck area can also accompany a clavicle fracture, particularly when forceps, vacuum extraction, or excessive manual traction were involved in the delivery. When multiple injuries are present, it paints a fuller picture of what happened during birth and raises important questions about whether the level of force used was appropriate. A thorough evaluation that looks at the complete set of injuries, not just the fracture, gives parents and their medical team the information they need to plan the right course of treatment and to understand whether something went wrong.
Treatment and Recovery
The good news is that newborn clavicle fractures almost always heal well. Babies’ bones are softer and more flexible than adult bones, and their capacity for repair is remarkable. This section covers how the healing process works, what parents can do at home to keep their baby comfortable, and what to expect at follow-up appointments down the road.
How Newborn Clavicle Fractures Heal
Newborn bones heal faster than bones at any other stage of life. The fracture triggers the body’s natural repair process almost immediately, with new bone tissue forming around the break site within the first week. A soft callus made of cartilage bridges the gap first, followed by hard bone that gradually fills in and strengthens the area over the following weeks. Most newborn clavicle fractures are fully healed within three to four weeks, though the timeline can vary depending on the severity of the break.
Unlike adult fractures, newborn clavicle breaks rarely require casting, splinting, or surgical intervention. The baby’s natural tendency to limit movement on the affected side acts as a built-in form of immobilization, and the rapid rate of bone growth at this age does the rest. In the vast majority of cases, the bone remodels so completely over time that there’s no lasting evidence of the fracture at all.
Caring for Your Baby During Recovery
The most important thing parents can do during recovery is handle their baby gently and minimize unnecessary movement of the affected arm. When dressing or undressing the baby, start with the injured side first to reduce the amount of manipulation needed. Some pediatricians recommend pinning the sleeve of the baby’s outfit to the body of the shirt to keep the arm still without using a formal sling, which is impractical on an infant.
Swaddling can be comforting, but it needs to be done carefully. A loose swaddle that doesn’t press on the fractured collarbone or force the shoulder into an uncomfortable position is best. If the baby seems to be in pain, the pediatrician may recommend infant acetaminophen in appropriate doses. Parents should also pay attention to feeding, since certain holding positions may put pressure on the injury. Experimenting with different nursing or bottle-feeding positions to find what keeps the baby calm and comfortable makes a real difference during those first few weeks.
Follow-Up and Long-Term Outlook
Most pediatricians schedule a follow-up visit two to three weeks after the fracture is identified to check on healing progress. By that point, a visible or palpable lump will likely have formed along the collarbone. That lump is the callus, and while it can look and feel alarming, it’s actually a sign that the bone is healing exactly as it should. The callus gradually shrinks and remodels over the following months until it’s no longer noticeable.
Long-term complications from a newborn clavicle fracture are rare. The overwhelming majority of babies recover full range of motion and strength in the affected arm with no lasting effects. The cases that warrant closer monitoring are those where a brachial plexus injury occurred alongside the fracture, since nerve damage can take longer to resolve and may require physical therapy or, in rare cases, surgical intervention. If a baby’s arm movement hasn’t improved significantly within the first few weeks, or if weakness or asymmetry persists beyond the expected healing window, the pediatrician may refer the family to a specialist for further evaluation.
Was Your Baby’s Broken Collarbone Preventable?
Not every broken collarbone during delivery is the result of a mistake, but not every one is unavoidable either. This section looks at how to tell the difference between a genuinely difficult delivery and a negligent one, and why having the right attorney matters when the answer points toward negligence.
What Separates an Accident from a Mistake
Some deliveries are genuinely difficult, and even when a provider does everything right, the physical realities of the birth canal can produce enough force to fracture a newborn’s clavicle. But there is a clear line between an unavoidable injury and one caused by a provider who used excessive force, ignored known risk factors, or failed to follow established protocols when complications arose.
That line often comes down to decision-making. If a baby was measuring large on ultrasound and the mother had risk factors for shoulder dystocia, was a cesarean section discussed? When the shoulder got stuck, did the provider attempt the McRoberts maneuver and suprapubic pressure before resorting to traction? Or did they simply pull harder? These are the questions that separate a difficult delivery from a negligent one, and the answers live in the medical records, the nursing notes, and the fetal monitoring strips that tracked every minute of the labor.
Why the Right Attorney Makes All the Difference
Joseph Lichtenstein has spent more than 30 years litigating birth injury cases and is one of the country’s foremost experts on brachial plexus injuries, the same nerve damage that frequently accompanies collarbone fractures during shoulder dystocia. Every one of his trials that has gone to verdict over the last four years has resulted in an eight-figure award, and he’s been named New York’s Medical Malpractice Attorney of the Year in 2019, 2023, and 2024. If you believe your baby’s fracture could have been prevented, contact his office for a free consultation to discuss whether your family has grounds for a birth injury lawsuit.