A broken collarbone, medically known as a clavicle fracture, is the most common bone fracture associated with childbirth. It occurs when pressure or mechanical forces cause the slender bone connecting the breastbone to the shoulder to crack or break. Most newborns recover fully without surgery, but associated nerve injuries require careful assessment.
Understanding a newborn clavicle fracture
The clavicle supports the shoulder and connects the upper limb to the chest.
During delivery, the baby's shoulders must pass through the maternal pelvis.
Pressure on the shoulder region can occasionally cause the clavicle to fracture.
Newborn bones are relatively flexible and have an excellent ability to heal.
For this reason, an uncomplicated fracture usually has a favorable outcome.
However, the collarbone lies close to important nerves that control movement and sensation in the arm.
A baby with a fractured clavicle and persistent arm weakness may have more than a bone injury.
What causes a broken collarbone during birth?
Several delivery circumstances can increase the likelihood of a clavicle fracture.
One important association is shoulder dystocia, which occurs when a baby's shoulder becomes stuck after the head has delivered.
A larger baby may also experience difficulty passing through the birth canal.
Other contributing circumstances include challenging fetal positioning, difficult vaginal delivery, and some instrument-assisted births.
Forceps and vacuum extraction can be appropriate medical procedures, but they may be associated with birth trauma.
A clavicle fracture can also occur during an otherwise uncomplicated delivery.
The injury alone does not prove that excessive force or medical negligence occurred.
Signs and symptoms parents may notice
Some newborns show obvious discomfort when the affected shoulder is moved.
A baby may cry during dressing, lifting, or repositioning.
Other infants hold one arm close to the body and move it less frequently.
Swelling or tenderness may appear over the collarbone.
A clinician may detect crepitus, a crackling sensation near the fracture.
The Moro reflex, commonly called the startle reflex, may be reduced on the affected side.
Some fractures cause few symptoms and are discovered later when a healing lump develops.
How doctors diagnose the injury
Healthcare professionals examine the baby's collarbone, shoulders, and arm movements.
They may identify tenderness, swelling, or an unusual contour.
An X-ray can confirm the fracture when imaging is needed.
Doctors should also evaluate arm strength and movement.
This is important because a painful fracture can cause temporary guarding, while a brachial plexus injury can cause neurological weakness.
The two conditions may occur together.
Treatment and healing
Most newborn clavicle fractures do not require surgery or casting.
Treatment focuses on comfort and gentle handling.
A healthcare professional may recommend temporarily limiting movement of the affected arm.
The family should follow specific instructions for lifting, dressing, and positioning the baby.
A firm healing bump may develop over the collarbone after one to three weeks.
This bump is called a callus and is usually a normal part of bone repair.
Clinical healing commonly occurs within three to six weeks.
The bone continues remodeling afterward.
When additional care is necessary
Parents should seek medical assessment if their baby does not move one arm normally.
Persistent weakness, abnormal hand movement, or other neurological symptoms may suggest a nerve injury.
A fracture that appears to heal while arm function remains abnormal requires follow-up.
Early recognition can help children receive appropriate specialist care.
Common questions around newborn collarbone fractures
Will a baby's broken collarbone heal completely?
Most uncomplicated newborn clavicle fractures heal fully without permanent problems.
Does a newborn need surgery for a broken collarbone?
Surgery is rarely necessary.
Can a broken collarbone cause permanent arm weakness?
The fracture itself usually heals well, but an associated brachial plexus injury may cause lasting weakness.
