What is shoulder dystocia?
Shoulder dystocia is an obstetric emergency in which, after a baby’s head has delivered, one shoulder becomes lodged behind the mother’s pubic bone and the body cannot be delivered with normal gentle effort. It complicates roughly 0.5% to 1% of vaginal deliveries. The danger is twofold and time-sensitive: the lodged baby’s umbilical cord may be compressed, cutting off oxygen, while the instinctive response (pulling harder on the head) is exactly what injures the brachial plexus nerves. Shoulder dystocia is therefore the delivery complication that sits at the root of a whole cluster of birth injuries.
What separates a good outcome from a harmful one is usually the delivery team’s response in the seconds and minutes that follow, since the dystocia itself is often unpredictable and unpreventable. That response is a defined, teachable sequence, which is what makes deviations from it legally significant.
Risk factors
Many cases occur without any warning, but recognized risk factors raise the probability and are supposed to shape delivery planning:
- Fetal macrosomia: a large baby is the single most-cited risk factor.
- Maternal gestational diabetes produces broad-shouldered babies and independently raises risk.
- Maternal obesity and excessive pregnancy weight gain.
- A prior shoulder dystocia: recurrence risk is substantial.
- Post-term pregnancy and a prolonged second stage of labor.
- Operative vaginal delivery (forceps or vacuum).
None of these predicts dystocia reliably, which is why the emphasis of the standard of care is on preparation and response rather than perfect prediction.
The HELPERR protocol
Professional bodies teach a structured, ordered response to shoulder dystocia, commonly remembered by the mnemonic HELPERR. The sequence is designed to free the shoulder without excessive traction on the head.
| Step | Maneuver | Purpose |
|---|---|---|
| H | Call for Help | Summon additional staff, anesthesia, and neonatal support immediately. |
| E | Evaluate for episiotomy | Consider more room for internal maneuvers (does not relieve the bony obstruction itself). |
| L | Legs (McRoberts maneuver) | Sharply flex the mother’s thighs onto the abdomen to rotate the pelvis and free the shoulder. |
| P | Suprapubic Pressure | Downward/lateral pressure just above the pubic bone to dislodge the shoulder. |
| E | Enter (internal rotation) | Rotational maneuvers (Rubin, Woods screw) to turn the shoulder out of its stuck position. |
| R | Remove the posterior arm | Deliver the trailing arm to reduce the shoulder width. |
| R | Roll (Gaskin maneuver) | Move the mother onto all fours to change pelvic dimensions. |
McRoberts positioning with suprapubic pressure resolves a large share of cases. Crucially, at no point does the protocol call for forceful downward traction on the head; that is the maneuver the sequence exists to avoid.
Injuries shoulder dystocia can cause
- Erb’s palsy and other brachial plexus injuries: from stretching the nerves, the signature injury of mishandled dystocia.
- Clavicle and humerus fractures: sometimes caused deliberately to free the shoulder, sometimes a marker of force.
- Hypoxic brain injury (HIE): if the cord is compressed and delivery is delayed, oxygen deprivation can injure the brain.
- Perinatal death in the most severe, prolonged cases.
Maternal injuries (severe tearing, hemorrhage) can occur as well.
When management is negligent
Because shoulder dystocia itself is often unavoidable, the legal question focuses on the response. Signs that management may have fallen below the standard of care include:
- Excessive or panicked downward traction on the head instead of the ordered maneuvers, the leading cause of preventable brachial plexus injury.
- Failure to call for help or to escalate promptly.
- Skipping recognized maneuvers or applying them incorrectly.
- Ignoring documented risk factors (macrosomia with diabetes, a prior dystocia) in delivery planning, including whether a cesarean should have been discussed.
- Fundal pressure (pushing on the top of the uterus), which is contraindicated and worsens impaction.
- Poor or absent documentation of the timeline and maneuvers used.
Do the delivery notes show which maneuvers were used — or just that the doctor “pulled”? How a shoulder dystocia was managed is written in the records, and a free review can tell you whether the response met the standard of care.
Was it preventable?
Not every shoulder dystocia injury is malpractice. The emergency is frequently unpredictable, and even flawless management can occasionally end in a nerve injury when the impaction is severe. The standard of care does not demand a perfect outcome; it demands a correct response: calling for help, performing the recognized maneuvers in sequence, and avoiding excessive traction and fundal pressure. When the records show that force replaced technique, or that obvious risk factors were ignored in planning, the resulting injury may well have been preventable.
Legal options for families
A shoulder dystocia claim examines whether the delivery team’s response met the standard of care and whether a failure caused the child’s injury. These cases are won and lost in the delivery records: the documented timeline, the maneuvers performed, the traction described, and the risk factors known before labor. Compensation can fund lifetime therapy, surgery, and care for a brachial plexus injury or hypoxic brain injury, quantified in a life-care plan and reflected in published brachial plexus settlements, though prior results never guarantee an outcome. Filing deadlines vary by state; see our statute of limitations guide.
Where your case is handled depends on where the birth occurred: Banville Law attorneys are licensed in New York and Washington, D.C.; The Weitz Firm attorneys are licensed in Pennsylvania and New Jersey; elsewhere, the alliance connects families with its vetted network of local birth injury attorneys.
Frequently asked questions
Is shoulder dystocia the doctor’s fault?
The emergency itself usually is not; dystocia is often unpredictable and unpreventable. What can be negligent is the response: using excessive traction instead of the recognized maneuvers, failing to call for help, or ignoring clear risk factors in delivery planning.
What is the McRoberts maneuver?
It is the first-line physical maneuver for shoulder dystocia: the mother’s thighs are sharply flexed up onto her abdomen, which rotates the pelvis and frees the impacted shoulder in a large share of cases, especially when combined with suprapubic pressure.
Can shoulder dystocia be predicted or prevented?
Not reliably. Risk factors like a large baby and gestational diabetes raise the odds, but most cases occur without warning. This is why the standard of care emphasizes a correct, practiced response rather than perfect prediction, though in high-risk cases a cesarean discussion may be warranted.
What injuries does shoulder dystocia cause?
Most commonly brachial plexus injuries such as Erb’s palsy, along with clavicle or arm fractures. If delivery is delayed and the cord is compressed, oxygen deprivation can cause hypoxic brain injury (HIE).
Sources
- American College of Obstetricians and Gynecologists (ACOG). Practice Bulletin: Shoulder Dystocia.
- Gherman RB, et al. Shoulder dystocia: the unpreventable obstetric emergency. American Journal of Obstetrics & Gynecology.
- American Academy of Family Physicians (AAFP). Advanced Life Support in Obstetrics (ALSO): HELPERR mnemonic.
- National Institute of Neurological Disorders and Stroke (NINDS). Brachial Plexus Injuries Information.
This page is for general education and is not medical advice. Medical facts above are drawn from the cited primary sources; legal statements reflect the reviewing attorneys’ professional experience. Always consult your child’s physician about medical concerns.