Shoulder Dystocia and Erb's Palsy in Brooklyn Deliveries: How Families Beat the Hospital's 'Maternal Forces of Labor' Defense
Updated: 2 days ago
You delivered your baby at Maimonides in Borough Park, NewYork-Presbyterian Brooklyn Methodist in Park Slope, or Kings County Hospital in East Flatbush. The head came out, and then everything stopped. Nurses climbed onto the bed, someone pressed hard on your abdomen, and the doctor pulled. When your baby finally arrived, one little arm hung limp. That's the classic story behind shoulder dystocia and Erb's palsy — and when you asked the hospital what happened, you likely heard a rehearsed answer: nobody pulled too hard, and the injury was caused by the "natural maternal forces of labor." This article explains what that defense really is, why hospitals lean on it, and how Brooklyn families can dismantle it.
What Happens During Shoulder Dystocia, and How Does It Cause Erb's Palsy?
Shoulder dystocia is an obstetric emergency that happens when, after the baby's head delivers, the front shoulder gets stuck behind the mother's pubic bone. The clock starts immediately. The baby can't breathe on its own yet, and the umbilical cord may be compressed, so the delivery team has only minutes to free the shoulder safely.
The danger sits in a bundle of nerves called the brachial plexus. These are the nerve roots that exit the spinal cord at the neck and control the shoulder, arm, and hand. When a doctor pulls down and sideways on the baby's head while the shoulder is still wedged against bone, those nerves stretch like overtaxed rubber bands. Erb's palsy is the injury pattern that results when the upper nerve roots are damaged — a weak or paralyzed shoulder and arm, often with the hand turned inward in what doctors call the "waiter's tip" position.
Not every brachial plexus injury is the same. These injuries range from a mild stretch that heals on its own, to a rupture where the nerve tears apart, to an avulsion — the most severe form — where the nerve root is ripped completely out of the spinal cord. Avulsions and ruptures don't heal by themselves. They require surgical nerve grafting, and even with surgery the child rarely regains full use of the arm. The National Institute of Neurological Disorders and Stroke explains that severe brachial plexus injuries can cause permanent weakness, loss of sensation, and chronic pain.
Here's what matters legally: shoulder dystocia itself is not malpractice. It's a recognized complication, and with millions of births in the United States each year, delivery teams see it regularly and train for it. The standard of care requires the doctor to stop pulling and use specific maneuvers instead:
The McRoberts maneuver — sharply flexing the mother's legs toward her chest to rotate the pelvis and free the shoulder
Suprapubic pressure — a nurse pressing above the pubic bone to dislodge the stuck shoulder
Rotational maneuvers that turn the baby's shoulders to a wider part of the pelvis
Delivering the posterior arm first to create room
What the standard of care forbids is exactly what many injured babies experience: strong, sustained downward traction on the head while the shoulder is still trapped. That's the negligence at the center of most shoulder dystocia and Erb's palsy lawsuits.
What Is the "Maternal Forces of Labor" Defense, and Why Do Brooklyn Hospitals Use It?
The "maternal forces of labor" defense is the hospital's argument that the mother's own contractions and pushing — not the doctor's hands — stretched the baby's nerves before the physician ever touched the child. In other words, the defense says the injury was unavoidable and no one is to blame. Over the past two decades, this theory has become the go-to defense in nearly every brachial plexus birth injury case in New York, because it lets the hospital admit the injury happened while denying that anyone caused it.
The theory isn't pure invention. In some deliveries, natural forces genuinely can injure the brachial plexus — most notably when the injured arm was the posterior arm, the one resting against the mother's sacrum rather than the one jammed against the pubic bone. Those injuries also tend to be milder stretch injuries that resolve within weeks or months.
The problem is that hospitals now stretch the theory to cover fact patterns it doesn't fit. A permanent rupture or avulsion of the nerves on the anterior shoulder — the one that was stuck — following a documented shoulder dystocia with documented traction is precisely the injury pattern that points to clinician force, not contractions. Experienced lawyers watch for the delivery note that records which shoulder was anterior, because a permanent injury to the arm that was wedged behind the pubic bone is the pattern the maternal-forces theory struggles to explain — and charting errors or later "addendums" to that note can be more revealing than the note itself.
New York courts have also grown skeptical of maternal-forces experts who offer the same generic opinion in every case regardless of the facts. Under New York's Frye standard — the rule that expert testimony must rest on methods generally accepted in the scientific community — your lawyer can challenge whether the defense expert's opinion is actually grounded in this delivery's records or is just a stock theory recycled from case to case. We've covered how expert-driven medical malpractice proof works in our guide to catastrophic hospital errors in NYC.
How Do You Prove Excessive Traction Caused Your Child's Brachial Plexus Injury?
You prove excessive traction the same way you prove any New York medical malpractice claim: by showing the doctor departed from accepted medical practice and that the departure caused the injury — and in these cases, the proof is built from the hospital's own records plus the medicine itself. A "departure" simply means the doctor did something a reasonably careful obstetrician wouldn't have done, or failed to do something a careful one would have.
The delivery record is the starting point. Your lawyer will scrutinize the doctor's delivery note for which maneuvers were performed and in what order, how long the dystocia lasted, and — critically — what the note does not say. A note that documents "gentle downward traction" followed by a baby with a completely avulsed nerve root creates a credibility problem for the defense, because avulsions require substantial force. The nursing notes often tell a different story than the physician's note, with timestamps showing how quickly the team escalated and who was in the room.
The prenatal chart matters just as much. Shoulder dystocia has well-known risk factors: a large baby (macrosomia), gestational diabetes, a prior dystocia, and a prolonged pushing stage. If your chart showed a suspected nine-and-a-half-pound baby and poorly controlled gestational diabetes, and no one ever discussed a planned C-section with you, that's a second, independent departure — a failure to prevent the emergency in the first place.
Then comes the medicine that hospitals can't chart away. Later EMG testing (a study of electrical activity in nerves and muscles) and MRI imaging can distinguish a stretch injury from a rupture or avulsion. If your child undergoes nerve graft surgery, the operating surgeon sees the damage directly, and those operative findings become powerful trial evidence. In some scenarios, the injury itself does much of the talking — a concept we've explored in our post on when the injury speaks for itself in New York malpractice cases.
One procedural requirement you should know about: under CPLR § 3012-a, your attorney must file a certificate of merit declaring that they consulted with a physician and concluded there's a reasonable basis for the malpractice claim. That's why birth injury firms have the records reviewed by an obstetrician before filing — the case is vetted by a doctor from day one.
What Deadlines and Filing Requirements Apply to a Brooklyn Birth Injury Lawsuit?
The core deadline comes from CPLR § 214-a, which generally requires medical malpractice actions to be filed within 2 years and 6 months of the negligent act or omission. Because the injured patient is a child, CPLR § 208 pauses that clock during infancy — but for medical malpractice specifically, the same section caps the extension at 10 years from the date of the malpractice. So a Brooklyn child injured at birth generally must sue by his or her tenth birthday, not the eighteenth.
The trap that catches families is the public hospital rule. If your baby was delivered at Kings County Hospital, Woodhull, or South Brooklyn Health — all run by NYC Health + Hospitals — you're suing a public entity, and General Municipal Law § 50-e requires serving a notice of claim within 90 days after the claim arises. Courts can excuse a late notice for an infant, but that relief is discretionary, not automatic. Most families miss that the identity of the hospital — public versus private — changes their deadlines more dramatically than any other single fact in the case, a dynamic we've written about in the context of suing a public hospital versus a private one. Public-hospital claims also carry a much shorter overall filing deadline than the standard malpractice period.
The key dates to keep in mind:
90 days — notice of claim deadline for NYC Health + Hospitals facilities like Kings County, Woodhull, and South Brooklyn Health
2 years and 6 months — the general malpractice limitations period under CPLR § 214-a
10 years — the outer limit on the infancy extension for malpractice claims under CPLR § 208
A private-hospital case would typically be filed in Kings County Supreme Court at 360 Adams Street in Downtown Brooklyn. Brooklyn juries have historically been receptive to birth injury cases, and per the NYC Comptroller's annual claims report, medical malpractice claims against the City's public hospital system are consistently among the costliest categories of payouts the City makes each year.
What Compensation Can a Child With Permanent Erb's Palsy Recover in New York?
A child with a permanent brachial plexus injury can recover the full lifetime cost of the injury: every future surgery, years of therapy, pain and suffering, and the earnings the child will lose over an entire working life. That last category is where shoulder dystocia and Erb's palsy cases become seven-figure cases, because the plaintiff is measured in decades, not years.
Start with the surgeries. A child with a rupture or avulsion typically needs primary nerve graft or nerve transfer surgery in the first year of life, often followed by secondary procedures — tendon transfers, muscle releases, shoulder reconstruction — as the child grows and the imbalanced muscles pull the shoulder joint out of alignment. Each operation means anesthesia, hospitalization, casting or splinting, and months of occupational therapy. A credible life-care plan prices all of it out to age of life expectancy, and those plans alone routinely run into the millions.
Then comes lost earning capacity. A jury is allowed to compensate a child for the difference between what they could have earned with two functional arms and what they can realistically earn with one. Economists build that projection from government wage data on earnings for full-time workers, and projecting even a partial impairment of that earning power across a 40-plus-year work life produces a very large number. Add non-economic damages — a lifetime of being unable to lift, carry, throw, or dress without difficulty — and you can see why New York verdicts in these cases are substantial. We've broken down actual numbers in our posts on what an Erb's palsy case is worth in New York and in our review of recent New York birth injury verdicts.
Because the plaintiff is a minor, any settlement must be approved by the court through an infant compromise proceeding, and the money is typically protected — placed in guarded accounts or a structured settlement that pays out as your child grows. You don't have to worry that a settlement will be mishandled; the court supervises it. For a deeper look at how these values are built, see our analysis of 2026 Erb's palsy settlement values
Frequently Asked Questions
The hospital says my baby's injury happened before the doctor even touched her. How can they know that?
They usually can't — it's an expert opinion, not an observed fact. The maternal-forces theory best fits mild, temporary injuries to the posterior arm, so if your child has a permanent rupture or avulsion on the shoulder that was stuck behind the pubic bone, that pattern points toward traction. Your lawyer can challenge whether the defense expert's opinion is genuinely based on your delivery records.
My baby's arm has improved some with therapy. Do we still have a case?
Possibly, yes. Many children regain partial function but are left with permanent weakness, limited range of motion, or a shoulder that develops abnormally as they grow. A pediatric brachial plexus specialist can assess whether the residual impairment is permanent, which is what drives the value of the claim.
How much does it cost to hire a birth injury lawyer in New York?
Nothing up front. Birth injury cases are handled on a contingency fee, meaning the firm advances the costs of experts and litigation and is paid only as a percentage of a settlement or verdict. If there's no recovery, you owe no fee.
How long do we have to file if my child was born at a private Brooklyn hospital?
Because of the infancy toll, a malpractice claim for a child can generally be brought up to 10 years from the date of the malpractice — but waiting is risky because records get lost and witnesses scatter. If the delivery happened at a public hospital like Kings County or Woodhull, a notice of claim may be required within 90 days, so speak to a lawyer as soon as possible.
The Bottom Line for Brooklyn Families
The "maternal forces of labor" defense is a theory, not a shield — and in cases involving a permanent injury to the stuck anterior shoulder after documented traction, it's a theory the facts often refute. With the delivery records, the prenatal chart, and the right medical experts, families can prove excessive traction and recover the lifetime damages their child will need.
If your child suffered a brachial plexus injury or Erb's palsy after a difficult delivery at a Brooklyn hospital, the team at Yassi Law PC is ready to help. Call us today at 646-992-2138 for a consultation.
Written by Reza Yassi
This article is for informational purposes only and does not constitute legal advice. Although I am an attorney, I am not your attorney, and reading this article does not create an attorney-client relationship. Laws vary by jurisdiction and may have changed since the publication of this article. For advice specific to your situation, consult a qualified attorney.
.png)