Erb's Palsy From Birth Trauma: Causes, Care, and Legal Options

An infant’s first moments should be filled with relief and joy. When a baby emerges with an arm that hangs limp, no spontaneous movement, and a parent’s touch brings no response, that joy is shattered. Erb’s palsy, a form of brachial plexus injury, turns a birth into a crisis. It leaves families frightened, searching for answers about what went wrong, what healing will look like, and whether anyone is accountable.

This condition does not happen without a cause. It is almost always linked to a delivery complication called shoulder dystocia, where the baby’s shoulder becomes lodged behind the mother’s pelvic bone. The manner in which the medical team responds directly determines whether the nerves are injured. Some injuries heal with dedicated therapy. Others create permanent weakness, limited range of motion, and a lifetime of adaptation. Understanding the medical and legal landscape helps families move from shock to informed action.

Recognizing Erb’s Palsy and Getting the Right Care After Delivery

Erb’s palsy affects the upper trunk of the brachial plexus, the network of nerves running from the spinal cord through the neck and into the arm. The injury typically involves the fifth and sixth cervical nerves (C5–C6), and sometimes C7. These nerves control shoulder abduction, elbow flexion, and forearm rotation. When they are stretched or torn, the child cannot lift the arm, bend the elbow, or bring the hand to the mouth.

A parent might first notice that one arm stays extended and internally rotated while the opposite arm flexes normally. The classic posture is called the “waiter’s tip” position: the shoulder is adducted and rotated inward, the elbow is straight, and the wrist is flexed. Moro reflex testing in the newborn period will be absent on the affected side. Recognizing these signs early is the critical first step in the baby’s care journey.

Shoulder dystocia is the mechanical event most often linked to Erb’s palsy. The condition occurs in roughly 0.7% of vaginal deliveries. Risk factors include maternal diabetes, a large estimated fetal weight, prolonged second stage of labor, and the use of forceps or vacuum extraction. Yet shoulder dystocia also happens in the absence of any warning signs, which is why the standard of care centers on the provider’s technique during the emergency. The law expects clinicians to apply a predictable sequence of maneuvers—such as the McRoberts position, suprapubic pressure, and rotational methods—to gently disengage the shoulder without pulling on the head.

Excessive lateral traction, forceful downward pulling, or panicked twisting can overstretch or tear the brachial plexus nerves. In many cases, the injury reflects a breach of the duty to handle the delivery with reasonable skill. Neuroimaging and intraoperative findings later tell the story: an avulsion injury, where the nerve root is ripped from the spinal cord, is the most severe and permanent form. It is almost never the result of an unavoidable complication.

The first line of practical care is a prompt referral to a specialist familiar with birth-related brachial plexus injuries. A multidisciplinary team may include a pediatric neurologist, an orthopedic surgeon, and a physical therapist. Non-surgical treatment begins as early as the second or third week of life. Gentle range-of-motion exercises prevent joint contractures and maintain passive mobility. Parents play a direct, daily role here, learning routines from a therapist to keep the shoulder, elbow, wrist, and hand supple while awaiting nerve recovery.

Occupational therapy and ongoing functional assessments measure progress. Many infants recover almost completely within the first three to six months if the injury was mild nerve stretching. If no meaningful biceps function returns by three to six months, surgical options are considered. Microsurgical nerve repair, nerve grafting, and nerve transfers can re-route signals from healthy donor nerves to paralyzed muscle groups. Later, secondary surgeries such as tendon transfers, muscle releases, or osteotomies improve function and alignment. A family’s commitment to early, consistent therapy directly shapes the child’s long-term outcome.

When a Birth Injury Becomes a Medical Malpractice Case

Medical providers owe a duty to both mother and baby to meet the recognized standard of care during labor and delivery. That standard is defined by what a reasonably competent obstetrician or midwife would do under similar circumstances. When a clinician ignores risk factors, fails to order a medically indicated Cesarean section, applies excessive force, or skips accepted maneuvers during shoulder dystocia, the resulting nerve injury may give rise to a claim for compensation.

Proving negligence requires four elements. First, a duty existed. Second, the provider breached that duty by acting below the standard of care. Third, the breach directly caused the Erb’s palsy. Fourth, the child suffered measurable harm. In many Erb’s palsy cases, the causation link is remarkably clear: the baby’s nerves were intact before the traction occurred, and the medical record often documents the shoulder dystocia and the maneuvers used. X-rays and MRI scans can rule out other causes and map the extent of damage.

Informed consent also plays a central role. When a mother has known risk factors such as gestational diabetes or a prior delivery complicated by shoulder dystocia, the clinician should discuss the possibility of shoulder dystocia, the associated risks, and the option of a scheduled Cesarean delivery. A failure to have that conversation can deprive the family of the chance to avoid the injury altogether. In those situations, a claim may be built on lack of informed consent as well as substandard delivery technique.

The damages in an Erb’s palsy case extend across a lifetime. A legal claim can seek compensation for medical expenses already incurred and those anticipated in the future: surgeries, therapy, assistive devices, and home modifications. It can also account for lost earning capacity if the arm impairment limits career opportunities, and for the physical pain, emotional suffering, and loss of enjoyment of life that accompany a lifelong disability. In a successful case, these damages are calculated with the help of medical and vocational experts to ensure the settlement or verdict supports the child’s full life horizon.

Families must also contend with strict legal timelines. Every state has statutes of limitation that set a deadline for filing a medical malpractice lawsuit. For birth injuries, many jurisdictions allow an injured child to bring a claim until the age of majority plus an additional period—commonly one to three years after turning eighteen. Some states, however, have shorter repose statutes that require cases to be filed regardless of age. Delaying an investigation risks the loss of critical evidence, fading witness memories, and the possibility that the window closes for good. Reaching out for a legal evaluation soon after the injury is the surest way to protect a child’s rights.

• Obtain complete medical records. Request the mother’s prenatal and labor records, the baby’s delivery and newborn records, all imaging studies, and any neonatal consultation notes. These documents form the foundation of any legal review.
• Document the child’s treatment and development. Keep a journal of therapy appointments, surgical procedures, and functional milestones. Photographs and video of the child’s movement limitations can be powerful evidence.
• Avoid giving recorded statements to hospital representatives. Insurance adjusters and risk managers may reach out with sympathetic tones. What a parent says can be used later to minimize the claim.
• Seek a legal consultation with a birth injury firm. An attorney who focuses on birth trauma and brachial plexus cases can review the records at no upfront cost and help the family understand whether they have a viable claim.

Frequently Asked Questions

Q: How can a family tell the difference between a birth injury that required immediate action and true medical negligence?
Shoulder dystocia is an emergency, and providers must act quickly. Negligence is not about whether they tried to help—it is about whether they used excessive force, skipped standard maneuvers, or ignored clear warning signs. An attorney reviews the fetal heart monitor strips, the delivery notes, and the mother’s history to determine if the standard of care was broken.

Q: What if the baby’s arm seems to be getting better without surgery—is a legal case still worth pursuing?
Yes. Even partial recovery can leave lasting deficits, weakness, or contractures that require years of therapy. A claim can cover the full cost of care, including future interventions, and account for the child’s pain and functional limitations. The legal system values the injury that occurred, not just the final disability.

Q: How long does a family have to bring a claim for Erb’s palsy?
Statutes of limitation vary by state. Many states extend the deadline for a child injured at birth until the age of majority plus a set number of years. However, evidence weakens over time. Consulting a lawyer early preserves the child’s right to seek compensation before memories fade and records are harder to locate.

Q: How do families pay for a birth injury lawsuit when they are already overwhelmed with medical bills?
Almost all experienced birth injury attorneys handle cases on a contingency fee basis. That means the family pays no retainer and no hourly fees. The attorney is only paid if the case results in a settlement or verdict, taking a percentage of the recovery. This removes the financial risk of seeking accountability.

If you or a family member is dealing with an injury you suspect was caused by negligence, request a free, confidential case review through this site. A quick review can tell you where you stand and what your options are.