Total brachial plexus palsy

How does this happen?

The mechanism is the same stretching that causes the other patterns, applied with enough force, or in a direction, that all five roots are involved. ¹

Because the whole bundle is affected, the arm is flail: it hangs completely, with no movement at any joint, and often with reduced sensation throughout.

Two additional structures are frequently involved and both should be checked.

The nerve to the diaphragm arises from the same region of the neck. If it is injured, one side of the diaphragm does not work and breathing is affected. This can be subtle and it is checked with imaging.

The sympathetic fibers at T1, producing Horner syndrome. Its presence suggests root-level injury and therefore avulsion. ¹

Root avulsion is the central problem in total palsy. A root torn from the spinal cord cannot be reattached. What can be done is nerve transfer: taking a working nerve that supplies something less critical and rerouting it to power an important muscle. That is why these children are managed surgically and why the surgical planning is complex. ²

What causes it?

Two different questions get mixed together here. The first is what leads to this injury in the body. The second is whether anyone could have prevented it. They are not the same question, and the answer to the first does not settle the second.

Happens even with perfect care

• shoulder dystocia managed correctly. The maneuvers used to free a stuck shoulder are forceful, and injury can occur despite correct technique. Guidance states this directly. ³
• Births with no shoulder dystocia recorded, and cesarean births, in which these injuries also occur. ³
• A large baby, where ultrasound weight estimates carry substantial error and cannot reliably predict who is at risk. ⁴
• Maternal diabetes, which changes how weight is distributed on the baby. ⁵
• breech birth or a very fast second stage. ⁶

Associated with gaps in care

These are situations where published standards say what the care team should watch for and do. A gap here does not prove anyone caused your child's injury. It points to where the medical records will have an answer.

• A shoulder dystocia managed outside the recognized sequence, which begins with the McRoberts maneuver and suprapubic pressure. Fundal pressure is specifically discouraged. ³
• Excessive or wrongly directed traction on the head. ³
• Risk factors not considered, including when cesarean may be offered for suspected macrosomia. ⁴
• Gestational diabetes not screened for or not managed. ⁵
• The event not documented with the maneuvers used, in order, with times.
• The injury not recognized before discharge. ⁷
• Specialist referral delayed past the surgical window. ²

Whether any of this amounts to a departure from the standard of care takes a physician expert reading the whole record. These injuries occur after correctly managed births, and guidance says so plainly. ³

What are the signs, by age?

Signs change as a child grows. A newborn cannot show you a walking problem. Some children look fine at first and show differences months later.

At birth and the first hours

• An arm that hangs completely still, with no movement at shoulder, elbow, wrist or hand.
• Absent startle response on that side.
• Horner syndrome: droopy eyelid and smaller pupil.
• Breathing difficulty, if the diaphragm nerve is involved. This needs urgent assessment.
• Often a broken clavicle on the same side.

The first week

• No movement returning.
• Reduced or absent sensation throughout the arm.
• Confirmation of diaphragm involvement on imaging, if suspected.

Around 3 months

• Little or no return of function, in most children.
• Surgical planning is usually underway by now. ²
• Stiffness developing at every joint if range of motion is not being done.

Around 6 months

• Function largely determined by whether and what surgery has been done.
• Muscle wasting becomes visible.
• Growth difference between the two arms is already apparent.

Around 12 months

• Emerging function after successful nerve surgery, usually starting at the elbow.
• The arm being ignored, which is why encouraging use is part of therapy.

Toddler years

• A noticeable arm length and size difference.
• Function that depends on what was restored surgically.
• Reduced sensation, which is a safety issue.
• Adaptation, which children do quickly and well.

School age

• One-handed function for most tasks, with the affected arm as a helper.
• Adaptive equipment.
• Further reconstructive surgery is often considered in this period.
• Social awareness of the difference.

How is it diagnosed?

Serial examination by a specialist team. Every joint is assessed separately. In total palsy the question is less whether recovery is happening and more which roots, if any, retain any connection. ²

MRI of the brachial plexus, which is central here, to identify which roots are avulsed and which may be graftable.

Chest imaging to check diaphragm function, which is often assessed with ultrasound or fluoroscopy so the diaphragm can be watched moving.

Look for Horner syndrome. Its presence points to T1 root avulsion. ¹

Electrical studies in some centers, to assess which muscles retain any nerve supply.

Referral should be immediate. This is not a pattern to observe in a general clinic. ²

What is the treatment?

Range of motion from day one, at every joint. In total palsy, contractures develop fast because nothing is moving, and a stiff joint cannot be fixed by a nerve. ²

Surgery, usually. Nerve reconstruction is the mainstay. Because roots are often avulsed, the approach is typically nerve transfer, moving a working nerve to power a priority muscle. Surgeons work to a hierarchy of function, generally restoring elbow bending and shoulder stability first, then hand function. ²

The reason for the hierarchy is that there is a limited supply of donor nerves, so choices have to be made. Ask your surgeon what the priorities are for your child and why.

Therapy, intensively and for years. occupational therapy and physical therapy, and referral to early intervention for a child under 3 at no cost to the family. ⁸

Sensory protection, because an insensate arm gets injured without the child noticing.

Later reconstructive surgery, including tendon transfers, muscle transfers and bone procedures, often over several operations through childhood.

Equipment and adaptation, which is where a great deal of practical function comes from.

What is the long-term outlook?

Total brachial plexus palsy carries the least favorable outlook of the brachial plexus injuries. Full recovery of a flail arm is not the expected result. ²

What modern nerve transfer surgery has changed is what is achievable. Restoring elbow bending, shoulder stability and some hand function is realistic in many children, and that transforms daily life even when the arm never works normally.

Sensation usually remains reduced.

An arm that is not used grows less, so a size and length difference is expected.

Children adapt extremely well and become highly functional one-handed with the affected arm as a helper. That is a genuine and good outcome, and it is worth saying to families early, because the first conversation about a flail arm is frightening and the long-term picture is usually better than it sounds.

What does daily life look like?

Range of motion every day. Surgery and recovery periods. Years of therapy.

Practical adaptation is where most function comes from: one-handed techniques, adaptive tools, and letting a child find their own method.

Arm protection matters because of reduced sensation.

At school, everything two-handed needs a plan, and it belongs in the written education plan rather than being improvised each year. ⁹

Families often describe the hardest part as the gap between how serious it looks and how well their child manages. Both are true.

What does care cost over a lifetime?

No agency publishes a lifetime cost for total brachial plexus palsy, and this site does not invent one.

Cost is driven by multiple surgeries, years of therapy, adaptive equipment and, in some children, lasting functional limitation.

If a legal case is filed, the relevant figure is a life care plan written for your child rather than any population estimate.

What can you do this week?

1. Get a specialist brachial plexus referral now. Not at 3 months. Now.
2. Ask whether the diaphragm is working, and whether imaging has been done.
3. Ask whether Horner syndrome is present.
4. Start range of motion today, taught by a therapist, at every joint.
5. Ask when an MRI will be done and what it is looking for.
6. Request the complete delivery records with the records request builder.
7. Ask what the surgical plan and priorities are, and write the answer down.

What should you ask each specialist?

Take these with you. Write the answers down in the moment, because you will not remember them later.

For the specialist surgeon

• Which roots do you think are avulsed, and which may be graftable?
• What is the surgical plan, and in what order will you restore function?
• What function do you expect to restore, and what will not come back?
• What is the timing, and what happens if we wait?
• How many operations should we expect over childhood?

For the neonatologist

• Is the diaphragm working on both sides?
• Is Horner syndrome present?
• Was the collarbone X-rayed?

For the therapy team

• Show me range of motion at every joint and watch me do it.
• How do we keep the joints from stiffening before surgery?
• How do we protect an arm that cannot feel?

You can also build a printable list with the question generator.