What is Erb's Palsy?
Erb’s Palsy, also known as Erb-Duchenne Palsy, is a neurological condition caused by injury to the upper brachial plexus nerves (C5 and C6), which control movement and sensation in the shoulder, upper arm, and elbow. The injury commonly occurs during childbirth due to excessive stretching of the baby’s neck and shoulder, although it can also result from trauma in adults.
The condition leads to weakness or paralysis of the affected arm, making it difficult to lift the shoulder, bend the elbow, or perform normal arm movements. The severity ranges from temporary nerve stretching to complete nerve rupture.
At Physiotherapy Expert, we manage Erb’s Palsy through early physiotherapy, neurodevelopmental rehabilitation, muscle strengthening, joint mobility exercises, and functional training to maximize recovery, improve arm function, and prevent long-term complications.
Understanding the Condition
Erb’s Palsy occurs when the upper portion of the brachial plexus is damaged, disrupting nerve signals between the spinal cord and the muscles of the shoulder and arm.
- Shoulder muscles
- Upper arm muscles
- Sensation along the outer arm
It is commonly associated with stretching, compression, or tearing of the C5 and C6 nerve roots during birth or traumatic injury.
Infants with Erb’s Palsy often hold the affected arm in a characteristic “waiter’s tip” position, while adults may experience weakness, numbness, and reduced shoulder function following trauma.
Types of Erb's Palsy
Erb’s Palsy can present in different forms:
Neuropraxia
- Mild stretching of the nerve
- Excellent recovery potential
- Most common type
Neuroma
- Scar tissue develops around the injured nerve
- Partial nerve recovery
- May require prolonged rehabilitation
Nerve Rupture
- Nerve is torn but not detached from the spinal cord
- Often requires surgical repair
Nerve Avulsion
- Nerve is completely pulled away from the spinal cord
- Most severe form
- Surgical reconstruction may be necessary
Understanding Severity and Functional Impact
Severity depends on the extent of nerve damage.
- Mild: Temporary weakness with near-complete recovery over weeks to months.
- Moderate: Partial loss of shoulder and elbow movement requiring prolonged physiotherapy.
- Severe: Complete paralysis of the affected muscles with significant functional limitations and possible need for surgery.
Early intervention greatly improves the chances of functional recovery.
Common Causes of Erb's Palsy
Erb’s Palsy occurs when excessive force stretches or damages the brachial plexus nerves.
– Difficult or prolonged delivery
– Shoulder dystocia
– Breech delivery
– Road traffic accidents
– Falls
– Sports injuries
– Sudden traction on the neck and shoulder
– Heavy impact injuries
– Rare nerve injury during surgery
– Trauma associated with medical procedures
Symptoms: Recognizing the Signs
Symptoms vary depending on the severity of nerve injury.
In Infants
- Decreased spontaneous arm movement
- Arm held in a "waiter's tip" position
- Weak or limp arm
In Children
- Difficulty lifting the arm
- Delayed motor development
- Limited shoulder and elbow movement
In Adults
- Shoulder weakness
- Difficulty bending the elbow
- Reduced arm function after trauma
Associated Signs
- Muscle weakness
- Reduced muscle bulk over time
Diagnosis: Clinical Approach
At Physiotherapy Expert, diagnosis involves a comprehensive assessment:
- Clinical Examination: Assessment of muscle strength, joint movement, reflexes, and nerve function.
- Neurological Assessment: Evaluation of sensation, motor control, and functional ability.
- Imaging Studies: Ultrasound, MRI, or X-rays may be performed to assess associated injuries.
- Electrodiagnostic Testing: Nerve conduction studies and electromyography (EMG) help determine the severity of nerve damage.
Early diagnosis is essential for optimal recovery and treatment planning.
Therapy & Management: 12-Week Structured Program
Management focuses on maintaining joint mobility, improving muscle strength, restoring functional movement, and preventing deformities.
Phase 1: Protection & Early Mobility (Weeks 1–4)
Goals: Protect the affected limb, maintain joint flexibility, and stimulate muscle activity.
Interventions:
- Gentle passive range-of-motion exercises
- Positioning techniques
- Parent or caregiver education
Phase 2: Muscle Activation & Strengthening (Weeks 4–8)
Goals: Improve muscle activation and encourage active arm movement.
Key interventions:
- Active-assisted exercises
- Shoulder and elbow strengthening
- Functional reaching activities
Phase 3: Functional Recovery & Skill Development (Weeks 8–12)
Goals: Improve coordination, strength, and independence in daily activities.
Training includes:
- Functional task training
- Fine motor skill development
- Balance and coordination exercises
Advanced Therapy Techniques
- Neurodevelopmental therapy
- Electrical muscle stimulation (when appropriate)
- Functional movement training
- Constraint-induced movement therapy
Potential Complications
If not managed appropriately, Erb’s Palsy may lead to:
- Permanent muscle weakness
- Limb length differences
- Reduced arm function
- Delayed motor development
FREQUENTLY ASKED QUESTIONS
Many infants with mild Erb’s Palsy recover significantly within the first few months. More severe nerve injuries may require surgery and long-term rehabilitation.
Surgery may be considered if there is little or no improvement in arm function after several months or if imaging shows severe nerve injury.
Physiotherapy plays a vital role in maintaining joint mobility, strengthening muscles, preventing contractures, and promoting normal arm function throughout recovery.
Recovery depends on the severity of the nerve injury. Mild cases may recover within 3–6 months, while severe cases may require rehabilitation for a year or longer.
RELATED CONDITIONS
- Brachial Plexus Injury
- Klumpke's Palsy
- Birth Trauma
