What Is a Brachial Plexus Injury? Types and Causes
Expert brachial plexus injury treatment by Dr. Madhusudhan NC at Madhu Hand Surgery. Advanced diagnosis, nerve repair, and rehabilitation for better recovery.
A brachial plexus injury is one of the most complex nerve injuries affecting the upper limb. The brachial plexus is a network of nerves that originates from the neck and controls movement and sensation in the shoulder, arm, forearm, and hand. When these nerves are stretched, compressed, torn, or pulled away from the spinal cord, a brachial plexus injury occurs.
These injuries can range from mild temporary weakness to complete paralysis of the arm. Early diagnosis and timely treatment are critical because nerve recovery is highly time-sensitive. As a surgeon with a special interest in brachial plexus reconstruction and upper limb function restoration, Dr. Madhusudhan N.C. frequently emphasizes that successful treatment is not just about repairing nerves but restoring meaningful function that improves a person’s daily life.
What Is the Brachial Plexus?
The brachial plexus is formed by five nerve roots arising from the spinal cord:
- C5
- C6
- C7
- C8
- T1
These nerves combine and branch into the major nerves that control:
✔ Shoulder movement
✔ Elbow flexion and extension
✔ Wrist movement
✔ Finger movement
✔ Hand function
✔ Sensation in the upper limb
Damage to these nerves can affect one or multiple parts of the arm.
What Causes Brachial Plexus Injuries?
Road Traffic Accidents
The most common cause in adults.
High-speed motorcycle accidents frequently produce severe brachial plexus injuries due to violent stretching of the neck and shoulder.
Falls from Height
Falls can generate significant traction on the nerves.
Sports Injuries
Contact sports such as:
- Rugby
- Wrestling
- Football
may cause temporary or severe nerve injuries.
Industrial Accidents
Heavy machinery injuries can damage the brachial plexus directly.
Birth-Related Injuries
Some newborns develop birth brachial plexus palsy during difficult deliveries when the baby’s shoulder becomes stuck during birth.
Types of Brachial Plexus Injuries
The severity of the injury determines treatment and recovery.
1. Neuropraxia (Stretch Injury)
The mildest form.
The nerve remains intact but temporarily stops functioning.
Symptoms may include:
- Weakness
- Tingling
- Temporary numbness
Most patients recover spontaneously.
2. Rupture
The nerve tears but remains attached to the spinal cord.
These injuries often require surgical reconstruction.
3. Avulsion
The most severe injury.
The nerve root is pulled out from the spinal cord itself.
Because the nerve is disconnected from its source, direct repair is impossible.
These injuries often require advanced nerve transfer procedures.
Symptoms of a Brachial Plexus Injury
Symptoms depend on which nerves are involved.
Upper Brachial Plexus Injury (C5-C6)
Common symptoms:
✔ Inability to lift the shoulder
✔ Difficulty bending the elbow
✔ Weakness in external rotation of the shoulder
Patients often struggle to bring the hand to the mouth.
Lower Brachial Plexus Injury (C8-T1)
Symptoms may include:
✔ Weak hand grip
✔ Difficulty opening and closing fingers
✔ Loss of finger coordination
✔ Hand numbness
Total Brachial Plexus Injury
The most severe pattern.
Symptoms
✔ Complete paralysis of the arm
✔ Loss of sensation
✔ Flail upper limb These injuries require urgent specialist evaluation.
Conclusion
Brachial plexus injuries are complex nerve injuries that can significantly affect shoulder, arm, and hand function. Early diagnosis, careful evaluation, and timely treatment are essential for achieving the best possible recovery.
Whether the injury is mild or severe, modern treatment options—including nerve transfers, tendon transfers, and rehabilitation—can help restore meaningful function and improve quality of life.
About Dr. Madhusudhan N.C.
Dr. Madhusudhan N.C. is an Orthopedic & Hand Surgery Specialist with a special interest in brachial plexus reconstruction, peripheral nerve surgery, hand surgery, microsurgery, fracture management, and upper limb reconstruction. He follows a conservative-first, evidence-based approach, focusing on restoring function and improving quality of life for patients with complex upper limb injuries.
He is also:
✔ Editorial Board Member – Journal of Hand Surgery (Asia-Pacific Volume)
✔ Recognized among the Top 10 Prominent Hand & Upper Limb Surgeons – 2026.
📍 Clinic Details & Appointment
Madhu Hand Surgery & Orthopaedic Centre
#115, 11th Main Road, 4th Cross, Coffee Board Layout,
Bangalore – 560024
📞 Call for Consultation: 7899399839
🕒 Consultation Timings: Monday to Saturday, 6:30 PM – 8:30 PM