Dr. Amit Aggarwal (PT)
Dr. Amit Aggarwal (PT) BPT, MPT (Ortho) · Founder, 360 Neck Shoulder

Recognize the Warning Signs of Brachial Plexus Injury

Weakness or paralysis in part or all of one arm
Numbness or loss of sensation in the arm or hand
A burning or electric-shock pain shooting down the arm
Arm hanging limp following an accident or fall
Inability to lift the shoulder, bend the elbow, or grip
Symptoms following a road accident, fall, or shoulder injury
Condition Overview

Brachial Plexus Injury:
When the Nerve Network Powering Your Arm Is Damaged

Most patients who come to us with this condition have just been through a frightening event — a motorcycle accident, a fall from height, a sports collision — and now find an arm that will not respond the way it used to. Weak, numb, hanging limp, or burning with pain that travels from the shoulder down to the fingers. This is not a simple sprain or muscle strain. This points to damage in the brachial plexus — the network of nerves that carries every movement and sensation signal between your spinal cord and your arm.

The brachial plexus originates from five nerve roots in the lower neck (C5 to T1) and branches out through the shoulder to supply the entire arm, forearm, and hand. Because it is essentially the "wiring" for your whole upper limb, an injury anywhere along this network can disrupt strength, sensation, and coordination far from the original injury site. Severity exists on a spectrum: a neuropraxia is a stretch injury to the nerve that often recovers on its own; an axonotmesis involves damage to the nerve fibers within an intact outer sheath; and an avulsion is a complete tear of the nerve root from the spinal cord — the most severe form, which does not heal without surgery.

This is why accurate, early classification matters more in brachial plexus injury than in almost any other neck or shoulder condition. A mild stretch injury managed correctly can recover with structured physiotherapy alone. A severe avulsion misdiagnosed as "just a strain" and left untreated for months can mean a permanently non-functional arm, because the window for the best surgical outcomes — nerve grafting or nerve transfer — narrows significantly after the first three to six months.

At 360 Neck Shoulder Advanced Rehabilitation Centre, our approach is built on this exact principle: every brachial plexus injury gets a precise neurological work-up first, so the right treatment path — conservative rehabilitation or urgent surgical referral — is identified without delay. Alongside this, we begin protective rehabilitation immediately to preserve joint mobility and muscle health while the nerve recovers or while a surgical decision is made.

Root Causes & Risk Factors

What Causes Brachial Plexus Injury:
From Road Trauma to Birth Injury

Brachial plexus injuries arise from forceful stretching, compression, or tearing of the nerve network, with the mechanism of injury directly influencing severity and the most appropriate treatment pathway.

  • Road Traffic Accidents (Most Common Cause in Adults): High-speed motorcycle and car accidents are the leading cause of severe brachial plexus injury, particularly when the head and shoulder are forcefully driven apart during impact. This mechanism — common on Noida-Greater Noida Expressway and NH-24 traffic corridors — frequently produces the most severe injury patterns, including nerve root avulsion.
  • Falls and Sports Collisions: A fall onto an outstretched arm, a hard tackle in contact sports, or a direct blow to the shoulder can stretch or compress the brachial plexus. These injuries range from mild "stinger" or "burner" sensations that resolve within minutes to more significant stretch injuries requiring full clinical evaluation.
  • Shoulder Dislocation: A dislocated shoulder can stretch the brachial plexus as the joint moves out of position, and the nerve injury may not become apparent until after the dislocation itself is treated, which is why post-dislocation neurological screening is an essential and sometimes overlooked step.
  • Birth-Related Brachial Plexus Injury (Erb's Palsy): During a difficult delivery, particularly with shoulder dystocia, excessive traction on a newborn's neck and shoulder can injure the brachial plexus, most commonly affecting the upper nerve roots (C5-C6) and producing the classic "waiter's tip" arm posture. Early identification and structured infant physiotherapy significantly influence long-term outcomes.

TECAR Nerve-Healing Therapy & Robotic Neuromuscular Re-Education

Our specialized TECAR system improves local circulation around the injured nerve pathway to support the biological nerve-healing environment, while our robotic-assisted re-education system provides precise, repeatable movement patterns that help retrain weakened muscles as nerve signals gradually return. Combined with functional electrical stimulation, this approach keeps muscle tissue responsive during the nerve regeneration period, when disuse atrophy is the biggest threat to eventual functional recovery.

Nerve-Healing
Support Tech
Our Clinical Pathway

Our Screening-First,
Three-Stage Clinical Pathway

Because brachial plexus injury severity ranges from a recoverable stretch to a surgical emergency, our pathway is built around accurate early classification first — ensuring every patient reaches the right level of care within the critical early treatment window.

Stage 1 — Neurological Mapping & Injury Severity Classification (Visit 1)

Every suspected brachial plexus injury begins with detailed manual muscle testing across all major shoulder, elbow, wrist, and hand movements, combined with sensory mapping to identify exactly which nerve roots or trunks are affected. We take a thorough history of the injury mechanism, prior imaging, and any nerve conduction study results if already performed. Where features suggest a severe injury — complete paralysis, absent sensation, or a high-velocity injury mechanism — we coordinate immediate referral to a brachial plexus surgery specialist, since surgical timing is one of the strongest predictors of functional recovery in severe cases.

Stage 2 — Protective Rehabilitation During Nerve Recovery or Pre-Surgical Period

While nerves heal naturally or while a surgical decision is being finalized, we focus on protecting the arm from the secondary damage that disuse causes — passive range of motion to prevent joint stiffness, particularly frozen shoulder, gentle nerve gliding exercises to maintain nerve mobility through surrounding tissue, and positioning education to prevent contractures. This stage is frequently skipped in conventional care, yet it directly determines how much function the arm will be able to use once nerve signals return.

Stage 3 — Neuromuscular Re-Education & Functional Strength Rebuilding

As nerve signals progressively return — whether through natural regeneration or following surgical repair — this stage uses robotic-assisted re-education, functional electrical stimulation, and graded strengthening to help the brain and muscles relearn coordinated movement patterns. Because nerves regenerate slowly, this stage often continues over many months, with therapy progressively advancing from proximal shoulder control through to fine hand and finger function as the nerve signal reaches each muscle group in turn.

Patient Questions

Frequently Asked
Questions on Brachial Plexus Injury

The brachial plexus is a network of nerves running from the lower neck, through the shoulder, and into the arm and hand, controlling nearly all movement and sensation in the upper limb. A brachial plexus injury occurs when these nerves are stretched, compressed, or torn. The most common causes are road traffic accidents — particularly motorcycle accidents where the head and shoulder are forced apart — falls from height, sports collisions in contact sports, shoulder dislocation, and birth trauma in newborns during a difficult delivery. The severity ranges from a mild stretch injury that recovers on its own to a complete nerve root avulsion requiring surgical repair.
Brachial plexus injury weakness is confined to one arm and typically follows a recent traumatic event such as an accident, fall, or shoulder injury, with symptoms present from the moment of injury rather than appearing suddenly without cause. It does not affect facial muscles, speech, or the leg on the same side. A stroke, by contrast, often causes sudden weakness affecting the face, arm, and leg together, frequently with slurred speech, confusion, or vision changes, and requires emergency medical attention. If arm weakness appears suddenly without a clear preceding injury, or is accompanied by facial drooping or speech difficulty, this is a medical emergency and you should seek immediate emergency care rather than physiotherapy.
It depends entirely on the severity of the nerve damage. Neuropraxia — a stretch or compression of the nerve without structural tearing — commonly recovers over weeks to months with appropriate physiotherapy supporting nerve healing and preventing muscle wasting and joint stiffness during recovery. More severe injuries, including nerve rupture or nerve root avulsion from the spinal cord, generally do not recover on their own and require surgical intervention such as nerve grafting or nerve transfer, ideally performed within the first few months after injury for the best functional outcome. Accurate early classification of injury severity through clinical examination and nerve conduction studies is essential to determine the right treatment pathway.
While a brachial plexus injury heals, the affected arm typically experiences significant muscle weakness and reduced use, which puts it at high risk for secondary complications: joint stiffness — particularly frozen shoulder, muscle wasting (atrophy) from disuse, and soft tissue contractures that can permanently limit range of motion even after the nerve itself recovers. Starting physiotherapy early — focused on passive range of motion, gentle nerve gliding exercises, and protecting joint mobility — preserves the physical foundation the arm will need once nerve signals return. Waiting until the nerve has fully healed before starting rehabilitation often means dealing with a stiff, deconditioned arm in addition to the original nerve injury, significantly slowing overall recovery.
Recovery timelines vary widely depending on injury severity and which part of the plexus is affected. Nerves regenerate at an approximate rate of about one millimeter per day, meaning recovery of function in muscles further down the arm, such as the hand, naturally takes longer than recovery closer to the shoulder. Mild stretch injuries may show meaningful improvement within six to twelve weeks, while injuries requiring surgical repair often take twelve to eighteen months or longer for nerves to regrow and reconnect with target muscles, with rehabilitation continuing throughout this period to maximize functional use of the arm as nerve signals gradually return.
Arm weakness or numbness following a motorcycle accident, fall, or significant shoulder trauma should be evaluated promptly, since brachial plexus injuries are common in these scenarios and early diagnosis directly affects treatment options and outcomes. The first step is a thorough clinical neurological examination to assess which specific nerves are affected and the severity of involvement, often supported by nerve conduction studies or MRI to confirm the diagnosis. If the injury is identified as severe — such as a complete nerve rupture or avulsion — timely referral to a brachial plexus surgery specialist is critical, as the best surgical outcomes are associated with intervention within the first three to six months after injury. Alongside this, starting protective physiotherapy early helps preserve joint mobility and muscle health while the appropriate treatment path is determined.