It happens quickly. A motorcycle accident, a fall from height, a sports collision. The immediate aftermath is pain, shock, and a scan of obvious injuries. The arm is assessed. It moves. The patient is discharged with an analgesic and advice to rest.
Three weeks later, the arm still does not feel right. The grip is weak. There is a persistent numbness along the inner forearm. When attempting to raise the arm to the shoulder, something prevents it. Not pain exactly. A heaviness. A disconnection between the intention and the movement.
This is the characteristic timeline of a brachial plexus injury that was missed at the initial assessment. It is not unusual. A 2021 study from a major Delhi tertiary centre found a mean delay to specialist brachial plexus referral of 11.4 months from the time of injury, with more than 60 per cent of patients having been assessed at least twice without the injury being formally identified. The delay is not due to negligence. It is due to a consistent pattern: the injury presents differently from a fracture or dislocation, does not show on plain X-ray, and is easily attributed to soft tissue bruising in the early post-injury period.
The reason the delay matters: the optimal window for nerve reconstruction surgery narrows significantly after six months from injury. After twelve months, the motor end plates in the target muscles undergo irreversible changes that reduce the likelihood of meaningful recovery even after technically successful surgery. Knowing what to look for is the intervention that keeps the surgical window open.
Dr. Pradeep Kumar Singh, MCh Burns and Plastic Surgery, Head of Department at Artemis Hospital, has presented internationally on brachial plexus reconstruction, including at the Congress of the Asian Pacific Federation of Reconstructive Microsurgery (APFSRM 2024) and EUROMICRO 2024 in Milan. His work on the MSAP flap for limb reconstruction reflects the same microsurgical precision required for brachial plexus nerve reconstruction. He conducts brachial plexus injury assessments at Artemis Hospital in Gurgaon as part of a comprehensive upper limb nerve injury programme.
What Is the Brachial Plexus and Why Does It Get Injured?
The brachial plexus is the network of nerve roots that originates from the spinal cord at the C5, C6, C7, C8, and T1 levels, travels through the neck and beneath the clavicle, and enters the axilla where it divides into the terminal nerves that supply all motor and sensory function of the arm, forearm, and hand. It is the entire nerve supply of the upper limb in a single anatomical structure.
In high-energy injuries, the mechanism most commonly responsible for brachial plexus damage is traction: the head and shoulder are forced apart violently, stretching the nerve roots beyond their mechanical tolerance. This occurs in motorcycle accidents when the rider is thrown and lands on the shoulder with the head forcibly deviated away, and in falls from height with a similar impact pattern. In birth injuries, excessive traction on the head during a difficult delivery causes the same traction mechanism on the neonatal plexus.
The clinical consequences depend entirely on which nerve roots are affected, the degree of damage at each root, and whether the injury is a stretch that may recover spontaneously or an avulsion, where the nerve root is torn from the spinal cord itself, which cannot recover without surgical reconstruction. Identifying the level and type of injury is the function of the specialist assessment. Recognising that an assessment is needed is the function of the warning signs below.
Important Read: Brachial Plexus Surgery Gurgaon: Physiotherapy Treatment and Recovery
The Warning Signs: What to Look for After a High-Energy Injury
1. Arm Weakness Not Explained by an Orthopaedic Injury
An arm that cannot be raised, a grip that is absent or significantly weakened, or an elbow that will not flex, without a fracture or dislocation to account for it, is the most critical warning sign of brachial plexus involvement. In the acute trauma setting, limb weakness is routinely attributed to pain, swelling, or soft tissue bruising. Where no clear orthopaedic lesion explains the weakness, and the weakness persists beyond the first 48 to 72 hours, brachial plexus injury must be formally excluded.
2. Numbness or Tingling in a Dermatomal Pattern
Numbness or altered sensation that follows a specific skin zone rather than being diffuse and generalised suggests nerve root involvement. The medial arm and forearm (ulnar border) correspond to C8 and T1 roots. The lateral forearm and thumb correspond to C6. The middle finger corresponds to C7. The outer arm corresponds to C5. A patient who describes numbness specifically in the thumb and index finger after a shoulder injury is describing a C6 dermatomal distribution, which should be investigated for upper plexus involvement at that level.
3. The Waiter’s Tip Posture
An arm held with the shoulder adducted and internally rotated, the elbow extended, the forearm pronated, and the wrist flexed, the posture classically described as a waiter presenting a bill, indicates upper brachial plexus injury at the C5 and C6 levels. This presentation is the classic finding in Erb’s palsy, the most common form of birth-related brachial plexus injury, and in high-energy traction injuries to the upper roots in adults.
4. Horner’s Syndrome
The triad of unilateral upper eyelid drooping (ptosis), a constricted pupil (miosis), and the absence of sweating on the same side of the face (anhidrosis) in a patient who has sustained a shoulder or neck injury indicates T1 root involvement. Horner’s syndrome in this context is a reliable indicator of a preganglionic injury, frequently an avulsion at the T1 level. Its presence in the context of arm weakness effectively confirms a severe, surgically relevant brachial plexus injury that requires urgent specialist assessment. Avulsion injuries cannot recover spontaneously and require nerve transfer reconstruction within the surgical window.
5. Winging of the Scapula
When the patient extends the arm against a wall and the medial border of the shoulder blade protrudes visibly, the long thoracic nerve supplying the serratus anterior muscle is damaged. This nerve originates above the level of the brachial plexus divisions and its injury indicates damage at a proximal level. Scapular winging alongside arm weakness and numbness is a strong combined indicator of significant brachial plexus involvement.
6. Persistent Burning or Shooting Pain in the Arm
Neuropathic pain, the burning, shooting, or electric-current sensation that does not correspond to an identifiable musculoskeletal source, in the arm or shoulder after a high-energy injury, should prompt brachial plexus assessment even in the absence of visible weakness. Partial injuries to the brachial plexus frequently present with pain as the dominant symptom in the early period, before the motor deficit becomes apparent. A patient who describes a persistent burning sensation in the arm after a fall or accident, without a fracture to explain it, needs nerve conduction assessment, not simply analgesics and reassurance.
The Injury Severity Classifications: What the Assessment Determines
| Seddon Classification | Sunderland Grade | Structural Damage | Recovery Potential |
| Neuropraxia | Grade I | Conduction block only; axon intact | Full recovery; weeks to months |
| Axonotmesis | Grade II-IV | Axon disrupted; connective sheath preserved | Partial to full; months to years |
| Neurotmesis | Grade V | Complete nerve section | No spontaneous recovery; surgery required |
| Root avulsion | Beyond Grade V | Nerve root separated from spinal cord | No spontaneous recovery; nerve transfer surgery within 12 months |
Root avulsion is the most severe category and the one where the surgical window is strictest. Because the nerve root is separated from the spinal cord itself, peripheral nerve grafting cannot reconnect it. Reconstruction uses nerve transfer surgery: redirecting adjacent healthy motor nerves, most commonly the intercostal nerves, the phrenic nerve, or the contralateral C7 root, to restore specific priority functions such as elbow flexion, shoulder abduction, or hand sensation. This reconstruction must be performed within six to twelve months of injury for meaningful functional recovery to be achievable.
The Diagnostic Process at Artemis Hospital, Gurgaon
A suspected brachial plexus injury at Artemis Hospital is assessed through a structured sequence. The clinical neurological examination maps which muscles are weak or absent and which skin zones have altered sensation, allowing anatomical localisation of the injury within the plexus. This is followed by electrophysiology, specifically EMG (electromyography) and nerve conduction studies at four to six weeks post-injury, when the electrical changes in the nerve are consistently detectable. MRI myelography of the cervical spine identifies pseudomeningoceles, the fluid-filled outpouchings of the dural sleeve that occur when a nerve root is avulsed, confirming the level and type of injury at the spinal level.
The complete assessment determines whether spontaneous recovery is expected, whether the injury requires early surgical exploration, whether nerve grafting or nerve transfer is indicated, and, critically, whether the patient is still within the surgical window for meaningful reconstruction. The published guide on brachial plexus surgery, physiotherapy, and recovery at Artemis Hospital Gurgaon details the rehabilitation programme that accompanies surgical and non-surgical management.
Frequently Asked Questions: Brachial Plexus Injury Symptoms and Treatment in Gurgaon
What are the main symptoms of a brachial plexus injury?
The main symptoms of a brachial plexus injury include arm weakness or paralysis without an orthopaedic injury to explain it, numbness or tingling following specific dermatomal zones in the arm or hand, the waiter’s tip posture (arm internally rotated with elbow extended and wrist flexed), Horner’s syndrome on the affected side (drooping eyelid, small pupil, absence of facial sweating), scapular winging visible when the arm is extended against a wall, and persistent burning or shooting pain in the arm after a high-energy injury. Any combination of these symptoms after a road traffic accident, fall from height, or difficult birth delivery warrants urgent brachial plexus assessment.
How is a brachial plexus injury diagnosed in Gurgaon?
Diagnosis requires a combination of clinical neurological examination, EMG and nerve conduction studies at four to six weeks post-injury, and MRI myelography of the cervical spine. The clinical examination maps muscle and sensory deficits to specific plexus levels. The electrophysiology confirms the degree and nature of nerve damage. The MRI myelography identifies avulsion injuries at the spinal level. All three components are necessary for a complete injury classification at Artemis Hospital in Gurgaon.
Can a brachial plexus injury recover without surgery?
Neuropraxia, the mildest degree of injury involving conduction block only, recovers fully without surgery in weeks to months. Axonotmesis, where the axon is disrupted but the connective sheath is preserved, may recover partially or fully over months to years. Neurotmesis, complete nerve section, and root avulsion do not recover without surgical intervention. The key clinical question in the three to six months after injury is whether serial neurological examination and EMG studies demonstrate spontaneous recovery. Where no recovery is occurring in an injury pattern that would predict spontaneous improvement, surgical exploration within the optimal window is indicated.
What is the surgical window for brachial plexus reconstruction in Gurgaon?
The optimal window for nerve grafting is within three to six months of injury. Nerve transfer reconstruction is possible up to twelve months from injury. After twelve months, the motor end plates in the target muscles undergo progressive irreversible change that reduces the likelihood of functional recovery even after technically successful nerve reconstruction. This is why early specialist referral, when the warning signs above are present, is the most important determinant of a good functional outcome. Patients presenting to Artemis Hospital within the optimal window have a substantially better prognosis than those presenting after it has closed.
What surgical options are available for brachial plexus injury at Artemis Hospital Gurgaon?
Surgical options include neurolysis (decompression of compressed nerve segments), nerve grafting (bridging nerve gaps with sensory nerve grafts, most commonly from the sural nerve), nerve transfer surgery (redirecting healthy adjacent nerves to restore specific functions), and secondary reconstructive procedures, including tendon transfers and free muscle transfers, for late-presenting patients where primary nerve reconstruction is no longer viable. Dr. Pradeep Kumar Singh’s background in reconstructive microsurgery, including MSAP flap procedures presented at EUROMICRO 2024 in Milan, informs the same precision anatomy required for nerve reconstruction at Artemis Hospital.
How common is brachial plexus injury in India?
Brachial plexus injuries are disproportionately common in India relative to Western populations, reflecting the higher incidence of motorcycle road traffic accidents, which are the dominant mechanism of adult brachial plexus injury globally. India’s road fatality data consistently show two-wheelers involved in over 30 per cent of fatal road accidents, and non-fatal brachial plexus injury is a frequent consequence of high-speed motorcycle accidents that are not immediately fatal. Birth-related brachial plexus injury is an additional significant category, with incidence linked to the rate of macrosomic deliveries and shoulder dystocia in India’s obstetric population.
A brachial plexus injury that is assessed promptly gives the surgeon options. Delay closes them. Early referral to Artemis Hospital in Gurgaon keeps the surgical window open.
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