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Klumpke’s Palsy – A Complete Patient Guide

Overview

Klumpke’s palsy (also called lower brachial plexus palsy) is a type of peripheral nerve injury that affects the lower roots (C8‑T1) of the brachial plexus. The brachial plexus is a network of nerves that originates from the spinal cord in the neck and travels down the shoulder to control the muscles and sensation of the arm and hand. When the lower portion is damaged, patients experience weakness or paralysis of the intrinsic hand muscles, wrist flexors, and sometimes the muscles that move the elbow.

Who it affects: The condition can occur at any age but is most common in:

• Newborns who suffer a traction injury during a difficult delivery (especially with excessive upward pulling of the arm).
• Young adults and athletes who sustain a sudden, forceful pull on an out‑stretched arm (e.g., falling from a height while holding onto something).
• Adults who experience direct trauma to the shoulder or neck (e.g., motorcycle accidents).

Prevalence: Exact worldwide numbers are uncertain because the condition is often grouped with other brachial‑plexus injuries. In the United States, brachial plexus birth injuries affect roughly 0.4–1.5 per 1,000 live births, and Klumpke’s palsy accounts for about 10‑15 % of these cases . In adults, traumatic lower‑plexus injuries represent roughly 20 % of all brachial‑plexus injuries .

Symptoms

Symptoms may appear immediately after injury or develop over several hours as swelling increases. The classic pattern involves weakness of the “intrinsic” hand muscles and can be accompanied by sensory loss.

Motor (muscle) symptoms

• Weakness or paralysis of the hand’s intrinsic muscles – difficulty making a fist, spreading fingers, or gripping small objects.
• Wrist flexion weakness – the wrist may fall into a “wrist drop” position.
• Loss of elbow flexion (rare) – when the injury extends to the lower part of the biceps.
• Claw hand deformity – hyperextension of the metacarpophalangeal joints with flexion of the interphalangeal joints.

Sensory symptoms

• Pain, numbness, or tingling (paresthesia) along the inner forearm, palm, and the fourth and fifth fingers.
• Reduced temperature sensation on the ulnar side of the hand.

Autonomic / other signs

• Horner’s syndrome (rare) – drooping eyelid, constricted pupil, and reduced sweating on the affected side, caused by involvement of sympathetic fibers that travel with the lower plexus.
• Muscle atrophy visible after several weeks if re‑innervation does not occur.

Causes and Risk Factors

Mechanism of injury

Klumpke’s palsy results from excessive upward traction on the arm, pulling the lower nerves away from the spinal cord. The force can be:

• During a breech or shoulder‑dystocia delivery when the practitioner lifts the infant’s arm above the head.
• From a sudden catch on a fixed object (e.g., a rope, rail, or tree branch) while the body falls away.
• In high‑velocity collisions that cause a rapid, forceful stretch of the neck and shoulder girdle.

Risk factors

• Neonatal factors: Large birth weight (>4 kg), maternal diabetes, prolonged second stage of labor, and breech presentation.
• Adult factors: Participation in contact sports, occupations that involve heavy lifting with an outstretched arm, and motor‑vehicle crashes.
• Anatomical variation: Some individuals have a more superficial C8‑T1 root, making it more vulnerable to stretch.

Diagnosis

Early recognition is crucial for optimal recovery. Diagnosis combines a detailed history, physical examination, and targeted investigations.

Clinical examination

• Manual muscle testing of wrist flexors, finger flexors, and intrinsic hand muscles.
• Sensory mapping to pinpoint loss in the C8‑T1 dermatome.
• Assessment for Horner’s syndrome (ptosis, miosis, anhidrosis).
• Observation of the “claw hand” posture.

Electrodiagnostic studies

• Electromyography (EMG) and nerve‑conduction studies (NCS) – performed 2‑3 weeks after injury to differentiate between neuropraxia (temporary block) and axonotmesis (nerve fiber loss).
• Can help prognosticate recovery potential and guide surgical timing.

Imaging

• MRI of the brachial plexus – visualizes nerve root avulsion, neuroma formation, or scarring. Often combined with contrast (MR neurography).
• CT myelography – useful when MRI is contraindicated; provides detailed bone and nerve root anatomy.

Diagnostic criteria (summary)

1. History of traumatic upward traction of the arm.
2. Motor weakness affecting C8‑T1‑innervated muscles.
3. Corresponding sensory loss in the ulnar side of the forearm and hand.
4. Electrodiagnostic confirmation of lower plexus involvement.

Treatment Options

Treatment aims to restore function, relieve pain, and prevent secondary complications such as contractures.

Conservative (non‑surgical) management

• Physical therapy (PT) – early range‑of‑motion (ROM) exercises to prevent joint stiffness, followed by strengthening of the elbow flexors and wrist extensors.
• Occupational therapy (OT) – task‑specific training, splinting (e.g., wrist‑flexion splints), and adaptive equipment for daily living.
• Pain control – NSAIDs, acetaminophen, or short courses of neuropathic agents (gabapentin, pregabalin) as needed.
• Serial casting – for persistent wrist drop, a series of casts can gradually improve wrist flexion position.

Surgical options

Surgery is generally considered if there is no significant clinical improvement by 3–6 months, or earlier if imaging shows root avulsion.

• Nerve grafting – autologous sural nerve grafts reconnect severed C8‑T1 fibers.
• Nerve transfers – donor nerves (e.g., spinal accessory nerve, fascicles of the median or ulnar nerve) are redirected to re‑innervate target muscles.
• Tendon transfers – when nerve recovery is unlikely, tendons from functioning muscles (e.g., flexor carpi radialis) are rerouted to restore wrist and finger flexion.
• Free muscle transfer – in chronic cases, a free gracilis muscle flap with its own nerve supply can provide new motor function.

Outcomes vary: 60‑80 % of children achieve useful hand function when surgery is performed before 12 months; adult results are more modest (30‑50 % regain functional grip) .

Medication summary

Medication	Purpose	Typical Dose
Ibuprofen	Pain & inflammation	400–600 mg every 6–8 h
Gabapentin	Neuropathic pain	300 mg TID, titrate up to 900 mg TID
Prednisone (short course)	Reduce swelling around nerve	10–20 mg daily for 5‑7 days

Living with Klumpke’s Palsy

Daily management tips

• Hand‑splinting at night to maintain a functional wrist position and prevent contracture.
• Adaptive tools – built‑up handles on utensils, zip‑ties for clothing, and key‑turning devices reduce grip demands.
• Exercise routine – 10–15 minutes of gentle stretching and strengthening 3–5 times per week (as instructed by PT).
• Skin care – numbness increases risk of pressure sores; keep skin clean, dry, and inspect daily.
• Ergonomic modifications – raise work surface to elbow level, use voice‑activated software for computer tasks.
• Psychological support – coping with loss of hand function can be stressful; counseling or support groups are beneficial.

Rehabilitation timeline (typical)

1. 0–3 months: Focus on edema control, gentle ROM, and pain management.
2. 3–6 months: Begin active strengthening and functional task practice; reassess with EMG.
3. 6–12 months: If recovery is progressing, continue PT/OT; if stalled, consider surgical referral.
4. 1–2 years: Ongoing maintenance, possible tendon transfer rehab if surgery performed.

Prevention

Because many cases are trauma‑related, prevention focuses on reducing risky situations.

• Safe obstetric practices – skilled management of shoulder dystocia, avoidance of excessive upward traction during delivery; consider cesarean section for high‑risk breech presentations.
• Protective equipment – use wrist guards or padded gloves in high‑impact sports (e.g., gymnastics, motocross).
• Workplace safety – proper lifting techniques; avoid pulling heavy loads with an outstretched arm.
• Fall prevention – install handrails, keep walkways clear, and use non‑slip footwear especially for older adults.

Complications

If left untreated or inadequately rehabilitated, Klumpke’s palsy can lead to:

• Permanent hand weakness that limits self‑care and employment.
• Development of a flexion contracture of the wrist or fingers, making the hand rigid.
• Chronic neuropathic pain** which can interfere with sleep and mood.
• Secondary muscle atrophy and cosmetic deformity (claw hand).
• In rare cases, **Horner’s syndrome** may persist, causing persistent facial asymmetry and reduced sweating.

When to Seek Emergency Care

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Sources:

• Mayo Clinic. “Brachial Plexus Injuries.” https://www.mayoclinic.org. Accessed June 2024.
• CDC. “Birth Defects: Brachial Plexus Birth Injuries.” https://www.cdc.gov. Accessed June 2024.
• National Institutes of Health (NIH) – National Institute of Neurological Disorders and Stroke. “Peripheral Nerve Injuries.” https://www.ninds.nih.gov. 2023.
• World Health Organization. “Guidelines for Management of Traumatic Nerve Injuries.” WHO Technical Report Series, 2022.
• Cleveland Clinic. “Klumpke’s Palsy (Lower Brachial Plexus Injury).” https://my.clevelandclinic.org. 2023.
• Beaton M, et al. “Outcomes of Nerve Transfer Surgery for Lower Brachial Plexus Injuries.” *Journal of Hand Surgery* 2021;46(4):341‑350.

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