Carpal Tunnel Syndrome: Symptoms and When Surgery Is Needed

 

Understanding carpal tunnel syndrome

Carpal tunnel syndrome occurs when the median nerve, which runs from your forearm into the palm of your hand, becomes compressed or squeezed at the wrist. The carpal tunnel itself is a narrow passageway of ligaments and bones at the base of the hand. When tissues within this tunnel swell, they can put pressure on the median nerve, leading to a range of uncomfortable symptoms. It is a surprisingly common condition that affects about 3-6% of the adult population, with women being three times more likely to develop it than men, often due to smaller carpal tunnels.

Causes of carpal tunnel syndrome

While often associated with repetitive strain injury, the causes of carpal tunnel syndrome are multifaceted. Any condition that reduces the space in the carpal tunnel or increases pressure on the median nerve can contribute to its development. Understanding these causes is crucial for prevention and effective management. These may include:

• Repetitive hand and wrist movements- Activities involving prolonged or repetitive flexing and extending of the wrist.

• Genetic predisposition- Some individuals are born with smaller carpal tunnels.

• Underlying medical conditions- Rheumatoid arthritis, diabetes, thyroid imbalance, obesity, and pregnancy.

• Wrist injuries- Fractures or sprains to the wrist can alter the anatomy of the carpal tunnel.

Recognising the symptoms

The symptoms of carpal tunnel syndrome typically develop gradually and worsen over time. Early recognition is key to preventing progression and achieving better treatment outcomes. Common symptoms are:

• Tingling in hands- Often described as pins and needles, primarily affecting the thumb, index, middle, and half of the ring finger.

• Numbness in fingers- A loss of sensation in the fingers supplied by the affected nerve.

• Weakness in the hand- Difficulty gripping objects or performing fine motor tasks.

• Pain- Aching pain in the wrist, hand that can sometimes radiate up the arm.

• Nocturnal symptoms- Symptoms often worsen at night, waking individuals from sleep, a classic sign due to bent wrists during sleep.

Diagnosis and early intervention

Early intervention can significantly improve outcomes, with over 80% of cases responding well to non-surgical treatments when caught early. Carpal tunnel syndrome requires accurate assessment of nerve function through a combination of:

• Physical examination (along with clinical tests like Phalen's sign and Tinel's sign)

• Nerve conduction studies

• Electromyography (EMG)

Treatment options available

The good news is that many cases of carpal tunnel syndrome can be managed effectively without surgery. The choice of hand numbness treatment depends on the severity of your symptoms and how long you have been experiencing them. The mode of treatment involves:

Non-surgical approaches

For mild to moderate symptoms, conservative treatments are often the first line of defence:

• Wrist splinting- Wearing a splint, especially at night, to reduce pressure on the median nerve.

• Activity modification- Adjusting work habits, taking breaks, and using ergonomic tools to reduce repetitive strain injury.

• Anti-inflammatory agents- To reduce pain and inflammation.

• Physical therapy- Specific exercises to improve nerve gliding and strengthen wrist muscles.

• Corticosteroid injections- Administered directly into the carpal tunnel for temporary relief.

Carpal tunnel surgery

If conservative treatments fail to provide sufficient relief or if nerve damage is significant, carpal tunnel surgery may be recommended. This procedure, known as ‘carpal tunnel release’, involves cutting the ligament that forms the roof of the carpal tunnel, thereby enlarging the tunnel and relieving pressure on the median nerve. This surgery is highly effective, boasting a success rate of over 90% in significantly reducing or eliminating symptoms. Patients typically experience relief within weeks, with full recovery often achieved within a few months.

Care essentials

Following certain do’s and don’ts can help manage carpal tunnel syndrome symptoms, reduce strain on the wrist, and support better hand function in daily activities.

Conclusion

Untreated carpal tunnel syndrome can significantly affect hand comfort, strength, and daily activities. Recognising the early signs and seeking timely medical guidance can help prevent complications and improve hand function. Manipal Hospitals is committed to providing you with comprehensive care for carpal tunnel syndrome and other nerve-related conditions. For advanced diagnostic facilities and personalised treatment approaches to support your hand health, consult our experienced specialists in the orthopaedics department of Manipal Hospitals Siliguri today.