Understanding Carpal Tunnel Syndrome

Carpal tunnel syndrome is the most frequently reported nerve entrapment disorder worldwide, currently affecting an estimated 4–5% of the population. The rise in digital device dependency—smartphones, tablets, laptops, and prolonged computer usage—along with increasingly sedentary daily habits has contributed to the steady increase in cases over the last decade.

What is Carpal Tunnel Syndrome?

Carpal tunnel syndrome (CTS) occurs when the median nerve becomes compressed within the wrist’s carpal tunnel, a narrow passageway surrounded by bones and ligaments. Because this tunnel is rigid with little room for expansion, any swelling or narrowing can put pressure on the nerve. Early warning signs often include tingling or numbness in the thumb, index, middle, and part of the ring finger—symptoms that are especially noticeable at night. If untreated, this condition can progress to constant sensory loss and eventually weakness and muscle wasting in the hand.

Causes and Risk Factors

Carpal tunnel syndrome is typically the result of multiple contributing factors rather than a single cause. The most recognized risk factors include:

• Repetitive movements: Frequent typing, data entry, knitting, gaming, or assembly line tasks.
• Mobile device overuse: Holding smartphones or tablets for more than two hours daily, particularly with the wrist bent or heavy thumb use.
• Extended computer use: More than 10–12 hours of daily computer work, especially with poor ergonomic positioning such as high keyboards or extended wrists.
• Sedentary lifestyle and obesity: A body mass index (BMI) of 30 or above doubles the risk due to fluid retention and microvascular strain.
• Underlying medical conditions: Diabetes, hypothyroidism, rheumatoid arthritis, and pregnancy-related swelling can all increase vulnerability.
• Wrist injuries or anatomy: Previous fractures, dislocations, or naturally narrow tunnels.
• Genetics: Having a first-degree relative with carpal tunnel syndrome raises individual risk.

Symptoms of Carpal Tunnel Syndrome

The symptoms of carpal tunnel syndrome usually progress gradually:

• Tingling, numbness, or burning sensations in the fingers served by the median nerve, often disturbing sleep.
• Weak grip strength, reduced hand coordination, or frequent dropping of objects.
• Pain that radiates into the wrist or forearm during activities.
• In advanced cases, constant numbness and visible wasting of the thumb muscles.

Diagnosis

Carpal tunnel syndrome is primarily diagnosed clinically, based on history and physical examination. In uncertain cases, further tests help confirm the condition:

• Nerve conduction studies (NCS): Reveal slowed electrical signals in the median nerve.
• Ultrasound: Measuring the nerve’s cross-sectional area (>9 mm²) at the wrist is particularly useful in cases linked to heavy smartphone use.

Treatment Options

Management depends on severity and duration of symptoms.

• Conservative treatment (first 6 weeks): Wearing a neutral-position wrist splint at night and modifying daily activities.
• Adjunct therapies: An ultrasound-guided corticosteroid injection can offer significant short-term relief. Yoga and ultrasound therapy may also provide some benefit.
• Medication: Non-steroidal anti-inflammatory drugs (NSAIDs) can ease discomfort, but gabapentinoids and diuretics are not recommended for carpal tunnel syndrome alone.
• Surgery: If conservative care fails or if nerve tests show severe impairment, surgical decompression is advised. Both endoscopic and mini-open techniques are effective, with the endoscopic method often allowing an earlier return to normal activities.

Prevention Strategies

Preventing carpal tunnel syndrome involves reducing repetitive strain and improving lifestyle habits:

• Keep wrists in a neutral position, with keyboards placed low and elbows at right angles.
• Follow the “30-30 rule”: every 30 minutes, take a 30-second break for stretching.
• Use voice commands or external keyboards to reduce strain from heavy phone use.
• Maintain a healthy weight, keep blood sugar under control, and aim for at least 150 minutes of physical activity per week.

Make an Appointment for Carpal Tunnel Syndrome Treatment at Gleneagles Hospital Johor

If you are experiencing any of the symptoms of carpal tunnel syndrome, get in touch with us to book an appointment with an orthopaedic surgeon at Gleneagles Hospital Johor today. We assure you the best possible care tailored to your specific needs.