Can carpal tunnel syndrome be treated without surgery?

What is carpal tunnel syndrome?

The carpal tunnel is a narrow passage at the front of the wrist formed by the wrist bones and a strong ligament. The median nerve and the tendons that bend the fingers pass through it. When pressure inside the tunnel increases, the nerve is squeezed, causing carpal tunnel syndrome.

Typical symptoms are tingling, numbness and pain in the thumb, index finger, middle finger and half of the ring finger. Symptoms are often worse at night and may wake people from sleep. Shaking the hand often brings temporary relief. Over time, grip may weaken and fine tasks such as buttoning can become difficult.

Who is more likely to develop it?

Carpal tunnel syndrome is more common in women, during pregnancy, and in people with diabetes, an underactive thyroid, rheumatoid arthritis or higher body weight. Repetitive, forceful hand use and vibrating tools may contribute.

Symptoms that begin during pregnancy often improve after the baby is born. Treating an underlying condition, such as thyroid disease, may also ease symptoms.

Do wrist splints help?

Wrist splints keep the wrist in a neutral position, particularly at night, to reduce pressure on the nerve. A Cochrane review of 29 trials with 1,937 adults found that, compared with no active treatment, splinting may provide little or no benefit for symptoms in the short term, and the evidence was of low certainty 1.

In one included study of 80 participants, night-time splinting may have produced a higher rate of overall improvement in the short term 1. In another small study, 7 of 40 people using splints reported transient side effects 1. Splints remain a low-risk option that some people find helpful, especially for night symptoms, but they do not work for everyone.

What other non-surgical treatments are used?

A clinical practice guideline for physical therapists covers the assessment and non-surgical management of carpal tunnel syndrome, including education, splinting and hand therapy approaches 2. Adjusting how the hand is used, such as avoiding prolonged bending of the wrist, taking breaks from repetitive tasks and changing tool grips, can reduce symptoms.

A steroid injection into the carpal tunnel may reduce symptoms for weeks to months in some people. It is often used when symptoms are troublesome but surgery is not yet wanted or appropriate.

When is surgery recommended?

Carpal tunnel release surgery divides the ligament over the tunnel to relieve pressure on the nerve. It is usually recommended when there is constant numbness, weakness or wasting of the muscles at the base of the thumb, nerve conduction tests show severe compression, or symptoms continue despite several months of non-surgical treatment.

Surgery is typically performed under local anaesthetic as a day procedure. Most people notice improvement in night symptoms quickly, while recovery of strength and sensation may take longer, particularly when the nerve has been compressed for a long time.

How is the diagnosis confirmed?

Diagnosis is based on the pattern of symptoms and examination findings, such as reduced sensation in specific fingers and tests that reproduce symptoms. Nerve conduction studies measure how well signals travel along the nerve and help confirm the diagnosis and assess severity, especially before surgery.

Other conditions can cause similar symptoms, including a pinched nerve in the neck and peripheral neuropathy, so accurate diagnosis matters.

When should I see a doctor urgently?

Seek prompt assessment for sudden weakness of the hand, rapidly worsening numbness, symptoms after a wrist injury or fracture, or numbness spreading beyond the typical fingers.

Muscle wasting at the base of the thumb means the nerve is significantly affected and should be assessed without delay.

Frequently asked questions