Carpal Tunnel Surgery Explained: Traditional vs Keyhole (Minimally Invasive) Techniques

Carpal tunnel release surgery involves cutting the transverse carpal ligament, the thick tissue that presses on the median nerve. This relieves pressure, easing symptoms like pain, numbness, tingling, and weakness in the hand and fingers.

At Orthopaedic Innovation, our minimally invasive procedure typically takes less than 10 minutes (total surgical time is ~1 hour) and is performed under local anaesthetic, allowing patients to return home shortly after surgery.

Learn more about the procedure on our Carpal Tunnel Decompression Surgery page.

In a traditional open release, a small incision (about 3–5 cm) is made in the palm to directly access and divide the ligament. This gives the surgeon full visibility of the nerve and surrounding structures.

Advantages

• Direct, precise view of the carpal tunnel
• Effective for complex or revision cases
• Proven success rate exceeding 90%

Considerations

• Larger incision and longer healing time
• More post-operative tenderness in the palm
• Slightly longer recovery time for carpal tunnel surgery compared with keyhole approaches

The British Society for Surgery of the Hand (BSSH)¹ reports that open carpal tunnel release remains a highly successful, well-established procedure.

At Orthopaedic Innovation, we are proud to offer a revolutionary, minimally invasive solution for Carpal Tunnel Syndrome, designed to relieve pressure on the median nerve through a single, small incision.

Using advanced microsurgical tools and ultrasound guidance, the ligament is carefully released while preserving surrounding tissues, allowing for faster healing, minimal discomfort, and exceptional precision.

Advantages

• Tiny incision (2-4mm) with almost invisible scarring
• Less pain and swelling after surgery 
• Faster recovery and return to activity (often within just 24 hours)
• Improved cosmetic outcome

Considerations

• Not suitable for all cases (e.g. prior wrist surgery or heavy scarring)
• Requires specialist training and experience

According to the BSaB1, minimally invasive surgery offers comparable long-term success to traditional methods…with the added benefit of quicker recovery and less post-operative pain.

Here’s an overview: 

Mild swelling, stiffness, or tenderness is normal in the first few days. Early movement and following your carpal tunnel surgery aftercare instructions help optimise healing.

• Dressings and stitches: Absorbed within 10–14 days.
• Driving: Usually possible within 24 hours for keyhole, or 3–4 weeks for open surgery.
• Return to work: Typically 2–3 weeks (keyhole) or 4–6 weeks (open), depending on your job type.
• Full recovery: Grip strength and hand function generally return within 2–3 months.

Our team provides comprehensive post carpal tunnel surgery care, including guidance on wound care, managing swelling, and physiotherapy-led hand exercises to restore function safely and effectively.

Both open and keyhole carpal tunnel surgery are effective, but the minimally invasive approach offers significant advantages for eligible patients: particularly in reducing recovery time and scarring.

At Orthopaedic Innovation, our specialists assess each patient individually to determine the best technique for lasting relief. For many, our minimally invasive solution for Carpal Tunnel Syndrome offers the most efficient path to recovery and restored hand function.

1. How successful is carpal tunnel surgery?

   Both open and minimally invasive approaches have success rates above 90%, offering significant symptom relief and functional recovery.

2. How soon can I drive or return to work?

   Most patients can drive within 24 hours (keyhole) or 3–4 weeks (open), depending on comfort and hand strength.

3. Can carpal tunnel come back after surgery?

   Recurrence is rare but possible. If symptoms return, a repeat procedure can often resolve the issue. Our minimally invasive approach is particularly well suited for revision cases.

4. What are the risks?

   Both methods are safe. Temporary tenderness, swelling, or stiffness can occur but usually resolve quickly with proper aftercare.