Endoscopic carpal tunnel release, explained

What happens during the procedure

The aim is the same as in every carpal tunnel operation: divide the transverse carpal ligament so the median nerve has room again. What differs is how you get there.

Through a port of roughly five millimetres at the wrist crease, an endoscope is introduced into the carpal tunnel. The ligament is displayed from beneath on the camera, and divided under direct view. The palm is not opened at any point.

The whole thing is done under local anaesthetic as a day case. You are awake, you go home the same day, and in most cases you use the hand for light tasks within a few days.

Why the intact palm matters so much

This is the part patients rarely hear and the part that decides how the first two weeks feel.

In open surgery the skin, the subcutaneous tissue and the palmar fascia are divided to reach the ligament. That fascia is what you press on every time you lean on your hand, push yourself out of a chair, or carry a bag. Divided, it is sore for weeks.

The endoscopic approach reaches the ligament from the wrist and leaves that layer alone. Same operation on the ligament, far less collateral tissue trauma – and that, rather than the length of the scar, is why recovery is shorter.

Endoscopic or open – how to think about it

The long-term result is comparable. What differs is the first few weeks – and for most people working with their hands, that is the part that actually matters.

Where endoscopic release is the better choice

It is our standard technique for a reason, and there are situations where I prefer it over the newer ultrasound-guided approach.

When the anatomy needs to be seen. If the ultrasound view is not unequivocal, the camera is. Direct visual confirmation is hard to argue with.

When you want the most thoroughly studied option. Network meta-analyses show clear early functional advantages of single-portal endoscopy over open surgery. If depth of evidence is what reassures you, this is the technique that offers most of it.

When the case is not entirely straightforward but still does not warrant an open approach.

Both hands in one session

With the endoscopic technique both hands can be treated in a single sitting, and many patients choose to. Because the palm is untouched, you are not left with two hands you cannot use.

After open surgery I advise against it for exactly that reason: two divided palms at the same time make ordinary life genuinely difficult for a fortnight.

Recovery, realistically

Sutures come out after about two weeks. Light activity is usually possible within days. Firm gripping, leaning on the palm and tool work take longer – four to six weeks is the realistic figure for physically demanding work.

Many patients report that the night-time tingling eases in the first or second night after surgery, because the pressure on the nerve is gone immediately. Numbness takes longer and depends on how long the nerve was compressed.

A pressure tenderness in the base of the palm, either side of the access, is common in the weeks afterwards. It is called pillar pain, it is harmless, and it settles – sometimes over months rather than weeks.