How keyhole carpal tunnel surgery is carried out

By: Bupa Health UK

This animation will show how keyhole carpal tunnel surgery is used to treat carpal tunnel syndrome. Click the navigation arrows below the animation screen to play, pause, rewind or fast-forward the animation. This animation contains sound. Your wrist contains tendons to bend your fingers and wrist. There are also nerves to carry signals between your brain and your wrist and hand. Tendons and the median nerve run into the hand through the carpal tunnel, a channel formed by the wrist bones (the carpal bones) and the strong ligament (the carpal ligament) that forms a roof over them. There isn't much room inside the carpal tunnel, so swelling of the wrist tissues may put pressure on the median nerve.

The pressure on the nerve may cause pain, numbness and "pins and needles". The condition is known as carpal tunnel syndrome. Carpal tunnel syndrome can be treated by releasing the pressure on the median nerve by cutting the carpal ligament. This is called carpal tunnel release surgery.

Carpal tunnel release surgery can be done in two ways open surgery or keyhole surgery. This animation shows keyhole surgery. Keyhole surgery is usually carried out using a local anaesthetic injected into your wrist and the palm of your hand. This completely blocks feeling in your wrist and hand and you will be awake during the procedure.

Your surgeon may use a tourniquet on your arm. This is a tight band that squeezes your upper arm. Once the anaesthetic has taken effect, your surgeon will make cuts in your wrist and the palm of your hand for the insertion of the endoscope (the viewing instrument) and surgical instruments. Your surgeon will then insert a thin flexible telescope, called an endoscope, into the cut in your wrist. This is used to see inside your wrist. Your surgeon will then cut the carpal ligament to remove the pressure on the nerve.

How keyhole carpal tunnel surgery is carried out

The skin cuts are closed with dissolvable stitches and a dressing is placed over your stitches. Your surgeon will put a bandage on your hand and may put your arm into a sling for extra support and to reduce swelling. This is the end of the animation. Click on the animation screen to watch it again.

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