Why do you need this procedure?
A computer will guide the implantation of your electrodes. The electrodes will help us to understand where your seizures are starting. In order to implant the electrodes we need to tell the computer where your head is positioned. This process is called registration and is done using the bone markers.
These small markers give a very accurate registration; this will lead to a more precise implantation of the electrodes which can help to reduce the risks associated with this operation such as bleeding or inaccurate positioning of the electrodes.
How is the procedure performed?
We will place between five to seven small bone screws in your skull through a small incision in the skin. The procedure will last about 30 minutes; it will be performed under local anaesthetic.
The screws will be removed during your main operation when you will be under general anaesthetic.
The insertion of bone markers will be performed by your Consultant Neurosurgeon or by a qualified member of the Epilepsy Team.
We want to involve you in all the decisions about your care and treatment. If you decide to go ahead with treatment, by law we must ask for your consent and will ask you to sign a consent form. This confirms that you agreed to have the procedure and understand what it involves. Staff will explain all the risks, benefits and alternatives before they ask you to sign a consent form. If you are unsure about any aspect of your proposed treatment, please don’t hesitate to speak with a senior member of staff again.
Is there an alternative choice to this procedure?
The majority of neurosurgical operations can be performed with a different type of marker applied on your skin. However the bone markers give more accurate results and make the implantation of the electrodes safer. This is the reason why we prefer to use this method.
This procedure is a well-recognised neurosurgical technique.
What are the risks associated with this procedure?
- small risk of infection
- small risk of bleeding
- discomfort around the area of insertion
- adverse reaction to local anaesthetic.
If these issues happen, they usually occur while you are still in hospital. You would receive support from our medical team.
Where can I get more information?
Contact details
Direct telephone: 020 3448 3593
Switchboard: 020 3456 7890
Extension: 83593
Fax: 020 3448 3340
Address
National Hospital for Neurology & Neurosurgery
Dept. Neurosurgery
Queen Square
London WC1N 3BG
Box 32
Website: www.
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Page last updated: 14 May 2024
Review due: 01 May 2026