Lesioning techniques
Lesioning is a form of surgery used to treat some of the
symptoms of Parkinson's
Lesioning techniques involve making selective damage (a
lesion) to certain cells within specific areas of the brain.
The target site is located with the aid of computer technology.
An electrode is then inserted with its tip at the optimum
point.
A small destructive lesion is made by passing an electric
current through the tip.
These lesions are known to have a beneficial effect on some
Parkinson's symptoms.
Pallidotomy
Pallidotomy is the most common form of lesioning technique
used.
The target site is located in the part of the brain known as the
globus pallidus.
Pallidotomy is most important for its effect on rigidity and
akinesia (slowness of movement), and reductions in the sudden,
involuntary movements (dyskinesia) that can result from drug
therapy.
Stereotactic thalamotomy
Stereotactic thalamotomy is recommended mainly for patients with
a severe or drug resistant tremor, especially when one side of the
body is afflicted more than the other.
Thalamotomy is used mainly to treat tremor.
Patient C's experience of stereotactic
thalamotomy is based on a true story. The name has been witheld
to protect confidentiality.
Subthalamotomy
Subthalamotomy has been performed by neurosurgeons at a few
hospitals.
This procedure involves making a destructive lesion in the
subthalamic nucleus rather than implanting an electrode as is the
case with subthalamic stimulation.
Subthalamotomy is still experimental. It has not gained
popularity because of the perceived high risk and the uncertainty
about its long term effects in a progressive condition.
You can read more on lesioning and other forms of surgery for
Parkinson's in our Surgery and Parkinson's
booklet
More forms of surgery for Parkinson's
Return to the surgical treatments of
Parkinson's main page
Direct and confidential help and support
- email
-
Share