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Functional neurosurgery with the Leksell Gamma knife
1Northwest Hospital Gamma Knife Center, Seattle, Wash., USA.
Stereotactic and Functional Neurosurgery
|January 1, 1996
Summary
Gamma Knife radiosurgery effectively treated functional disorders like pain and tremor, showing results comparable to traditional surgery. While generally safe, some delayed complications and one death occurred after thalamotomy.
Area of Science:
- Neurosurgery
- Neurology
- Radiosurgery
Background:
- Functional disorders, including intractable pain and movement disorders, present significant therapeutic challenges.
- Gamma Knife radiosurgery offers a minimally invasive approach for neurological conditions.
Purpose of the Study:
- To evaluate the efficacy and safety of Gamma Knife radiosurgery for treating various functional neurological disorders.
- To assess outcomes for patients with intractable pain, facial pain (including trigeminal neuralgia), Parkinson's disease, and essential tremor.
Main Methods:
- Sixty patients underwent 64 Gamma Knife procedures between July 1992 and February 1995.
- Targeted radiosurgical lesions were created in the intralaminar thalamus for pain, and in the pallidum or thalamus for movement disorders.
- Procedures included unilateral/bilateral thalamotomy for pain and pallidotomy/thalamotomy for Parkinson's disease and tremor.
Main Results:
- Similar rates of improvement or resolution were observed compared to conventional surgical therapies.
- No immediate complications were reported.
- Four patients experienced delayed transient complications after thalamotomy; one fatality occurred following bilateral thalamotomy.
Conclusions:
- Gamma Knife radiosurgery is a viable treatment option for functional neurological disorders, yielding comparable outcomes to established surgical methods.
- While generally safe, potential for delayed complications, particularly after bilateral thalamotomy, necessitates careful patient selection and monitoring.