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Gamma Knife Surgery in Trigeminal Neuralgia
Amparo Wolf1, Douglas Kondziolka2
1Department of Neurosurgery, NYU Langone Medical Center, 530 First Avenue, Suite 8R, New York, NY 10016, USA.
Neurosurgery Clinics of North America
|June 22, 2016
Summary
Gamma knife surgery (GKS) offers a safe and effective noninvasive treatment for trigeminal neuralgia (TN). Most patients experience significant pain relief within a year, with similar success rates for repeat GKS procedures.
Area of Science:
- Neurosurgery
- Neurology
- Pain Management
Background:
- Trigeminal neuralgia (TN) is a debilitating neuropathic facial pain condition.
- Gamma Knife surgery (GKS) is a noninvasive stereotactic radiosurgery option for TN.
- Recurrent TN may require repeat treatment interventions.
Purpose of the Study:
- To evaluate the safety, efficacy, and durability of Gamma Knife surgery for trigeminal neuralgia.
- To assess outcomes for both initial and repeat GKS procedures in TN patients.
- To identify predictors of long-term pain relief following GKS for TN.
Main Methods:
- Retrospective analysis of patients undergoing GKS for trigeminal neuralgia.
- Assessment of pain relief using the Barrow Neurological Institute (BNI) pain scale.
- Evaluation of outcomes for initial and second GKS procedures.
Main Results:
- 75-90% of patients achieved significant pain relief (BNI grades I-IIIB) by one year post-GKS.
- Similar pain relief rates were observed in patients undergoing a second GKS for recurrent TN.
- Predictors of durable pain relief included type I TN, post-GKS BNI score, and facial numbness.
Conclusions:
- Gamma Knife surgery is a safe, effective, and durable treatment for trigeminal neuralgia.
- Repeat GKS procedures yield comparable pain relief rates for recurrent TN.
- Specific patient and treatment factors predict the longevity of pain relief from GKS in TN.
