Functional

Question 1

Which intervention for trigeminal neuralgia has the highest incidence of facial numbness?

Answer 1

percutaneous rhizotomy via radiofrequency thermocoagulation

Question 2

What are potential severe complications of percutaneous rhizotomy?

Answer 2

anesthesia dolorosa, neuroparalytic keratitis

Question 3

What is the success rate of percutaneous rhizotomy? Recurrence rates?

Answer 3

90-95%

20% in 6 years, 80% in 12 years

Question 4

What is the success rate of microvascular decompression in TGN? Recurrence rate?

Answer 4

85-95%

20% in 6 years, 30% in 10 years

Question 5

What is the success rate of SRS in TGN? Recurrence rate?

Answer 5

80-95% after median latency of 3 months

25% at 3 years

Question 6

What is the risk of hearing loss in MVDs for hemifacial spasm?

Answer 6

10%

Question 7

What is the success rate of MVD in hemifacial spasm? Recurrence rate?

Answer 7

> 80%

10% in 2 years

Question 8

What are the two main targets for DBS in parkinson’s disease? How do they differ in outcomes?

Answer 8

GPi: 40% improvement in motor, 65% improvement in dyskinesias

STN: 10% better in both over GPi

Question 9

What is the target in DBS for essential tremor?

Answer 9

Vim (also for thalamotomy)

Question 10

What is the target in DBS for dystonia?

Answer 10

GPi (also for Pallidotomy)

Question 11

How can disconnection syndrome be reduced in corpus callosotomy?

Answer 11

divide only the anterior 2/3 of the corpus callosum

Question 12

Sympathectomy can be used in treatment of what pain disorder?

Answer 12

complex regional pain syndrome