Frazier Neuro Surgery 19.0cm 30º 75º 06 06.0240.06 06.0242.06 07 06.0240.07 06.0242.07 08 06.0240.08 06.0242.08 09 06.0240.09 06.0242.09 10 06.0240.10 06.0242.10 11 06.0240.11 06.0242.11 12 06.0240.12 06.0242.12