Lateral Supraorbital Approach

The lateral supraorbital (LSO) approach is the most common craniotomy used in Helsinki by Professor Juha Hernesniemi. He has used the LSO approach for more than 30 years and in more than 6000 surgeries. This approach is a simpler, faster, and less invasive modification of the classically established pterional approach described by Yasargil. It provides excellent exposure of anterior fossa lesions, suprasellar lesions, and most anterior circulation aneurysms.