[Sciatic nerve compression as a complication of the sitting position].
There are several complications and disadvantages related to sitting position. Among the most frequent are air embolism, pneumocefalus, quadriplegia presumably due to flexion myelopathy, the risk of haematomas at the operative site and the fatigue of the surgeon. Despite the advent of technical innovations the choice of patient position is still done depending on the surgeon preference or experience. We report an unusual complication of sciatic neuropathy due to the pyriformis syndrome after an operation performed in a 29 year old patient who underwent removal of an acoustic neurinoma in sitting position.