Somatosensory blockade may prevent recognition of intraoperative sciatic stimulation.
Motor activity induced by direct stimulation of the sciatic nerve was tested in dogs.
Bupivacaine administered proximal to stimulation site did not affect motor activity.
Recognition of motor activity induced intraoperatively may mitigate neurapraxia risk.
Extradural or perineural bupivacaine will not affect recognition of motor activity.