Spinal myoclonus is a rare and less known sequel e after central neuraxial blocks and hereby we present a case of 68 yrs old lady undergoing removal of infected femur implant under sub-arachnoid block (SAB), developing myoclonus after the procedure ended but before regression of block. It was treated successfully with an infusion of lignocaine and magnesium sulphate. The patient was called in for follow-up after one week and had no any complains thereafter.

Keywords: Spinal myoclonus, sub-arachnoid block, neuraxial block