<prompt> When do you operate for prolapsed disc -Busy executive needs quick surgeryOnly with weakness no painSevere pain interfering with activity and not relieved by rest and treatment of 8 weeksPatient of P1D with difficulty in ambulation  <response>: Ans. is c i.e., Severe pain interfering with activity and not relieved by rest and treatment of 8 weekso Indications for surgery in cases of Prolapsed intervertebral disc areFailure of conservative treatment even after 8 weeks of treatment.Progressive neurological deficit.Cauda - equina syndrome.Severe sciatic tilt. 