The use of steroid preparations by the external route was first employed in 1953 by Lievre. Since then a number of similar series have been published which confirm the value of the method. The present study was carried out in Wonju Christian hospital over a 4 year period. Of a total of 141 patients complaining of back pain and sciatica were treated by epidural in-jection .of methyl-prednisolone acetate(Depo-Medrol). The results were encouraging and this treatment seems to be a valuable adjunct to the management of lumbosciatic syndrome.