Epidural steroid injections have been used for decades as part of a rehabilitation program to relieve back or neck pain and the associated radicular nerve component that often accompanies these problems. These injections are minimally invasive and offer many patients substantial relief without the need for more invasive procedures. Although effective and generally simple, they must be performed accurately and properly for maximum benefit and complication avoidance. This article discusses the various technical aspects of the procedure that must be observed by the operator to accomplish these ends.