The efficacy of transforaminal epidural steroid injection by the conventional technique in far-lateral herniation of lumbar disc.

Background: Owing to the anatomical difference between the far lateral herniation of the lumbar disc (FHLD) and the intraspinal herniation of lumbar disc (iHLD), the outcome of transforaminal epidural steroid injections (TFESI) in patients with FHLD seems to be different from that in patients with iHLD. However, few studies have evaluated the efficacy of TFESI in FHLD.

Objective: To evaluate and compare the efficacy of TFESI in FHLD and iHLD patients.