Dural puncture and subdural injection: a complication of lumbar transforaminal epidural injections.

Case Report: Two cases are presented in which the complication of dural puncture is documented in the context of a lumbar transforaminal epidural steroid injection. The hazard of dural puncture during transforaminal epidural injections, the anatomy of the dural and thecal sac, the potential for subdural injections, and relevant literature are reviewed.

Design: Report of two cases.