RESUMO
BACKGROUND: Inguinal hernia repairs are commonly performed and although not seen in a majority of patients, chronic inguinal pain can be a debilitating state resulting after inguinal hernia repairs. Treatment options exist, including pharmacological and surgical management, but with associated risks and side effects. METHODS: In this case series report, five patients with chronic inguinal pain were selected. After initial positive response to T12, L1 and L2 nerve root blocks, pulse radiofrequency (PRF) was performed. RESULTS: All patients reported 75% to 100% pain relief lasting from six to nine months. DISCUSSION: Several hypotheses have been proposed, including selective delta and c-nerve fiber destruction, upregulation of intermediate early gene expression (IEG) and increase in c-fos protein that modulated pain transmission. CONCLUSION: The mechanism of action of pulsed radiofrequency remains unclear. This case study demonstrates the effectiveness of minimally invasive neurodestruction of T12, L1 and L2 nerve roots utilizing Pulse Radiofrequency fields.
