• J Clin Med Res · Jun 2018

    Pulsed Radiofrequency as a Minimally Invasive Treatment Option in Anterior Cutaneous Nerve Entrapment Syndrome: A Retrospective Analysis of 26 Patients.

    • Robbert C Maatman, SteegersMonique A HMAHDepartment of Anaesthesiology, Radboud University Medical Centre, Nijmegen, The Netherlands., Jan-Willem Kallewaard, ScheltingaMarc R MMRMDepartment of Surgery, Maxima Medical Center, Veldhoven, The Netherlands.SolviMax, Center of Expertise for ACNES and Center of Excellence for Abdominal Wall and Groin Pain, Department of Surgery, Maxima Medical Center, Eindhoven, The , and RoumenRudi M HRMHDepartment of Surgery, Maxima Medical Center, Veldhoven, The Netherlands.SolviMax, Center of Expertise for ACNES and Center of Excellence for Abdominal Wall and Groin Pain, Department of Surgery, Maxima Medical Center, Eindhoven, The Neth.
    • Department of Surgery, Maxima Medical Center, Veldhoven, The Netherlands.
    • J Clin Med Res. 2018 Jun 1; 10 (6): 508-515.

    BackgroundChronic abdominal pain is occasionally due to entrapped intercostal nerve endings (ACNES, abdominal cutaneous nerve entrapment syndrome). If abdominal wall infiltration using an anesthetic agent is unsuccessful, a neurectomy may be considered. Pulsed radiofrequency (PRF) is a relatively new treatment option for various chronic pain syndromes. Evidence regarding a beneficial effect of this minimally invasive technique in ACNES is lacking. The aim was to assess the effectiveness of PRF treatment in ACNES patients.MethodsA series of ACNES patients undergoing PRF treatment between January 2014 and December 2015 in two hospitals were retrospectively evaluated. Pain was recorded prior to treatment and after 6 weeks using a numerical rating scale (NRS, 0 (no pain) to 10 (worst possible pain)). Successful treatment was defined as > 50% NRS pain reduction. Patient satisfaction was scored by patient global impression of change (PGIC, 1 = very much worse, to 7 = very much improved).ResultsTwenty-six patients were studied (17 women, median age 47 years, range 18 - 67 years). After 6 weeks, mean NRS score had dropped from 6.7 ± 1.2 to 3.8 ± 2.3 (P < 0.001). A mean 4.9 ± 1.4 PGIC score was reported by then. Short term treatment success (6 - 8 weeks) was 50% (n = 13, 95% CI: 29 - 71), while 8% was pain-free on the longer term (median 15 months). Median effect duration was 4 months (range 2 - 26).ConclusionsPRF is temporarily effective in half of patients with ACNES. PRF is safe and may be favored in neuropathic pain syndromes as nerve tissue destruction is possibly limited. A randomized controlled trial determining the potential additional role of PRF in the treatment strategy for ACNES is underway.

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