Successful Nerve Block Therapy for Lateral Cutaneous Nerve Entrapment Syndrome (LACNES) Triggered by Exercise

Kumiko Yamada; Keiichi Shimazaki; Shinichi Inomata; Yohei Owada

doi:10.7759/cureus.36151

Successful Nerve Block Therapy for Lateral Cutaneous Nerve Entrapment Syndrome (LACNES) Triggered by Exercise

Cureus. 2023 Mar 14;15(3):e36151. doi: 10.7759/cureus.36151. eCollection 2023 Mar.

Authors

Kumiko Yamada¹, Keiichi Shimazaki¹, Shinichi Inomata², Yohei Owada³

Affiliations

¹ Department of Anesthesiology, University of Tsukuba Hospital, Tsukuba, JPN.
² Division of Clinical Medicine, Department of Anesthesiology, Faculty of Medicine, University of Tsukuba, Tsukuba, JPN.
³ Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Faculty of Medicine, University of Tsukuba, Tsukuba, JPN.

Abstract

This report presents a case of a 59-year-old man who experienced pain in the left abdomen during abdominal exercises, which gradually improved. Pain recurred in the same area one year later and gradually worsened, rendering him unable to work. The strongest tender point, with a positive Carnett's sign, was noted on the flank. Ultrasonography revealed a 5 × 10 mm mass shadow in the internal oblique muscle. Trigger point injection at the same site was remarkably effective. Lateral cutaneous nerve entrapment syndrome caused by a crush injury due to abdominal exercises was diagnosed. Nerve block therapy provided effective pain relief.

Keywords: chronic abdominal wall pain; flank pain; lateral cutaneous nerve entrapment syndrome; pulsed radiofrequency treatment; trigger-point injection.

Publication types

Case Reports