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Clinical effectiveness of the obturator externus muscle injection in chronic pelvic pain patients

Authors
 Do Hyeong Kim ; Duck Mi Yoon ; Shin Hyung Kim ; Kyung Bong Yoon 
Citation
 Pain Practice, Vol.15(1) : 40~46, 2015 
Journal Title
 Pain Practice 
ISSN
 1530-7085 
Issue Date
2015
Abstract
BACKGROUND: Because of its anatomical location and function, the obturator externus (OE) muscle can be a source of pain; however, this muscle is understudied as a possible target for therapeutic intervention in pain practice. In this retrospective observational study, we evaluated the clinical effectiveness of the OE muscle injection with a local anesthetic in chronic pelvic pain patients with suspected OE muscle problems. METHODS: Twenty-three patients with localized tenderness on the inferolateral side of the pubic tubercle accompanied by pain in the groin, anteromedial thigh, or hip were studied. After identifying the OE with contrast dye under fluoroscopic guidance, 5 to 8 mL of 0.3% lidocaine was injected. Pain scores were assessed before and after injection; patient satisfaction was also assessed. RESULTS: Mean pain score decreased by 44.7% (6.6 ± 1.8 to 3.5 ± 0.9, P < 0.001) 2 weeks after OE muscle injection as compared with pain score before injection. In addition, 82% of patients (19 of 23 patients) reported excellent or good satisfaction during 2 weeks after injection. No patients reported complications from OE muscle injection. CONCLUSIONS: Fluoroscopy-guided injection of the OE muscle with local anesthetic reduced pain scores and led to a high level of satisfaction at short-term follow-up in patients with suspected OE muscle problem. The results of this study suggest that OE muscle injection may be a valuable therapeutic option for a select group of chronic pelvic pain patients who present with localized tenderness in the OE muscle that is accompanied by groin, anteromedial thigh, or hip pain.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/141376
DOI
10.1111/papr.12138
Appears in Collections:
1. 연구논문 > 1. College of Medicine > Dept. of Anesthesiology and Pain Medicine
Yonsei Authors
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Link
 http://onlinelibrary.wiley.com/doi/10.1111/papr.12138/abstract
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