Ultrasound-guided ganglion impar block: A technical report

Chia Shiang Lin, Jen Kun Cheng, Yung Wei Hsu, Chien Chuan Chen, Hsuan Chih Lao, Chun Jen Huang, Peter H. Cheng, Samer Narouze

研究成果: 雜誌貢獻文章同行評審

35 引文 斯高帕斯(Scopus)


Background and Objectives: Ganglion impar block is an uncommon procedure that has been performed traditional with fluoroscopy. One approach is the trans-sacrococcygeal approach. Sometimes this can be difficult because the sacrococcygeal joint (SCJ) cannot be readily seen on anteroposterior (AP) and lateral fluoroscopy. This technical report describes the feasibility of ultrasound in assisting ganglion impar blocks. Methods: We performed ganglion impar block using ultrasound as the primary imaging tool, with fluoroscopic confirmation in 15 patients. We used a linear array transducer (5-12 MHz) to obtain sonographic transverse and longitudinal views at the sacral cornua; we identified the first cleft below the sacral hiatus as the SCJ. Then we inserted a 23-gauge (7 cm in length) needle into the SCJ under sonographic guidance. Then we confirmed proper needle depth by lateral fluoroscopy and injection of contrast agent. Results: In all 15 procedures, we accurately located and passed the needle into the patients' SCJs under real time sonographic guidance. Conclusions: In cases where the cleft cannot be readily seen on AP and lateral fluoroscopy, we have found ultrasound to be of assistance. Ultrasound does not replace fluoroscopy, because lateral fluoroscopy is still required to establish safe depth, and correct site of injection. However, ultrasound can be helpful when fluoroscopy alone is insufficient.
頁(從 - 到)390-394
期刊Pain Medicine
出版狀態已發佈 - 1月 1 2010

ASJC Scopus subject areas

  • 神經病學(臨床)
  • 麻醉與疼痛醫學


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