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Ganglion Impar Block
Colin J. McCarthy, MB, BCh, BAO, MRCSI, FFR (RCSI)
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KEY FACTS

  • Terminology

    • Preprocedure

      • Procedure

        • Outcomes

          TERMINOLOGY

          • Synonyms

            • Ganglion of Walther
          • Definitions

            • Ganglion impar is solitary, midline sympathetic ganglion; note that all other sympathetic ganglia in body are paired/bilateral
            • Represents caudal termination of sympathetic chain

          PREPROCEDURE

          • Indications

            • Contraindications

              • Preprocedure Imaging

                • Getting Started

                  PROCEDURE

                  • Patient Position/Location

                    • Procedure Steps

                      • Choice of Image Guidance

                        POST PROCEDURE

                        • Expected Outcome

                          • Things To Avoid

                            OUTCOMES

                            • Complications

                              Selected References

                              1. Gonnade N et al: Ganglion impar block in patients with chronic coccydynia. Indian J Radiol Imaging. 27(3):324-8, 2017
                              2. Scott-Warren JT et al: Ganglion impar blockade: a review. Curr Pain Headache Rep. 17(1):306, 2013
                              3. Datir A et al: CT-guided injection for ganglion impar blockade: a radiological approach to the management of coccydynia. Clin Radiol. 65(1):21-5, 2010
                              Related Anatomy
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                              Related Differential Diagnoses
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                              References
                              Tables

                              Tables

                              KEY FACTS

                              • Terminology

                                • Preprocedure

                                  • Procedure

                                    • Outcomes

                                      TERMINOLOGY

                                      • Synonyms

                                        • Ganglion of Walther
                                      • Definitions

                                        • Ganglion impar is solitary, midline sympathetic ganglion; note that all other sympathetic ganglia in body are paired/bilateral
                                        • Represents caudal termination of sympathetic chain

                                      PREPROCEDURE

                                      • Indications

                                        • Contraindications

                                          • Preprocedure Imaging

                                            • Getting Started

                                              PROCEDURE

                                              • Patient Position/Location

                                                • Procedure Steps

                                                  • Choice of Image Guidance

                                                    POST PROCEDURE

                                                    • Expected Outcome

                                                      • Things To Avoid

                                                        OUTCOMES

                                                        • Complications

                                                          Selected References

                                                          1. Gonnade N et al: Ganglion impar block in patients with chronic coccydynia. Indian J Radiol Imaging. 27(3):324-8, 2017
                                                          2. Scott-Warren JT et al: Ganglion impar blockade: a review. Curr Pain Headache Rep. 17(1):306, 2013
                                                          3. Datir A et al: CT-guided injection for ganglion impar blockade: a radiological approach to the management of coccydynia. Clin Radiol. 65(1):21-5, 2010