Radiation-Induced Coccydynia and Pelvic Pain From Insufficiency Fracture Treated With Ganglion Impar Block.

Background: Pelvic insufficiency fractures can be a delayed effect from radiation therapy. As a result, significant pain, debility, and reduction in quality of life can occur. We describes the utility of ganglion impar blockade in the treatment of coccydynia and pelvic pain related to insufficiency fracture.

Case report: The patient is a 71-year-old woman with stage 2 grade II endometrial cancer that presented with pelvic and tailbone pain approximately 4 years after completing radiation therapy and was found to have a sacral insufficiency fracture. She underwent ganglion impar blockade on 2 occasions with marked improvement in her pain and functionality after each injection.

Conclusions: Fluoroscopic-guided ganglion impar block may be a safe and useful intervention to reduce pain in cancer patients with pelvic and/or tailbone pain related to insufficiency fracture.