Comparison of Impar Ganglion Block and Sacral Erector Spinae Plane Block in Patients with Coccygodynia

Block of the ganglion impar is performed by injecting a mixture of steroid and local anaesthetic in front of the sacrococcygeal joint. This procedure is performed in a sterile operating theatre under ultrasound and/or fluoroscopic (X-ray) guidance. Radiopaque agents are also used during the procedure to confirm the location.

The sacral erector spina plan block is performed with ultrasound guidance by injecting a high volume mixture of local anaesthetic and steroid into the fascia under the erector spina muscles in the sacral region.