What is the role of anesthetic injections in the workup of coccyx pain?

Updated: Jan 07, 2021
  • Author: Patrick M Foye, MD; Chief Editor: Consuelo T Lorenzo, MD  more...
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The patient's response to injection of local anesthetic agents, with or without corticosteroids, can provide helpful information regarding whether the patient's pain generator has been accurately identified. However, the injection response may not be considered truly diagnostic of whether the pain generator is a specific anatomic structure unless the injection is performed with the guidance of fluoroscopy or other imaging aids. Similarly, if large volumes of fluid are injected, extravasation from the targeted site decreases the diagnostic specificity.

Complications from focal injections seem to be uncommon if the injections are performed using a sterile technique and fluoroscopy or other image guidance to assist in accurate placement. Some patients may experience exacerbation during the first few days after the injection procedure, but this is generally only temporary and self-limited.

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