Author: Erik Verzemnieks, MD

Educational Pearls:

• Single study in Japan demonstrated possible effectiveness of renal colic trigger point

• Patients had injection at the area of maximal tenderness on palpation of the flank

• Compared to a muscle relaxer, injection of local anesthetic at the trigger point had faster time to pain relief and fewer rescue therapies

References

Iguchi, M et al. Randomized trial of trigger point injection for renal colic. International Journal of Urology. 2002. 9(9): 475-479