OverviewThe tailbone (coccyx) is the small bone at the lower tip of the spine. The most common cause of injury to the tailbone is a backward fall onto a hard surface, such as a slippery floor or ice.
Update Date 7/30/2010
Updated by: Linda J. Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington, School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.