A sprain is caused by the twisting or bending of a joint into a position it was not designed to move. The ankle is the most commonly sprained joint. Some common symptoms of a sprain are pain around the joint, swelling, and bruising.
Update Date 1/17/2013
Updated by: C. Benjamin Ma, MD, Assistant Professor, Chief, Sports Medicine and Shoulder Service, UCSF Department of Orthopaedic Surgery. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, David R. Eltz, Stephanie Slon, and Nissi Wang.