These spiked rods are uric acid crystals photographed under polarized light. Increased uric acid blood levels and formation of uric acid crystals in the joints are associated with gout.
Review Date: 4/29/2013 Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, Bethanne Black, Stephanie Slon, and Nissi Wang.